CN105278036A - Optical module - Google Patents
Optical module Download PDFInfo
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- CN105278036A CN105278036A CN201510782619.7A CN201510782619A CN105278036A CN 105278036 A CN105278036 A CN 105278036A CN 201510782619 A CN201510782619 A CN 201510782619A CN 105278036 A CN105278036 A CN 105278036A
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- optical
- lens
- light
- optical filter
- optical axis
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/122—Basic optical elements, e.g. light-guiding paths
- G02B6/124—Geodesic lenses or integrated gratings
- G02B6/1245—Geodesic lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/264—Optical coupling means with optical elements between opposed fibre ends which perform a function other than beam splitting
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention provides an optical module. The optical module comprises a first emission assembly and an adapter assembly which are arranged on a horizontal optical axis, and a second emission assembly which is arranged between the first emission assembly and the adapter assembly on a first perpendicular optical axis, a first optical filter which is arranged at the intersection part of the horizontal optical axis and the first perpendicular optical axis, a first lens which is arranged between the first optical filter and the adapter assembly and is arranged on the horizontal optical axis, a second lens which is arranged between the second emission assembly and the horizontal optical axis and is arranged on the first perpendicular optical axis, and a third lens which is arranged between the first emission assembly and the first optical filter and is arranged on the horizontal optical axis. Through the scheme of the optical module, integration of optical assemblies not only can be realized, but also the coupling efficiency can be guaranteed and the performance index of the optical module can be optimized.
Description
Technical field
The present invention relates to optical communication field, particularly relate to a kind of optical module.
Background technology
Along with the large-scale application of Access Network, user is more and more higher for the demand of express network speed, and equipment vendors are more and more stricter for the cost control of optical line terminal (opticallineterminal is called for short OLT) equipment but then.Therefore, how equalising network speed and cost, has great realistic meaning.
Current solution is integrated in by the OLT of different rates specification in an optical module, such as, passive light connecting system (Gigabit-CapablePON is called for short GPON) OLT and high speed passive light connecting system (being called for short XGPON) OLT is carried out integrated.
And in such scheme, because integrated optical module is more, light loss certainly will be caused to increase, therefore, coupling efficiency is one of key element that must consider.Especially for the emitting module that some light extraction efficiency is natively lower, this will cause integrated after the coupling efficiency of emitting module reduce further, cannot reliably realize the integrated of optical assembly.
Summary of the invention
The invention provides a kind of optical module, on the basis effectively ensureing coupling efficiency, reliably realize the integrated of optical assembly.
The invention provides a kind of optical module, comprising: be arranged at the first emitting module on horizontal optical axis and adapter assembly, between the first emitting module and adapter assembly, be provided with the second emitting module be positioned on the first vertical optical axis;
The intersection of horizontal optical axis and the first vertical optical axis is provided with the first optical filter; The first lens be positioned on horizontal optical axis are provided with between first optical filter and adapter assembly; The second lens be positioned on the first vertical optical axis are provided with between second emitting module and horizontal optical axis; The 3rd lens be positioned on horizontal optical axis are provided with between first emitting module and the first optical filter;
The first light that first emitting module is launched is converted to the first collimated light through the 3rd lens, and the first collimated light is through the first filter transmission to the first lens; The second light that second lens are used for the second emitting module is launched is converted into the second collimated light; Second collimated light reflexes to the first lens through the first optical filter; First lens are used for converging the collimated light received and exporting to adapter assembly.
In optical module provided by the invention, the light that each emitting module being arranged on optical module one end is launched is converted to collimated light through lens, this collimated light is through filter transmission or reflex to the lens being positioned at the optical module other end, and export to adapter assembly through lens convergence, coupled into optical fibres, the light that transmission or reflection occur in this programme on optical filter is collimated light, and compared to converged light, the light loss of collimated light in transmission or reflection is less, therefore by this programme can realize optical assembly integrated while, effective raising coupling efficiency, optimize the performance index of optical module.
