CN105759370A - Anti-crosstalk coaxial optical transceiver integrated device - Google Patents
Anti-crosstalk coaxial optical transceiver integrated device Download PDFInfo
- Publication number
- CN105759370A CN105759370A CN201610000506.1A CN201610000506A CN105759370A CN 105759370 A CN105759370 A CN 105759370A CN 201610000506 A CN201610000506 A CN 201610000506A CN 105759370 A CN105759370 A CN 105759370A
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- China
- Prior art keywords
- base
- optical filter
- wdm optical
- groove
- crosstalk
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Classifications
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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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention discloses an anti-crosstalk coaxial optical transceiver integrated device, and particularly discloses a single-TO CAN coaxial optical transceiver integrated device applied to the field of optical communication. The device is composed of an TO tube seat with a groove, a WDM filter structure playing a role of isolating electric and optical signal crosstalk, a tube cap with a ball lens, and elements such as an LD, a PD, a TIA, a capacitor and a resistor. Emitted light by the LD is reflected by the WDM filter placed on the same plane as the LD and reaches the lens, the light is focused by the lens and coupled to an optical fiber; a receiving optical signal from the same optical fiber is focused by the lens, then passes through the WDM filter and a light transmission hole playing a role of shielding, and reaches a PD light receiving surface located in the TO tube seat groove subjected to shielding protection. The special structure of the invention uses the minimal number of elements and effectively solves electric and optical crosstalk between transmitting and receiving in tiny small space. Compared with a currently-used BOSA, the material cost is reduced, the production efficiency can be greatly improved, and the miniaturization requirements of the product can be realized.
Description
Technical field
The present invention relates to the core light device in optical communication field---light transmit-receive integrated device, particularly will launch components and parts and receive components and parts, and WDM optical filter will be encapsulated in the airtight package TOCAN of a coaxial shape.
Background technology
Traditional Single-fiber two-way light transceiver part is by two independent transmittings and receives coaxial shape packaging (hereinafter referred to as TOCAN), and optical fiber connects plug-in unit, by adopting the techniques such as laser weld to integrate equipped with the hardware of WDM optical filter.SeeAccompanying drawing 1。
Just substantially have employed similar techniques at mass-produced transceiver device in the market, it major downside is that volume is relatively big, and the course of processing is complicated, inefficiency, cost decline limited space.Due to it, application is huge, cost is extremely sensitive.
To launch and receive is partially encapsulated in the space of same only small TOCAN, the problem that will produce very big optical, electrical crosstalk etc., to such an extent as to makes the device cannot normal operation.
When transmitting terminal, receiving terminal, and WDM filter plate etc. are integrated in only small same TOCAN inner space, how well to suppress internal produced light electrical crosstalk, improve input and output optical signal quality and reliability, become a key issue needing to solve.
Summary of the invention
The present invention can well solve to launch and receive in single TOCAN simultaneously between the problem of electrical crosstalk and the interference of scattering-in light.
Special construction designed in the application of the invention, it is possible to be effectively isolated signal of telecommunication crosstalk and the optical signal crosstalk of transmitting terminal and receiving terminal, thus improving quality and the reliability of input and output optical signal.
Emitting portion and receiving portion are separated in two relatively independent spaces by the present invention, have effectively intercepted the electromagnetic crosstalk between launching and receiving.Meanwhile, only the optical signal in effective coverage could pass through WDM optical filter arrival photodiode PD so that other most of scattered stray lights coming from laser diode LD can not arrive the light area of PD.
The light transmit-receive integrated device of single fiber bi-directional of the present invention, is made up of a TO base, globe lens pipe cap, LD, PD, TIA, WDM and required capacitance resistance etc..SeeAccompanying drawing 2,3,4,5。
Accompanying drawing explanation
For advantages of the present invention and uniqueness, below figure has been explained in more detail in illustrating.
Accompanying drawing 1: it is a kind of technology commonly used at present, by emitting portion TOCAN(1), receive part TOCAN(2), optical fiber contact pins assembly (4) and WDM optical filter (5), utilize the pedestal (3) with WDM optical filter fixed mechanism, fitted together by methods such as laser weld.
Accompanying drawing 2: inner plane layout viewing, it does not have include WDM optical filter.(1) for TO base, (2) be pin, (3) be glass insulator, (4) be LD and Submount, (5) be PD, (6) be TIA, (7) be recessed groove position, (8) be electric capacity.Resistance can also be put as required, figure indicates.
Accompanying drawing 3: the profile of the present invention.(11) for WDM optical filter, (9) be pipe cap, (10) be globe lens.
Accompanying drawing 4: the section of the WDM optical filter of the present invention, and top and bottom figure.
Accompanying drawing 5: the another kind of optical filter modes of emplacement of the present invention.
Accompanying drawing 6: index path.
