CN109683256A - A kind of LD tube core and a kind of TOSA module - Google Patents
A kind of LD tube core and a kind of TOSA module Download PDFInfo
- Publication number
- CN109683256A CN109683256A CN201811582964.6A CN201811582964A CN109683256A CN 109683256 A CN109683256 A CN 109683256A CN 201811582964 A CN201811582964 A CN 201811582964A CN 109683256 A CN109683256 A CN 109683256A
- Authority
- CN
- China
- Prior art keywords
- condenser lens
- chip
- reflecting mirror
- core
- tube core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4206—Optical features
-
- 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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4207—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms with optical elements reducing the sensitivity to optical feedback
-
- 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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4214—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The present invention relates to optical device fields, more particularly to a kind of LD tube core and a kind of TOSA module, LD tube core includes core, is located at the intracorporal LD chip of core, condenser lens and reflecting mirror, condenser lens is neighbouring to be set to LD chip, the optical signal of LD chip emission is transferred to reflecting mirror after condenser lens focuses, and optical signal is reflected core by reflecting mirror.Condenser lens is neighbouring to be set to LD chip, has compressed optical signal and reaches the beam cross section product of condenser lens, to reduce diaphragm loss when passing through condenser lens, improves coupling efficiency.
Description
Technical field
The present invention relates to optical device fields, and in particular to a kind of LD tube core and a kind of TOSA module.
Background technique
TOSA module (Transmitter Optical Subassembly, Chinese are known as optical transmitter module), being used for will be electric
Signal is converted into optical signal.TOSA module often passes through TO packaged type and forms, and the common optical path of TOSA module has two after TO encapsulation
Kind: the first is LD chip, lens and ceramic insertion core coaxial packaging；Second for LD chip using lens after reflecting mirror
And ceramic insertion core.
Above-mentioned TO encapsulation after TOSA module in, LD chip issue optical signal can pass through lens, but need by compared with
It over long distances could coupled into optical fibres.In the environment of high temperature or low temperature, due to the deformation difference meeting of internal components and lens mount
Object distance is caused to change, and in the process, what the deformational displacement deficiency and object distance that ceramic insertion core change in location generates generated
Variable quantity matches, thus, optical signal is unable to efficient coupling into the optical fiber in ceramic insertion core, leads to the coupling efficiency of TOSA module
It reduces, and then leads to the reduction of output power.
Simultaneously as the LD chip angle of divergence is larger, the divergent beams that LD chip issues have biggish when passing through lens focus
Diaphragm loss generally requires the effective clear aperature for increasing lens, will so bring in cost to reduce energy loss
It improves.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above drawbacks of the prior art, provide a kind of LD tube core and
A kind of TOSA module, the optical signal for solving LD chip emission lose object distance and picture under larger and high/low temperature by lens back stop
Lead to the problem that TOSA modular power is unstable under high/low temperature away from variable quantity mismatch.
To solve this technical problem, the present invention provides a kind of LD tube core, including core, further includes being located at the intracorporal LD core of core
Piece, condenser lens and reflecting mirror, the condenser lens is neighbouring to be set to LD chip, and the optical signal of the LD chip emission is through over-focusing
Reflecting mirror is transferred to after lens focus, optical signal is reflected core by the reflecting mirror.
Wherein, preferred version is: the LD chip and condenser lens are arranged on the same plane of same object.
Wherein, preferred version is: the core includes carrier and the pipe cap for being fixedly connected with carrier, the carrier and pipe cap
Between shape forming cavity, it is intracavitary that the LD chip, condenser lens and reflecting mirror are each provided at type.
Wherein, preferred version is: the pipe cap is equipped with flat window lens, and the optical signal of the reflecting mirror reflection passes through flat window
Core is transmitted out after lens.
Wherein, preferred version is: the LD tube core further includes that the intracavitary temperature control plate of type is arranged in and is mounted on temperature control plate
On substrate, the LD chip and condenser lens setting on the surface of the substrate.
Wherein, preferred version is: the reflecting mirror setting is on the surface of the substrate.
Wherein, preferred version is: the reflecting mirror is plane mirror, also, the reflecting surface and substrate of the reflecting mirror
Surface in 45 ° setting.