Accompanying drawing explanation
The structural representation of a kind of optical module that Fig. 1 provides for the embodiment of the present invention one;
The structural representation of a kind of optical module that Fig. 2 A provides for the embodiment of the present invention two;
The structural representation of the another kind of optical module that Fig. 2 B provides for the embodiment of the present invention two;
The structural representation of a kind of optical module that Fig. 3 A provides for the embodiment of the present invention three;
The structural representation of the another kind of optical module that Fig. 3 B provides for the embodiment of the present invention three;
The structural representation of another optical module that Fig. 3 C provides for the embodiment of the present invention three;
The structural representation of a kind of optical module that Fig. 4 A provides for the embodiment of the present invention four;
The structural representation of the another kind of optical module that Fig. 4 B provides for the embodiment of the present invention four;
The schematic flow sheet of a kind of method for packing that Fig. 5 provides for the embodiment of the present invention five;
The schematic flow sheet of a kind of method for packing that Fig. 6 A provides for the embodiment of the present invention six;
The schematic flow sheet of the another kind of method for packing that Fig. 6 B provides for the embodiment of the present invention six;
The schematic flow sheet of a kind of method for packing that Fig. 7 A provides for the embodiment of the present invention seven;
The schematic flow sheet of the another kind of method for packing that Fig. 7 B provides for the embodiment of the present invention seven;
The schematic flow sheet of another method for packing that Fig. 7 C provides for the embodiment of the present invention seven;
The schematic flow sheet of a kind of method for packing that Fig. 8 provides for the embodiment of the present invention eight;
Fig. 9 is the main body schematic diagram of the optical module after having encapsulated.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
The structural representation of a kind of optical module that Fig. 1 provides for the embodiment of the present invention one, as shown in Figure 1, this optical module comprises:
Be arranged at the first emitting module 11 on horizontal optical axis X and between adapter assembly 12, first emitting module 11 and adapter assembly 12, be provided with the second emitting module 13 be positioned on the first vertical optical axis Y1;
The intersection of horizontal optical axis X and the first vertical optical axis Y1 is provided with the first optical filter 141; The first lens 151 be positioned on horizontal optical axis X are provided with between first optical filter 141 and adapter assembly 12; The second lens 152 be positioned on the first vertical optical axis Y1 are provided with between second emitting module 13 and horizontal optical axis X; The 3rd lens 153 be positioned on horizontal optical axis X are provided with between first emitting module 11 and the first optical filter 141;
The first light that first emitting module 11 is launched is converted to the first collimated light through the 3rd lens 153, and the first collimated light is transmitted through the first lens 151 through the first optical filter 141; Second lens 152 are converted into the second collimated light for the second light launched by the second emitting module 13; Second collimated light reflexes to the first lens 151 through the first optical filter 141; First lens 151 are for converging the collimated light received and exporting to adapter assembly 12.
Wherein, the arranging angle and can determine according to actual conditions of the first optical filter, such as, can be 42 ° ~ 45 °, preferably 45 °, the present embodiment be limited.
Concrete, the first emitting module 11 is in one end of horizontal optical axis X, and adapter assembly 12 is arranged at the other end of horizontal optical axis X.The reception end face of adapter assembly 12 receives the light from optical module side, the other end connecting fiber of adapter assembly 12, and the light that reception end face receives is coupled in optical fiber.
The light that first emitting module 11 and the second emitting module 13 are launched is converted into collimated light through the 3rd lens 153 and the second lens 152 respectively, this collimated light is through the first optical filter 141 transmission or reflex to the first lens 151, and converges through the first lens 151 and export to adapter assembly 12.
In practical application, the optical module such as optical filter and lens can be fixedly mounted in body, and emitting module can be connected with body by connection pipe body.