Detailed technology explanation
Here in connection with accompanying drawing, the present invention is described in detail.In order to the simple and clear explanation present invention, eliminate the detailed description to each known elements function and size.
Fig. 2WithFig. 3For utilizing single TOCAN to substitute the principle schematic of the essential structure of double; two TOCANBOSA at present.In actual applications, the arrangement of pin (2) in Fig. 2 can need suitably adjust according to technique on the basis of this figure, and the basic principle of adjustment is easy for automatic chip mounting and routing, and shortens the length of routing as much as possible, reduces the loss of signal.
Single TOCAN bidirectional light receiving and transmitting one device of the present invention, is made up of TO base, globe lens pipe cap, WDM optical filter, LD, PD, TIA etc..Filtering Submount is there may be below LD and PD.Can having electric capacity, resistance etc. in groove part (7) as required, this part, not as present disclosure, is not here described in detail.
Fig. 3In, if the thickness of TO base is 1.50mm, the space of groove can meet the requirement of chip placement and routing, and can meet the air-tightness of base and the requirement to pin sealing strength.The highest point of gold thread at least wants to leave the space of 50um between WDM optical filter.
Fig. 4In 45 ° of chamfered portions of WDM optical filter be film plating layer, the film system of this rete makes the incident illumination of LD upwards be totally reflected to glass lens, make the incident illumination focused on through globe lens from optical fiber through filter plate.In this figure, bottom surface is metal level, change metal level can be gold, silver or other can play the metal of shielding action.Metal level at bottom to reserve a circular window so that PD is able to receive that by the optical signal that globe lens is come in.Owing to the wavelength of ripple is disturbed in its aperture less than electromagnetism, it is possible to the electrical crosstalk between effective isolation transmitting terminal and receiving terminal.Metal level can make by being deposited with or the technique such as brushing is formed.
Fig. 5 is another kind of implementation.Optical filter is pasted onto on 45 ° of inclined-planes of metal cover board.Having a through hole on the inclined-plane of metal cover board, the position of through hole is positioned in the light path of PD incident illumination.This metal sheet surface nickel plating or gold-plated.
Fig. 6For light path schematic diagram.Owing to the bottom surface in the present invention is with the WDM optical filter (Fig. 4) of Shielding coating, or the metal cover board (Fig. 5) with optical filter, can effectively intercept the crosstalk of electricity and light, make LD and PD can carry out overall compact arrangement, not only meet the requirement of device miniaturization, and eliminate the condenser lens in LD or PD light path.
LD, PD, the TIA etc. used in the present invention, can adopt at present the generally chip of application in TOSA and ROSA.The globe lens diameter adopted is 2.0mm, can also use the globe lens of plating AR film to improve coupling efficiency.
Fig. 2WithFig. 3The TO base adopted in the shown present invention, base plate (1) material is ferrum, iron-nickel alloy or kovar alloy, through being stamped to form.Pin (2) material is iron-nickel alloy or kovar alloy.Insulating glass (3) is the material mated with base and pin-type.Above material through high temperature sintering together, then through nickel plating plate, gold etc. surface treatment.LD(4), PD(5), TIA(6) complete the technique such as paster, routing after, by Fig. 4 or Fig. 5 with function of shielding WDM optical filter (11) by some an elargol be fixed on base plate (1).For can cut down nickel plating, globe lens (10) is sintered on pipe cap pipe cap (9) with low temperature glass solder.Pipe cap and base adopt Resistance Welding to be connected together.The TOCAN completed is connected with optical fiber by joint, constitutes the light transmit-receive integrated device of coaxial shape of a complete effective anti-crosstalk.
The light transmit-receive integrated device of single TOCAN of the present invention is compared with double; two light transmit-receive integrated devices of TOCAN, has apparent advantage.Not only material cost is substantially reduced, owing to processing technique is simpler, it is possible to production efficiency is greatly improved, and reduces production cost.
Claims (8)
1. the anti-crosstalk light transmit-receive integrated device of coaxial shape of invention is made up of following several parts: a TO base, one is welded on the pipe cap on base, one is welded on the lens on pipe cap by low temperature glass, one is welded on the WDM optical filter with function of shielding above TO base groove or the WDM optical filter being pasted onto on metallic shield cover plate by conductive solder, one LD being placed on TO base upper surface, one PD being placed in TO base groove, one TIA being placed in TO base groove, and it is placed on the resistance in TO base groove and electric capacity, but it is not limited to only one PD of use, upper surface as needed in TO base can increase a detection PD monitoring LD current power.
2. claim1In TO base, have one can hold PD, TIA, resistance, electric capacity and the groove of 4 or more than 4 pins.
3. claim1In TO base groove in the height of four pins lower than plane on base plate, be enclosed in the space that WDM optical filter and base are formed, and leave the space of routing.