Wherein, preferred version is: the distance range of the LD chip and condenser lens is 0.2mm to 1mm.
The present invention also provides a kind of TOSA module, the TOSA module includes LD tube core as described above, further includes fixing
It connects the soldering and sealing tube body of LD tube core and is fixedly connected with the receptacle component of soldering and sealing tube body, the receptacle component packet
Ceramic insertion core is included, optical fiber, the optical signal coupled into optical fibres of the reflecting mirror reflection are equipped with inside the ceramic insertion core.
Wherein, preferred version is: the receptacle component further includes isolator, the optical signal of the reflecting mirror reflection
The coupled into optical fibres after isolator.
The beneficial effects of the present invention are compared with prior art, the present invention is by designing a kind of LD tube core and one kind
TOSA module, LD chip are transferred to reflecting mirror after transmitting optical signal to condenser lens again, and condenser lens is neighbouring to be set to LD chip, pressure
The optical signal that contracted reaches the beam cross section product of condenser lens, to reduce diaphragm loss when passing through condenser lens, improves
Coupling efficiency；In addition, LD chip and condenser lens are arranged on the same plane of same object, the influence to object distance is reduced,
To improve the stability of the output power of optical signal.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the schematic diagram of LD tube core of the present invention；
Fig. 2 is the path profile of optical signal transmission of the present invention.
Specific embodiment
Now in conjunction with attached drawing, elaborate to presently preferred embodiments of the present invention.
As depicted in figs. 1 and 2, the present invention provides a kind of preferred embodiment of LD tube core.
Specifically, with reference to Fig. 1, a kind of LD tube core, TO encapsulation is to draw the encapsulation of pin, and the LD tube core includes core
10, and the LD chip 1, condenser lens 2 and the reflecting mirror 3 that are located in core 10, the condenser lens 2 is neighbouring to be set to LD chip 1
Side, the reflecting mirror 3 are set to 2 side of condenser lens.With reference to Fig. 2, the optical signal that the LD chip 1 emits passes through condenser lens
It is transferred to reflecting mirror 3 after 2 focusing, optical signal is reflected core 10 by the reflecting mirror 3.The optical signal of transmission passes through reflecting mirror 3
Afterwards, axial transmission being converted to by radial transport, LD die internal device optical relative position is no longer influenced by axial deformation, and
Radial deformation is again very small, therefore, either in the environment of high temperature or low temperature, LD die internal device can be effectively reduced
Influence to object distance improves the coupling efficiency of optical signal, also just improves the stability of the output power of optical signal.
In the present embodiment, with reference to Fig. 1, the same plane of same object is arranged in the LD chip 1 and condenser lens 2
On, and the two is fixed setting.The LD chip 1 and condenser lens 2 are in the same plane of same object, can set object distance
On the same plane of same object, influence of the external environment to object distance is reduced, to stabilize the output power of optical signal.
Also, the LD chip 1 and condenser lens 2 are neighbouring settings, are closer, and the optical signal that the LD chip 1 issues being capable of diameter
To the focusing of lens 2 is just focused after transmitting shorter light path, beam cross section product of the optical signal on condenser lens 2, drop can be compressed
Low optical signal is lost by the diaphragm generated when condenser lens 2, improves the coupling efficiency of optical signal as a result, is also just improved
The output power of optical signal；And compression light beam sectional area can also reduce the requirement to 2 clear aperature of condenser lens,
Just reduce the cost of TO encapsulation.
Further, with reference to Fig. 1, the core 10 includes carrier 20 and the pipe cap 30 for being fixedly connected with carrier 20, described
Shape forming cavity 31 between carrier 20 and pipe cap 30, the LD chip 1, condenser lens 2 and reflecting mirror 3 are each provided in type chamber 31.Institute
Stating type chamber 31 is confined space, can protect LD chip 1, condenser lens 2 and reflecting mirror 3.
Still further, the pipe cap 30 is equipped with flat window lens 32 with reference to Fig. 1, the flat window lens 32 are located at reflection
The top of mirror 3, the optical signal that the reflecting mirror 3 reflects transmit out core after flat window lens 32, are optical signal from pipe
Cap 30 transmits outward.