Further, the first emitting module 11 specifically may be used for the light that emission wavelength is 1490nm, such as, and GPON emitting module; Second emitting module 13 is the collimated light of 1577nm for emission wavelength, such as, and XGPON emitting module.
In practical application, the transmission curve of optical filter is single side type, and namely for different wave length, its transmissivity is different with reflectivity.Specifically, be the light of 1577nm for wavelength, the transmissivity of the first optical filter is very low; Be the light of 1490nm for wavelength, the transmissivity of the first optical filter is very high.Therefore, wavelength is that the light of 1490nm needs to be transmitted by the transmission of light, and wavelength is that the light of 1577nm then needs to be transmitted by the reflection of light, that is, each emitting module and optical element, such as the relative position relation of the first optical filter is restricted, and can not arbitrarily change and replace.
In addition, in practical application, from technological angle, adopt collimated light can increase the difficulty of coupling technique, therefore optical module adopts converged light to carry out light path coupling and transmission usually, the optical elements accept such as namely emitting module sends converged light, optical filter to light be converged light.But because the light extraction efficiency of some emitting module itself is just lower, and light loss when transmission or reflection occur converged light on optical filter is comparatively large, and this will reduce the coupling efficiency of emitting module further, what cannot realize with other assembly is integrated.
To this, adopt in the present embodiment and the current antipodal scheme of technology, the omnidistance collimated light that adopts carries out light path coupling and transmission, concrete, the light that in this programme, emitting module sends is all directly collimated light, therefore, all optical elements accept for optical transport such as optical filter to light be collimated light, pass through the program, can effectively reduce in collimated light transmitting procedure, optical filter occurs light loss when transmission or reflection, ensures coupling efficiency, realization is reliably integrated with other assembly.
In optical module provided by the invention, the light that each emitting module being arranged on optical module one end is launched is converted to collimated light through lens, this collimated light is through filter transmission or reflex to the lens being positioned at the optical module other end, and export to adapter assembly through lens convergence, coupled into optical fibres, the light that transmission or reflection occur in this programme on optical filter is collimated light, and compared to the converged light that emitting module sends usually, the light loss of collimated light in transmission or reflection is less, therefore by this programme can realize optical assembly integrated while, effective raising coupling efficiency, optimize the performance index of optical module.
Further, packaged type for lens and emitting module that the light of emitting module is converted into collimated light can be arranged according to actual needs, such as, lens and emitting module independently can be encapsulated setting, namely lens are set in the light emission side of the emitting module of individual packages, or also can by lens and emitting module integration packaging.
For example, first emitting module 11 and the 3rd lens 153 independently can encapsulate setting, second emitting module 13 and the second lens 152 can integratedly be arranged, accordingly, as shown in Figure 2 A, the structural representation of a kind of optical module that Fig. 2 A provides for the embodiment of the present invention two, on the basis of embodiment one, first emitting module 11 and the 3rd lens 153 independently encapsulate setting, the second emitting module 13 and the integrated setting of the second lens 152.
Wherein, the inside of the first emitting module 11 is integrated with luminescence chip and is positioned at the lens on luminescence chip light direction, the light that these lens are used for being sent by luminescence chip transfers converged light to and exports, and the light that the first emitting module 11 exports is converted to the first collimated light through the 3rd lens 153.
Concrete, arrange lens by the light emission side at emitting module, the light sent by emitting module is all converted to collimated light, thus reduces the light loss produced in the coupling process of light, improves the coupling efficiency of light.Further, by lens and emitting module integration packaging, the optical module in optical module can be reduced, while simplifying structure, can also effectively reducing in light module package process, in order to reach the time needed for optimum coupling effect adjustment optical module, improving packaging efficiency.
Further, in order to avoid backlight is on the impact of emitting module, as shown in Figure 2 B, the structural representation of the another kind of optical module that Fig. 2 B provides for the embodiment of the present invention two, on the basis of Fig. 2 A illustrated embodiment,
The first optoisolator 113 be positioned on horizontal optical axis X is provided with between first emitting module 11 and the 3rd lens 153.