4. claim1In WDM optical filter, its 45 ° of chamfered portions are coated with the rete with wavelength-division function, and bottom surface is coated with the metal level that can play shielding action, and around there is the conductive solder for welding together with base on four limits.
5. claim1In the WDM optical filter with function of shielding, there is one layer of metal level playing shielding action its bottom surface, metal has one do not have coated circular loophole, it is ensured that to receive optical signal and can arrive the sensitive area of PD.
6. the WDM optical filter being pasted onto on metallic shield cover plate in claim 1,45 ° of inclined-planes of its metal cover board posts WDM optical filter, and has a circular loophole on the receiving light path on 45 ° of inclined-planes, it is ensured that receives optical signal and can arrive the sensitive area of PD.
7. claim4With5Described in WDM optical filter or metal cover board be welded to claim by conductive solder2Described in TO base groove above, make space in the groove of TO base and the isolation of its space outerpace, play electromagnetic shielding and the effect of isolation veiling glare.
Welding between 8.WDM optical filter or metal cover board with base not necessarily completely encloses, as long as shield effectiveness reaches requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610000506.1A CN105759370A (en) | 2016-01-04 | 2016-01-04 | Anti-crosstalk coaxial optical transceiver integrated device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610000506.1A CN105759370A (en) | 2016-01-04 | 2016-01-04 | Anti-crosstalk coaxial optical transceiver integrated device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105759370A true CN105759370A (en) | 2016-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610000506.1A Pending CN105759370A (en) | 2016-01-04 | 2016-01-04 | Anti-crosstalk coaxial optical transceiver integrated device |
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| CN (1) | CN105759370A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111865429A (en) * | 2019-04-30 | 2020-10-30 | 深圳市聚飞光电股份有限公司 | Photoelectric receiver and manufacturing method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11218651A (en) * | 1998-01-30 | 1999-08-10 | Sumitomo Electric Ind Ltd | Optical transmission and reception module |
| US20040071413A1 (en) * | 2002-10-10 | 2004-04-15 | Masahiko Tsumori | Bi-directional optical transceiver module with double caps and method of improving the efficiency and the reliability of same |
| US20040146304A1 (en) * | 2003-01-24 | 2004-07-29 | Yoshiki Kuhara | Optical transceiver modules |
| CN101639555A (en) * | 2008-07-29 | 2010-02-03 | 光环科技股份有限公司 | Optical transceiving component and bidirectional optical secondary module with same |
| CN102118194A (en) * | 2010-12-28 | 2011-07-06 | 聚信科技有限公司 | Single fiber bi-directional optical element and assembly method thereof |
| US20120128295A1 (en) * | 2010-11-22 | 2012-05-24 | Electronics And Telecommunications Research Institute | Multi-channel optical module |
| CN102934385A (en) * | 2010-04-07 | 2013-02-13 | 韩国电子通信研究院 | Bidirectional optical transmission and receiving device |
| US20150372759A1 (en) * | 2014-06-18 | 2015-12-24 | Electronics And Telecommunications Research Institute | Bidirectional optical transceiver module and method of aligning the same |
-
2016
- 2016-01-04 CN CN201610000506.1A patent/CN105759370A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11218651A (en) * | 1998-01-30 | 1999-08-10 | Sumitomo Electric Ind Ltd | Optical transmission and reception module |
| US20040071413A1 (en) * | 2002-10-10 | 2004-04-15 | Masahiko Tsumori | Bi-directional optical transceiver module with double caps and method of improving the efficiency and the reliability of same |
| US20040146304A1 (en) * | 2003-01-24 | 2004-07-29 | Yoshiki Kuhara | Optical transceiver modules |
| CN101639555A (en) * | 2008-07-29 | 2010-02-03 | 光环科技股份有限公司 | Optical transceiving component and bidirectional optical secondary module with same |
| CN102934385A (en) * | 2010-04-07 | 2013-02-13 | 韩国电子通信研究院 | Bidirectional optical transmission and receiving device |
| US20120128295A1 (en) * | 2010-11-22 | 2012-05-24 | Electronics And Telecommunications Research Institute | Multi-channel optical module |
| CN102118194A (en) * | 2010-12-28 | 2011-07-06 | 聚信科技有限公司 | Single fiber bi-directional optical element and assembly method thereof |
| US20150372759A1 (en) * | 2014-06-18 | 2015-12-24 | Electronics And Telecommunications Research Institute | Bidirectional optical transceiver module and method of aligning the same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111865429A (en) * | 2019-04-30 | 2020-10-30 | 深圳市聚飞光电股份有限公司 | Photoelectric receiver and manufacturing method thereof |
| CN111865429B (en) * | 2019-04-30 | 2022-05-27 | 深圳市聚飞光电股份有限公司 | Photoelectric receiver and manufacturing method thereof |
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Application publication date: 20160713 |
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