CN204009151U - A kind of miniature passive optical-fiber network single-fiber bidirectional optical device that adopts the encapsulation of tank type - Google Patents
A kind of miniature passive optical-fiber network single-fiber bidirectional optical device that adopts the encapsulation of tank type Download PDFInfo
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- CN204009151U CN204009151U CN201420395931.1U CN201420395931U CN204009151U CN 204009151 U CN204009151 U CN 204009151U CN 201420395931 U CN201420395931 U CN 201420395931U CN 204009151 U CN204009151 U CN 204009151U
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Abstract
The utility model is applicable to optic communication device technical field, a kind of miniature passive optical-fiber network single-fiber bidirectional optical device that adopts the encapsulation of tank type is provided, comprise TO base, flat window TO cap, optical fiber component, on described TO base, be pasted with Optical Transmit Unit assembly and light receiving unit assembly, the back side of TO base is also provided with pin, described flat window TO cap air-tight packaging is on described TO base, and described optical fiber component coupling is welded on described flat window TO cap, and described TO base, flat window TO cap form pot type encapsulation.The utility model has been realized single-fiber bidirectional device encapsulation in a TO-CAN tank type body, compare with traditional BOSA encapsulation, the utility model is mounted on Optical Transmit Unit assembly and light receiving unit assembly on TO base, and pin is positioned on same base plane, more be conducive to BOB product upper plate, realized the miniaturization of existing PON optical device integratedly, reduced again integrated cost, and be easy to integrated more function.
Description
Technical field
The utility model belongs to optic communication device technical field, relates in particular to a kind of miniature passive optical-fiber network single-fiber bidirectional optical device that adopts the encapsulation of tank type.
Background technology
Along with FTTx (Fiber-to-the-x, optical fiber access) widespread deployment of network, equipment vendor is for (the optical line terminal of the OLT in EPON, optical line terminal) and ONU (Optical NetworkUnit, optical network unit) optical module demand also expands thereupon, tradition is applied to PON (Passive OpticalNetwork, EPON) single-fiber bidirectional optical device on optical module is BOSA (Bi-directionalOptical Sub-Assembly, single fiber bi-directional) encapsulation, this encapsulating structure is by laser instrument, detector and optical fiber component welding or viscose glue are stained with on the round and square tube body of optical filter or isolator one.Along with the expansion of cost continuous and FTTx Network demand falls in equipment vendor, the requirement of miniaturization just traditional single fiber bi-directional EPON BOSA packaging has been proposed.
BOB (the BOSA on Borad) product that some device companies release, this scheme is potted directly into BOSA in device board, and this product will be walked around module company and directly dock with equipment vendor, have obvious cost advantage; Some equipment vendor's favors integrated certain special functional module on traditional PON single-fiber bidirectional device, for example: integrated OTDR (Optical Time Domain Reflectometer in original PON module, optical time domain reflectometer) the OLT optical module of function, can realize OLT to optical-fiber line fault measuring ability; And for example: (the RF over Glass of integrated RFoG on ONU optical module, optical fiber radio frequency transmission) the ONU optical module of function, can realize PON bidirectional data network and CATV (Community Antenna Television, community's communal TV aerial) bidirectional analog Web-compatible, realize user to the program request of CATV signal video frequency etc. function.In addition, some optical device/module companies also bring into schedule to the research and development of miniaturization, highly integrated device scheme, as the plugged PON optical module of 2,4 or a plurality of single-fiber bidirectional optical devices on integrated in an OLT optical module, so, realized the miniaturization of equipment, realized again and fallen cost.Therefore, the Miniaturization Research of original single-fiber bidirectional optical device (BOSA) is all had to obvious positive effect to above several product, be more conducive to portioned product cost and integrated target.Therefore single-fiber bidirectional optical device encapsulation miniaturization has cost advantage, and can integrated more function.
Utility model content
In view of the above problems, the purpose of this utility model is to provide a kind of miniature passive optical-fiber network single-fiber bidirectional optical device that adopts the encapsulation of tank type, is intended to solve existing single-fiber bidirectional optical device and adopts that BOSA encapsulation volume is excessive, the technical matters of high cost.
The utility model is to realize like this, a kind of miniature passive optical-fiber network single-fiber bidirectional optical device of tank type encapsulation that adopts comprises generating laser TO base, flat window TO cap, optical fiber component, on described TO base, be pasted with Optical Transmit Unit assembly and light receiving unit assembly, the back side of TO base is also provided with pin, described flat window TO cap air-tight packaging is on described TO base, described optical fiber component coupling is welded on described flat window TO cap, and described TO base, flat window TO cap form pot type encapsulation.
The beneficial effects of the utility model are: the utility model has been realized single-fiber bidirectional device encapsulation in a TO-CAN tank type body, compare with traditional BOSA encapsulation, the utility model is mounted on Optical Transmit Unit assembly and light receiving unit assembly on TO base, and corresponding pin is positioned on same base plane, is so more conducive to BOB product upper plate.This device package part is based on existing PON package of optical device technique, part is based on surface mount process, in certain placement accuracy, can realize the BOSA encapsulating structure of existing single fiber bi-directional is converted into TO-CAN type encapsulating structure, this integrated products cost can be subject to better control, realized the miniaturization of existing PON optical device integratedly, reduced preferably again integrated cost, and be easy to integrated more function.