The optical module that the present embodiment provides, arranges lens by the light emission side at emitting module, and the light sent by emitting module is converted to collimated light, thus reduces the light loss produced in the coupling process of light, improves coupling efficiency, optimizes the performance index of optical module.
Further, optical module, except possessing except emission function, can also possess receiving function simultaneously, namely realizes the transmitting-receiving of light.Accordingly, as shown in Figure 3A, the structural representation of a kind of optical module that Fig. 3 A provides for the embodiment of the present invention three, on the basis of aforementioned arbitrary embodiment, optical module also comprises:
The second receiving unit 17 being positioned at the first receiving unit 16 on the second vertical optical axis Y2 and being positioned on the 3rd vertical optical axis Y3 set gradually between the first vertical optical axis Y1 to the first lens 151;
The light of the first lens 151 also for being sent by adapter assembly 12 is converted into collimated light and exports; The collimated light that first receiving unit 16 and the second receiving unit 17 export for receiving the first lens 151.
Concrete, adapter assembly 12 can also receive the converging light from optical fiber side, and output it to the first lens 151, further, the light being received from adapter assembly side is converted into collimated light and exports to receiving unit side by the first lens 151, and the collimated light that the first lens 151 export can be sent to corresponding receiving unit by coupling process.
The optical module that the present embodiment provides, receives the light that optical fiber exports by arranging receiving unit, thus realizing photoemissive while, can also carry out light-receiving, optimizes the performance index of optical module.
In practical application, the coupling optical path that receiving unit receives collimated light can have multiple, for example, as shown in Figure 3 B, the structural representation of the another kind of optical module that Fig. 3 B provides for the embodiment of the present invention three, on the basis of Fig. 3 A illustrated embodiment,
The intersection of horizontal optical axis X and the second vertical optical axis Y2 is provided with the second optical filter 142; The 3rd optical filter 143 be positioned on horizontal optical axis X is provided with between second vertical optical axis Y2 and the first collimation lens 15;
First collimated light is transmitted through the first lens 151 through the first optical filter 141, second optical filter 142 and the 3rd optical filter 143 successively; First optical filter 141 is transmitted through the first lens 151 through the second optical filter 142 and the 3rd optical filter 143 successively for the second collimated light being reflexed to the second optical filter 142, second collimated light;
Second optical filter 142 reflexes to the first receiving unit 16 for the collimated light exported by the first lens 151; 3rd optical filter 143 reflexes to the second receiving unit 17 for the collimated light exported by the first lens 151.
Wherein, angle is set based on each optical filter, the light after being coupled can be made to arrive receiving unit, received assembly receives, such as, and angle is set can be 45 ° of the second optical filter 142, the angle that arranges of the 3rd optical filter 143 can be 1 ° ~ 45 °, and the present embodiment is not limited.
Concrete, the collimated light that first lens 151 export reflexes to the first receiving unit 16 through the second optical filter 142 and receives, the collimated light that first lens 151 export also reflexes to the second receiving unit 17 through the 3rd optical filter 142 and receives, by above-mentioned coupling optical path, realize the light-receiving of receiving unit.
Further, it is the light of 1310nm that the first receiving unit 16 specifically may be used for receiving wavelength, such as, and GPON receiving unit; It is the collimated light of 1270nm that second emitting module 17 specifically may be used for receiving wavelength, such as, and XGPON receiving unit.