Further, with reference to Fig. 1, the LD tube core further includes the temperature control plate 4 being arranged in type chamber 31 and is mounted on
The surface of substrate 5 is arranged in substrate 5 on temperature control plate 4, the LD chip 1 and condenser lens 2, and is fixed setting.It is described
Temperature control plate 4 can provide same temperature environment for LD chip 1 and condenser lens 2, and can realize heat sinking function.On the substrate 5
Equipped with routing PAD, routing position can be provided for LD chip 1 and condenser lens 2, and branch can be provided for LD chip 1 and condenser lens 2
Support effect.Under the action of temperature control plate 4 and substrate 5, the LD chip 1 and condenser lens 2 work under constant working temperatures environment
Make, can be improved the stability of LD chip 1 and condenser lens 2.
Preferably, the reflecting mirror 3 is also disposed at the surface of substrate 5, and is fixed setting, so that LD chip 1, focusing
Lens 2 and 3 three of reflecting mirror are in the flat general work of equality of temperature.
Wherein, the reflecting mirror 3 is plane mirror, and the reflecting mirror 3 is triangular prism shape, also, the reflecting mirror 3
Reflecting surface and substrate 5 surface in 45 ° setting, guarantee will by the direction of propagation of the optical signal of condenser lens 2 change 90 ° after
It is entirely reflected on flat window lens 32, then is transmitted to outside core from flat window lens 32.
Preferably, the distance range of the LD chip 1 and condenser lens 2 is 0.2mm to 1mm, and the distance of the two is very close,
The optical signal that the LD chip 1 is launched just is focused the focusing of lens 2 after shorter light path, and the two is flat in equality of temperature
Face can compress beam cross section product of the optical signal on the condenser lens 2, reduce optical signal by generating when condenser lens 2
Diaphragm loss, improves the coupling efficiency of optical signal as a result, also just improves the output power of optical signal；And compression light beam
Sectional area can also reduce the requirement to 2 clear aperature of condenser lens, also just reduce the cost of TO encapsulation.
As depicted in figs. 1 and 2, the present invention also provides a kind of preferred embodiments of TOSA module.
Specifically, with reference to Fig. 1 and Fig. 2, it further includes being fixedly connected with LD that the TOSA module, which includes LD tube core as described above,
The soldering and sealing tube body 40 of tube core and the receptacle component 50 for being fixedly connected with soldering and sealing tube body 40, the receptacle component 50
Including ceramic insertion core 53, the soldering and sealing tube body 40 can play transfer supporting role, be equipped with optical fiber 51, institute inside the ceramic insertion core 53
The optical signal for stating the reflection of reflecting mirror 3 is transferred to inside ceramic insertion core 53 all the way after transmitting out core 10, and coupled into optical fibres
51, realize that electric signal is converted to optical signal.
Further, with reference to Fig. 1, the receptacle component 50 further includes isolator 52, what the reflecting mirror 3 reflected
Optical signal passes through isolator 52 and then coupled into optical fibres 51.The isolator 52 can prevent the reflection of 53 end face of ceramic insertion core
Light is returned along original optical path.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
Any modification made all within the spirits and principles of the present invention, equivalent replacement, improve etc., it should be included in guarantor of the invention
It protects in range.
Claims (10)
1. a kind of LD tube core, including core, it is characterised in that: further include being located at the intracorporal LD chip of core, condenser lens and reflection
Mirror, the condenser lens is neighbouring to be set to LD chip, and the optical signal of the LD chip emission is transferred to after condenser lens focuses
Optical signal is reflected core by reflecting mirror, the reflecting mirror.
2. LD tube core according to claim 1, it is characterised in that: the LD chip and condenser lens are arranged in same object
Same plane on.
3. LD tube core according to claim 2, it is characterised in that: the core includes carrier and is fixedly connected with carrier
Pipe cap, shape forming cavity between the carrier and pipe cap, it is intracavitary that the LD chip, condenser lens and reflecting mirror are each provided at type.
4. LD tube core according to claim 3, it is characterised in that: the pipe cap is equipped with flat window lens, the reflecting mirror
The optical signal of reflection is by transmitting out core after flat window lens.