Accompanying drawing explanation
Fig. 1 is a kind of axial cut-open view of the miniature PON single-fiber bidirectional optical device of the employing TO-CAN encapsulation that provides of the utility model embodiment;
Fig. 2 is the axial cut-open view of single-fiber bidirectional optical device with Fig. 1 midship section quadrature;
Fig. 3 is a kind of stereographic map that adopts the miniature passive optical-fiber network single-fiber bidirectional optical device of tank type encapsulation that the utility model embodiment provides;
Fig. 4 is the stereographic map that the another kind that provides of the utility model embodiment adopts the miniature passive optical-fiber network single-fiber bidirectional optical device of tank type encapsulation.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
For technical scheme described in the utility model is described, below by specific embodiment, describe.
Fig. 1 and Fig. 2 are respectively the axial pairwise orthogonal face cross section view of the single-fiber bidirectional optical device that the utility model embodiment provides, and only show for convenience of explanation the part relevant to the utility model embodiment.
With reference to Fig. 1, Fig. 2, the miniature PON single-fiber bidirectional optical device of the employing TO-CAN encapsulation that the present embodiment provides comprises TO base 11, flat window TO cap 12, optical fiber component 13, on described TO base 11, be pasted with Optical Transmit Unit assembly 21 and light receiving unit assembly 31, the back side of TO base 11 is also provided with pin one 4, described flat window TO cap 12 air-tight packaging are on described TO base 11, described optical fiber component 13 couplings are welded on described flat window TO cap 12, and described TO base, flat window TO cap form pot type encapsulation.
In the present embodiment, Optical Transmit Unit assembly 21 and light receiving unit assembly 31 are mounted on described TO base, and air-tight packaging is in flat window TO cap 12, TO base mounts the fixing of position for what carry TO-CAN inside chip, pin with external linkage is provided, be the pin one 4 in Fig. 1 and Fig. 2, guaranteeing provides electric signal for the element (Optical Transmit Unit assembly and light receiving unit assembly) of encapsulation, and flat window TO cap is encapsulated in TO base and forms a pot type encapsulation integral body.When work, Optical Transmit Unit assembly carries out electric light conversion, finally by optical fiber component output optical signal; Light receiving unit assembly receives from the light signal of optical fiber component input, finally generates photocurrent, realizes single fiber transmitted in both directions, realizes electric light/opto-electronic conversion.
The present embodiment combines existing PON package of optical device technique, surface mount process, Optical Transmit Unit assembly and light receiving unit assembly are mounted on TO base, and pin is positioned at same TO base plane, realized the BOSA encapsulating structure of existing single-fiber bidirectional optical device has been converted into TO-CAN type encapsulating structure, dwindled product size, reduce integrated cost, and be easy to integrated more function.
A kind of concrete preferred structure of Optical Transmit Unit assembly and light receiving unit assembly is described below.For convenience, the central shaft of TO base, flat window TO cap, optical fiber component is referred to as to horizontal optical axis here, i.e. X-axis in figure, vertical described horizontal optical axis is vertical optical axis, i.e. Y-axis in figure.
Described Optical Transmit Unit assembly 21 comprises chip of laser 212, the first lens 213 being positioned on horizontal optical axis, described chip of laser 212 is electrically connected to the respective pin on described TO base, and described chip of laser 212 converts the electrical signal to light signal and exports from described optical fiber component 13 via described first lens 213.In this structure, provide electric weight with described PO base respective pin for chip of laser, chip of laser converts electrical signals to forward light signal λ 1, and forward light forms light output after first lens is incident to optical fiber component, thereby completes electric light translation function.Preferably, described Optical Transmit Unit assembly 21 also comprises that described back light detector 211 is electrically connected to the respective pin on described TO base for receiving the light dorsad that described laser chip produces the back light detector 211 of exporting back facet current.During work, described chip of laser 212 sends light dorsad and produces back facet current directly into being incident upon back light detector 211, and back-end function module can be monitored forward light power according to back facet current size.
Described light receiving unit assembly 22 comprises 45 ° of wavelength-division multiplex optical filters 311,213,0 ° of optical filter 313 of the second lens, the photodetector 315 that is positioned at vertical optical axis, from the incident light of optical fiber component 13 input, transfer to the second lens 312 via 45 ° of surperficial total reflections of wavelength-division multiplex optical filter 311, after converging, light beam is incident to described photodetector 315 by 0 ° of optical filter 313, photodetector 315 output photoelectrics flow to corresponding pin on TO base, have realized photoelectric converting function.Preferably, described light receiving unit assembly 313 also comprises prime amplifier 314, described photodetector is exported small photocurrent, and described prime amplifier amplifies small photo-signal to be converted to the corresponding pin output of voltage signal from TO base, so that rear module is processed.