In practical application, the transmission curve of the second optical filter and the 3rd optical filter is similarly single side type.Be the light of 1310nm for wavelength, the transmissivity of the second optical filter is very low, and the transmissivity of the 3rd optical filter is very high; Be the light of 1270nm for wavelength, the transmissivity of the second optical filter and the 3rd optical filter is all very low.Therefore, in order to the light realizing being respectively wavelength 1310nm and 1270nm carries out light splitting, need first to utilize the 3rd optical filter that the light that wavelength is 1270nm is reflexed to the second receiving unit, follow-up, the light of to be wavelength be substantially the 1310nm of the light after the 3rd filter transmission, further, recycling the second optical filter is that the light of 1310nm reflexes to the first receiving unit by wavelength.Visible, the relative position relation of each receiving unit and optical element is restricted equally, can not arbitrarily change and replace.
Present embodiment, by arranging optical filter between adapter assembly and receiving unit, forms corresponding coupling optical path, easily and effectively realizes the reception of light.
In practical application, collimated light is adopted to be spaced apart 20nm by the minimum wavelength of 45 ° of optical filter light splitting, wavelength is respectively to the light of 1270nm and 1310nm, because the wavelength interval of these two kinds of light is less, therefore utilize the effective light splitting of the more difficult realization of wide-angle optical filter, to this, as shown in Figure 3 C, the structural representation of another optical module that Fig. 3 C provides for the embodiment of the present invention three, on the basis of Fig. 3 B illustrated embodiment
Be provided with between second receiving unit 17 and horizontal optical axis X and be positioned at the 4th optical filter the 144, three optical filter 143 on the 3rd vertical optical axis Y3 between the second optical filter 142 and the 3rd vertical optical axis Y3;
3rd optical filter 143 reflexes to the 4th optical filter the 144, four optical filter 144 for the light received is reflexed to the second receiving unit 17 for the collimated light exported by the first lens 151.
Wherein, the 4th optical filter 144 is all band reflector plate.Concrete, first the collimated light that the first lens 151 export reflexes to the 4th optical filter 144 through the 3rd optical filter 143, then reflexes to the second receiving unit 17 through the 4th optical filter 144 and receive, and by above-mentioned coupling optical path, realizes the light-receiving of the second receiving unit.
Further, the coupling optical path of multiple reflections is adopted to realize light-receiving in present embodiment, what can effectively reduce optical filter arranges angle, namely low-angle optical filter is adopted, low-angle optical filter can distinguish the light that wavelength interval is 10nm, realize spectrophotometric result more accurately, effectively ensure the light splitting ability to 1270nm and 1310nm two kinds of light.
Concrete, the angle that arranges of the 3rd optical filter 143 can be 8 ° ~ 20 °, accordingly, the angle that arranges of the 4th optical filter is determined according to the angle that arranges of the 3rd optical filter, change with the change arranging angle of the 3rd optical filter, to make the light vertical incidence after the 4th optical filter reflection enter the second receiving unit, the present embodiment is not limited at this.
Present embodiment carries out multiple reflections by arranging low-angle optical filter, realizes the reception of light, and light that can be effectively less to wavelength interval carries out light splitting, optimizes the performance index of optical module further.
Further, in order to avoid backlight is on the impact of the second emitting module, as shown in Figure 4 A, the structural representation of a kind of optical module that Fig. 4 A provides for the embodiment of the present invention four, on the basis of aforementioned arbitrary embodiment,
The second optoisolator 18 be positioned on the first vertical optical axis Y1 is provided with between second lens 152 and the first optical filter 141.
Present embodiment effectively blocks backlight by arranging optoisolator, avoids backlight to impact the second emitting module, optimizes the performance index of optical module further.
It should be noted that, each emitting module in previous embodiment and the relative position of receiving unit can change according to design, emitting module and receiving unit can be arranged after horizontal optical axis X rotates, also mobile setting position can be carried out along horizontal optical axis X chosen position, can also arrange by chosen position in the plane at vertical optical axis place, accordingly, the position of optical filter and angle also respective change, only a kind of concrete embodiment shown in figure, and be not limited, but, it should be noted that, opposed configuration between each assembly and optical filter and position can not arbitrarily be changed and replace.Such as, optionally, as shown in Figure 4 B, the structural representation of the another kind of optical module that Fig. 4 B provides for the embodiment of the present invention four, the second receiving unit 17 also can be arranged on the top of horizontal optical axis.