5. LD tube core according to claim 3, it is characterised in that: the LD tube core further includes that the intracavitary temperature control of type is arranged in
Plate and the substrate being mounted on temperature control plate, the LD chip and condenser lens setting are on the surface of the substrate.
6. LD tube core according to claim 5, it is characterised in that: the reflecting mirror setting is on the surface of the substrate.
7. LD tube core according to claim 5, it is characterised in that: the reflecting mirror is plane mirror, also, described anti-
The reflecting surface of mirror and the surface of substrate are penetrated in 45 ° of settings.
8. LD tube core according to any one of claims 1 to 7, it is characterised in that: the LD chip is at a distance from condenser lens
Range is 0.2mm to 1mm.
9. a kind of TOSA module, it is characterised in that: the TOSA module includes LD tube core as described in any of the claims 1 to 8,
It further include the soldering and sealing tube body for being fixedly connected with LD tube core and the receptacle component for being fixedly connected with soldering and sealing tube body, it is described
Receptacle component includes ceramic insertion core, and optical fiber, the optical signal coupling of the reflecting mirror reflection are equipped with inside the ceramic insertion core
It is fine to close entering light.
10. TOSA module according to claim 9, it is characterised in that: the receptacle component further includes isolator,
The optical signal of reflecting mirror reflection coupled into optical fibres after isolator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811582964.6A CN109683256A (en) | 2018-12-24 | 2018-12-24 | A kind of LD tube core and a kind of TOSA module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811582964.6A CN109683256A (en) | 2018-12-24 | 2018-12-24 | A kind of LD tube core and a kind of TOSA module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109683256A true CN109683256A (en) | 2019-04-26 |
Family
ID=66188891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811582964.6A Pending CN109683256A (en) | 2018-12-24 | 2018-12-24 | A kind of LD tube core and a kind of TOSA module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109683256A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11202165A (en) * | 1998-01-16 | 1999-07-30 | Canon Inc | Optical module |
| EP0815479B1 (en) * | 1995-03-23 | 1999-08-25 | Robert Bosch Gmbh | Optical transceiver |
| US6351584B1 (en) * | 1997-12-16 | 2002-02-26 | Sony Corporation | Optical transmitter-receiver and optically sending/receiving method |
| US6433942B1 (en) * | 1998-06-26 | 2002-08-13 | Sony Corporation | Optical apparatus |
| CN1758081A (en) * | 2004-10-07 | 2006-04-12 | 安捷伦科技有限公司 | Optoelectronic module with high coupling efficiency |
| JP2012163902A (en) * | 2011-02-09 | 2012-08-30 | Sumitomo Electric Ind Ltd | Optical module |
| WO2015076469A1 (en) * | 2013-11-20 | 2015-05-28 | 주식회사 포벨 | Optical module package structure for narrow wavelength spacing bidirectional communication |
| US20180003908A1 (en) * | 2016-06-30 | 2018-01-04 | OE Solutions Co., Ltd. | Optical transmitter and optical module including the same |
-
2018
- 2018-12-24 CN CN201811582964.6A patent/CN109683256A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0815479B1 (en) * | 1995-03-23 | 1999-08-25 | Robert Bosch Gmbh | Optical transceiver |
| US6351584B1 (en) * | 1997-12-16 | 2002-02-26 | Sony Corporation | Optical transmitter-receiver and optically sending/receiving method |
| JPH11202165A (en) * | 1998-01-16 | 1999-07-30 | Canon Inc | Optical module |
| US6433942B1 (en) * | 1998-06-26 | 2002-08-13 | Sony Corporation | Optical apparatus |
| CN1758081A (en) * | 2004-10-07 | 2006-04-12 | 安捷伦科技有限公司 | Optoelectronic module with high coupling efficiency |
| JP2012163902A (en) * | 2011-02-09 | 2012-08-30 | Sumitomo Electric Ind Ltd | Optical module |
| WO2015076469A1 (en) * | 2013-11-20 | 2015-05-28 | 주식회사 포벨 | Optical module package structure for narrow wavelength spacing bidirectional communication |
| US20180003908A1 (en) * | 2016-06-30 | 2018-01-04 | OE Solutions Co., Ltd. | Optical transmitter and optical module including the same |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190426 |