The outside drawing of the single-fiber bidirectional optical device finally obtaining as shown in Figure 3, is a kind of plug-type device; Can certainly make tail fiber type device, as shown in Figure 4, at flat window TO cap end, tail optical fiber is installed.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (6)
1. a miniature passive optical-fiber network single-fiber bidirectional optical device that adopts tank type encapsulation, it is characterized in that, described single-fiber bidirectional optical device comprises generating laser TO base, flat window TO cap, optical fiber component, on described TO base, be pasted with Optical Transmit Unit assembly and light receiving unit assembly, the back side of TO base is also provided with pin, described flat window TO cap air-tight packaging is on described TO base, and described optical fiber component coupling is welded on described flat window TO cap, and described TO base, flat window TO cap form pot type encapsulation.
2. single-fiber bidirectional optical device as claimed in claim 1, it is characterized in that, described Optical Transmit Unit assembly comprises chip of laser, the first lens being positioned on horizontal optical axis, described chip of laser is electrically connected to the respective pin on described TO base, and described chip of laser converts the electrical signal to light signal and exports from described optical fiber component via described first lens.
3. single-fiber bidirectional optical device as claimed in claim 2, it is characterized in that, described Optical Transmit Unit assembly also comprises that described back light detector is electrically connected to the respective pin on described TO base for receiving the light dorsad that described laser chip produces the back light detector of exporting back facet current.
4. single-fiber bidirectional optical device as claimed in claim 1, it is characterized in that, described light receiving unit assembly comprises and is positioned at 45 ° of wavelength-division multiplex optical filters, second lens of vertical optical axis, 0 ° of optical filter, photodetector, from the incident light of optical fiber component input, transfer to the second lens via 45 ° of wavelength-division multiplex optical filters surface total reflections, after light beam converges, by 0 ° of optical filter, be incident to described photodetector, photodetector output photoelectric flow to corresponding pin on TO base.
5. single-fiber bidirectional optical device as claimed in claim 4, is characterized in that, described light receiving unit assembly also comprises prime amplifier, and the corresponding pin after described photodetector output photoelectric stream amplifies by described prime amplifier from TO base is exported.
6. single-fiber bidirectional optical device as described in claim 1-5 any one, is characterized in that, described flat window TO cap end is also provided with tail optical fiber.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420395931.1U CN204009151U (en) | 2014-07-17 | 2014-07-17 | A kind of miniature passive optical-fiber network single-fiber bidirectional optical device that adopts the encapsulation of tank type |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420395931.1U CN204009151U (en) | 2014-07-17 | 2014-07-17 | A kind of miniature passive optical-fiber network single-fiber bidirectional optical device that adopts the encapsulation of tank type |
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| CN204009151U true CN204009151U (en) | 2014-12-10 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109416446A (en) * | 2016-10-11 | 2019-03-01 | 华为技术有限公司 | A kind of optical transceiver module |
| CN114791651A (en) * | 2021-01-25 | 2022-07-26 | 讯芸电子科技(中山)有限公司 | Transistor outline package optical transceiver |
| CN115166911A (en) * | 2021-04-01 | 2022-10-11 | 讯芸电子科技(中山)有限公司 | Transistor outline package optical transceiver |
| WO2024041154A1 (en) * | 2022-08-25 | 2024-02-29 | 华为技术有限公司 | Transistor-outline package and preparation method therefor, optical device, optical module, and optical communication system |
| CN118444444A (en) * | 2024-07-01 | 2024-08-06 | 中兴通讯股份有限公司 | FTTR optical component, optical module and optical device |
-
2014
- 2014-07-17 CN CN201420395931.1U patent/CN204009151U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109416446A (en) * | 2016-10-11 | 2019-03-01 | 华为技术有限公司 | A kind of optical transceiver module |
| CN109416446B (en) * | 2016-10-11 | 2020-09-25 | 华为技术有限公司 | Optical transceiver module |
| US10855375B2 (en) | 2016-10-11 | 2020-12-01 | Huawei Technologies Co., Ltd. | Optical transceiver assembly |
| CN114791651A (en) * | 2021-01-25 | 2022-07-26 | 讯芸电子科技(中山)有限公司 | Transistor outline package optical transceiver |
| CN114791651B (en) * | 2021-01-25 | 2023-08-04 | 讯芸电子科技(中山)有限公司 | Transistor outline package optical transceiver |
| CN115166911A (en) * | 2021-04-01 | 2022-10-11 | 讯芸电子科技(中山)有限公司 | Transistor outline package optical transceiver |
| US11616577B2 (en) | 2021-04-01 | 2023-03-28 | Shunyun Technology (Zhong Shan) Limited | Optical transceiver in transistor outline package |
| WO2024041154A1 (en) * | 2022-08-25 | 2024-02-29 | 华为技术有限公司 | Transistor-outline package and preparation method therefor, optical device, optical module, and optical communication system |
| CN118444444A (en) * | 2024-07-01 | 2024-08-06 | 中兴通讯股份有限公司 | FTTR optical component, optical module and optical device |
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