In practical application, in order to prepare foregoing optical module, the schematic flow sheet of a kind of method for packing that Fig. 5 provides for the embodiment of the present invention five, for the preparation of the optical module shown in embodiment one, as shown in Figure 5, the method comprises:
501, the first optical filter, the first lens and the 3rd lens are fixedly mounted in body, form assembly;
502, assembly is fixed, and beam quality analysis instrument or CCD are set in the reception end of adapter assembly, to monitor the optical quality receiving end;
503, be coupled by the position of adjustment second emitting module, reach the parameter value the highest with fiber numerical aperture matching degree with the optical quality making beam quality analysis instrument or CCD monitor, utilize the first connection pipe body that the second emitting module is mounted to assembly;
504, the position by adjusting adapter assembly is coupled, and to make the coupling efficiency of adapter assembly and the second emitting module the highest, utilizes the second connection pipe body that adapter assembly is mounted to assembly;
505, be coupled by the position of adjustment first emitting module, to make the coupling efficiency of the first emitting module and adapter assembly the highest, utilize the 3rd connection pipe body that the first emitting module is mounted to assembly.
Concrete, the first optical filter, the first lens, the second lens and the 3rd lens can fix on body inner chamber by being adhesively fixed.Utilize connection pipe body, emitting module and assembly spot welding can be fixed.
In reality, due to process deviations such as chip of laser pasters, less deflection angle may be there is in the second collimated light, and consider build-up tolerance and the machining tolerance of the first optical filter, also there is certain angular range in its inclined-plane, now due to various tolerance stack-ups, make actual light deviation comparatively conference cause coupling efficiency to decline, in step 503, by adjusting the position of the second emitting module and the second lens, such as along horizon light axle offset certain distance, just by the off-centring to the first of transmitted beam lens center, good compensating action can be played.
Method for packing provided by the invention, the light that in the optical module that preparation is formed, each emitting module is launched is converted to collimated light through lens, this collimated light is through filter transmission or reflex to the lens being positioned at the optical module other end, and export to adapter assembly through lens convergence, coupled into optical fibres, the light that transmission or reflection occur in this programme on optical filter is collimated light, and compared to converged light, the light loss of collimated light in transmission or reflection is less, therefore by this programme can realize optical assembly integrated while, effective raising coupling efficiency, optimize the performance index of optical module.
Concrete, second emitting module and the second lens can integration packagings, accordingly, as shown in Figure 6A, the schematic flow sheet of a kind of method for packing that Fig. 6 A provides for the embodiment of the present invention six, for the preparation of the optical module of embodiment as shown in Figure 2 A, on the basis of embodiment five, be coupled by the position of adjustment second emitting module in 503, comprise:
601, be coupled by adjustment the second emitting module of integration packaging and the position of the second lens.
In present embodiment, the first emitting module and the 3rd lens are independently arranged, the second emitting module and the integrated setting of the second lens.
Concrete, by emitting module and lens integration packaging, the optical module in optical module can be reduced, while simplifying structure, can also effectively reducing in light module package process, in order to reach the time needed for optimum coupling effect adjustment optical module, improving packaging efficiency.
Further, in order to avoid backlight is on the impact of the first emitting module, as shown in Figure 6B, the schematic flow sheet of the another kind of method for packing that Fig. 6 B provides for the embodiment of the present invention six, for the preparation of the optical module of embodiment as shown in Figure 2 B, on the basis of Fig. 6 A illustrated embodiment, when execution 501, also comprise:
602, the first optoisolator is fixedly mounted in body.
The method for packing that the present embodiment provides, scioptics, the light sent by emitting module is converted into collimated light, thus reduces the light loss produced in the coupling process of light, improves coupling efficiency, optimizes the performance index of optical module.
Further, optical module is except possessing except emission function, receiving function can also be possessed simultaneously, as shown in Figure 7 A, the schematic flow sheet of a kind of method for packing that Fig. 7 A provides for the embodiment of the present invention seven, for the preparation of the optical module of embodiment as shown in Figure 3A, on the basis of aforementioned arbitrary embodiment, method also comprises:
701, the position of the first receiving unit and the second receiving unit is adjusted to be coupled;
702, the first receiving unit after coupling and the second receiving unit are mounted to assembly.
Concrete, by gluing and hot setting, receiving unit and assembly can be fixed.
The optical module that the present embodiment provides, receives the light that optical fiber exports by arranging receiving unit, thus realizing photoemissive while, can also carry out light-receiving, optimizes the performance index of optical module.
In practical application, the coupling optical path that receiving unit receives collimated light can have multiple, for example, as shown in Figure 7 B, the schematic flow sheet of the another kind of method for packing that Fig. 7 B provides for the embodiment of the present invention seven, for the preparation of the optical module of embodiment as shown in Figure 3 B, on the basis of Fig. 7 A illustrated embodiment, when execution 501, also comprise:
703, the second optical filter and the 3rd optical filter are fixedly mounted in body.
Wherein, the arranging angle and can determine according to actual conditions of each optical filter, the present embodiment is not limited.
Concrete, the collimated light that first collimation lens exports reflexes to the first receiving unit through the second optical filter and receives, the collimated light that first collimation lens exports also reflexes to the second receiving unit through the 3rd optical filter and receives, and by above-mentioned coupling optical path, realizes the light-receiving of receiving unit.
Present embodiment, by arranging optical filter between adapter assembly and receiving unit, forms corresponding coupling optical path, easily and effectively realizes the reception of light.
In practical application, utilize the effective light splitting of the more difficult realization of wide-angle optical filter, to this, as seen in figure 7 c, the schematic flow sheet of another method for packing that Fig. 7 C provides for the embodiment of the present invention seven, for the preparation of the optical module of embodiment as shown in Figure 3 C, on the basis of Fig. 7 B illustrated embodiment, when execution 501, also comprise:
704, the 4th optical filter is fixedly mounted in body.
Concrete, first the collimated light that the first lens export reflexes to the 4th optical filter through the 3rd optical filter, then reflexes to the second receiving unit reception through the 4th optical filter, by above-mentioned coupling optical path, realizes the light-receiving of the second receiving unit.
Concrete, the angle that arranges of the 3rd optical filter 143 can be 8 ° ~ 20 °, accordingly, the angle that arranges of the 4th optical filter is determined according to the angle that arranges of the 3rd optical filter, change with the change arranging angle of the 3rd optical filter, to make the light vertical incidence after the 4th optical filter reflection enter the second receiving unit, the present embodiment is not limited at this.
Present embodiment carries out multiple reflections by arranging low-angle optical filter, realizes the reception of light, and light that can be effectively less to wavelength interval carries out light splitting, optimizes the performance index of optical module further.
Further, in order to avoid backlight is on the impact of the second emitting module, as shown in Figure 8, the schematic flow sheet of a kind of method for packing that Fig. 8 provides for the embodiment of the present invention eight, for the preparation of the optical module of embodiment four, on the basis of aforementioned arbitrary embodiment, when execution 501, also comprise:
801, the second optoisolator is fixedly mounted in body.
Present embodiment effectively blocks backlight by arranging optoisolator, avoids backlight to impact the second emitting module, optimizes the performance index of optical module further.
Concrete, in aforementioned approaches method embodiment, the step performed when execution 501, can perform, also can perform after 501, or perform with 501 simultaneously before 501, and the embodiment of just a kind of citing shown in figure, is not limited.
It should be noted that, about the position relationship of each optical module and structure in said method embodiment, with reference to the corresponding contents in aforementioned optical module embodiment, can not repeat them here.Concrete, as shown in Figure 9, Fig. 9 is the main body schematic diagram of the optical module after having encapsulated to the optical module after installation.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (9)
1. an optical module, is characterized in that, comprising: be arranged at the first emitting module on horizontal optical axis and adapter assembly, is provided with the second emitting module be positioned on the first vertical optical axis between described first emitting module and described adapter assembly;
The intersection of described horizontal optical axis and described first vertical optical axis is provided with the first optical filter; The first lens be positioned on described horizontal optical axis are provided with between described first optical filter and described adapter assembly; The second lens be positioned on described first vertical optical axis are provided with between described second emitting module and described horizontal optical axis; The 3rd lens be positioned on described horizontal optical axis are provided with between described first emitting module and described first optical filter;
The first light that described first emitting module is launched is converted to the first collimated light through described 3rd lens, and described first collimated light is through described first filter transmission extremely described first lens; The second light that described second lens are used for described second emitting module is launched is converted into the second collimated light; Described second collimated light reflexes to described first lens through described first optical filter; Described first lens are used for converging the collimated light received and exporting to described adapter assembly.
2. optical module according to claim 1, it is characterized in that, described optical module also comprises: the second receiving unit being positioned at the first receiving unit on the second vertical optical axis and being positioned on the 3rd vertical optical axis set gradually between described first vertical optical axis to described first lens;
The light of described first lens also for being sent by described adapter assembly is converted into collimated light and exports; The collimated light that described first receiving unit and described second receiving unit export for receiving described first lens.
3. optical module according to claim 2, it is characterized in that, the intersection of described horizontal optical axis and described second vertical optical axis is provided with the second optical filter; The 3rd optical filter be positioned on described horizontal optical axis is provided with between described second vertical optical axis and described first lens;
Described first collimated light is successively through described first optical filter, described second optical filter and described 3rd filter transmission extremely described first lens; Described first optical filter is used for described second collimated light to reflex to described second optical filter, and described second collimated light is successively through described second optical filter and described 3rd filter transmission extremely described first lens;
The collimated light that described second optical filter is used for described first lens export reflexes to described first receiving unit; The collimated light that described 3rd optical filter is used for described first lens export reflexes to described second receiving unit.
4. optical module according to claim 3, it is characterized in that, be provided with the 4th optical filter be positioned on described 3rd vertical optical axis between described second receiving unit and described horizontal optical axis, described 3rd optical filter is between described second optical filter and described 3rd vertical optical axis;
The collimated light that described 3rd optical filter is used for described first lens export reflexes to described 4th optical filter, and described 4th optical filter is used for the light received to reflex to described second receiving unit.
5. optical module according to claim 4, is characterized in that, the angle that arranges of described 3rd optical filter is 8 ° ~ 20 °.
6. optical module according to claim 5, is characterized in that, the wavelength of the light that described first receiving unit receives is 1310nm, and the wavelength of the light that described second receiving unit receives is 1270nm.
7. optical module according to claim 1, is characterized in that, the wavelength of the light that described first emitting module is launched is 1490nm, and the wavelength of the light that described second emitting module is launched is 1577nm.
8. the optical module according to any one of claim 1-7, is characterized in that, is provided with the first optoisolator be positioned on described horizontal optical axis between described first emitting module and described 3rd lens.
9. the optical module according to any one of claim 1-7, is characterized in that, is provided with the second optoisolator be positioned on described first vertical optical axis between described second lens and described first optical filter.
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| CN201510782619.7A CN105278036A (en) | 2015-11-13 | 2015-11-13 | Optical module |
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| CN110007291A (en) * | 2019-04-16 | 2019-07-12 | 深圳市速腾聚创科技有限公司 | A kind of reception system and laser radar |
| CN110780451A (en) * | 2019-11-14 | 2020-02-11 | 成都优博创通信技术股份有限公司 | Laser assembly and optical communication equipment |
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