CN205317979U - Adjacent wavelength receives and dispatches module - Google Patents
Adjacent wavelength receives and dispatches module Download PDFInfo
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- CN205317979U CN205317979U CN201620002790.1U CN201620002790U CN205317979U CN 205317979 U CN205317979 U CN 205317979U CN 201620002790 U CN201620002790 U CN 201620002790U CN 205317979 U CN205317979 U CN 205317979U
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Abstract
The utility model relates to an adjacent wavelength receives and dispatches module. Including transmitting terminal, first lens, receiving terminal, second lens, input/output end, graduated filter, the conical beam warp that sends via the laser diode of transmitting terminal first lens assemble, and after graduated filter transmission back by the optical fiber head of input/output end is received, via the light beam warp of the optical fiber head input of input/output end the graduated filter reflection, and after the second lens assemble the back by the photoelectric detector of receiving terminal receives. The utility model provides an adjacent wavelength receives and dispatches module can effectively separately just can obtain higher coupling efficiency to interval two little adjacent wavelength for small wavelength spaced light transceiver module subassembly can be realized and effective use.
Description
Technical field
The utility model relates to a kind of optical transceiver module assembly in optical fiber communication technology field, relates in particular to the adjacent wavelength transmitting-receiving module of a kind of small wavelength interval application.
Background technology
Along with the application of fiber optic network is more and more universal, the FTTH (FiberToTheHome) of optical fiber access especially all over the world project is progressively implemented, and point-to-point transfer of data, and the demand for bi-directional single fiber component on market is also increasing. Bi-directional single fiber component is in the market all the optical signal of two very wide wavelength of wavelength interval.
The principle of traditional dual wavelength Snigle assembly, as shown in Figure 1, optical signal enters optical module by optical fiber by common port 2, in optical module, the first filter plate 11 is miter angle with light path, there are 90 degree reflections through the first filter plate 11 in light beam, then through the second filter plate 12 filtering, then light beam is received by receiving terminal 3. It is a kind of photo-detector that receiving terminal 3 adopts PD photodiode, for opto-electronic conversion, makes optical signal be converted into the signal of telecommunication. Transmitting terminal 1 adopts laser diode, and transmitting terminal 1 light beam enters common port 2 through the first filter plate 11 transmissions. For increasing signal stabilization, reduce the various interference in transmitting procedure, put an optoisolator 10(at the front end of transmitting terminal 1 and formed by a magnet ring, two polarizers, a magnetic rotation mating plate), make line-hit can not be reflected back laser diode.
In traditional structure, because the first filter plate 11 must be 45 ° of incidents, conventional optical filter is in the time that incident angle increases, and the Transflective wave band separation of optical filter can be to short wave mobile, large 1 ° of the every change of incidence angle, and separation just moves about 6nm toward shortwave direction. Therefore in order to realize transmission and the reflection of different wave length, the wavelength interval that transmits and receives so end just must be enough wide, otherwise will cause transmission peak wavelength signal or reflection wavelength signal effectively to separate, and coupling efficiency is too low and cannot realize commercialization.
The adjacent wavelength transmitting-receiving module the utility model proposes, uses gradual filter, two little interval adjacent wavelength effectively can be separated and can obtain higher coupling efficiency, makes the optical transceiver module assembly at small wavelength interval be achieved and effectively use.
Summary of the invention
The purpose of this utility model is to provide a kind of adjacent wavelength transmitting-receiving module, two little interval adjacent wavelength effectively can be separated and can obtain higher coupling efficiency, makes the optical transceiver module assembly at small wavelength interval be achieved and effectively use.
For achieving the above object, the technical solution of the utility model is: a kind of adjacent wavelength transmitting-receiving module, comprises transmitting terminal, first lens, receiving terminal, the second lens, input/output terminal, gradual filter; The cone-shaped beam sending via the laser diode of transmitting terminal converges through described first lens, and after after described gradual filter transmission, received by the optical fiber head of described input/output terminal; Light beam via the optical fiber head input of described input/output terminal reflects through described gradual filter, and after after described the second lens converge, received by the photodetector of described receiving terminal.
In the utility model one embodiment, transmission wave band and the reflected waveband of described gradual filter change along with gradual filter change in location.
Compared to prior art, the utlity model has following beneficial effect:
1, used gradual filter, transmission wave band and the reflected waveband of gradual filter change along with gradual filter change in location;
2, two little wavelength interval adjacent wavelength effectively can be separated.
Brief description of the drawings
Fig. 1 is traditional a kind of single fiber bi-directional dual wavelength light transceiver module modular construction schematic diagram.
Transmission curve and the reflectivity curve schematic diagram of gradual filter in the time that incidence angle is 45 ° in Fig. 2 the utility model.
In Fig. 3 the utility model, adjacent wavelength is received and dispatched in module, gradual filter application schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical solution of the utility model is specifically described.
The adjacent wavelength transmitting-receiving of one of the present utility model module, comprises transmitting terminal, first lens, receiving terminal, the second lens, input/output terminal, gradual filter; The cone-shaped beam sending via the laser diode of transmitting terminal converges through described first lens, and after after described gradual filter transmission, received by the optical fiber head of described input/output terminal; Light beam via the optical fiber head input of described input/output terminal reflects through described gradual filter, and after after described the second lens converge, received by the photodetector of described receiving terminal.
In the present embodiment, the transmission wave band of described gradual filter and reflected waveband change along with gradual filter change in location.
Tell about the technical solution of the utility model by specific embodiment below.
As shown in Figure 3, the utility model provides the application of a kind of gradual filter at adjacent wavelength transmitting-receiving module, comprises transmitting terminal 1, first lens 41, receiving terminal 3, the second lens 42, input/output terminal 2, gradual filter 5. The cone-shaped beam that transmitting terminal laser diode 1 sends converges through first lens 41, then is received by input/output terminal optical fiber head 2 after arriving gradual filter 5 transmissions. The light beam of being inputted by input/output terminal optical fiber head 2 arrives the second lens 42 after gradual filter 5 reflects, and after being converged, is received by receiving terminal photodetector 3 by the second lens 42. Please refer to Fig. 2, transmission curve and the reflectivity curve schematic diagram of gradual filter in the time that incidence angle is 45 ° in the utility model.
Transmission wave band and the reflected waveband of gradual filter change along with gradual filter change in location. Shown in Fig. 2 gradual filter 5 at position a, b, the transmission curve at c place and reflectivity curve. On gradual filter 5, the transmission curve of the 45 ° of incidence angles in a point position and reflectivity curve are set as meeting the curve that optical transceiver module requires, the transmission curve of the 45 ° of incidence angles in c point position is compared a point position to short wave mobile with reflectivity curve, the transmission curve of the 45 ° of incidence angles in b point position is compared a point position and moved to long wave with reflectivity curve. Because receiving, the optical fiber head transmitting of input/output terminal 2 all have certain angle of divergence to be ± θ (as shown in Figure 3). In the time that divergent beams arrive gradual filter 5, be 45 ° in the incidence angle of a point position, become greatly (45+ θ) ° in the incidence angle of b point position, the incidence angle of c point position diminishes as (45-θ) ° in addition. Due in the time that incident angle increases, the transmission curve of optical filter and reflectivity curve are to short wave mobile, therefore when light beam arrives when b point position because incidence angle becomes greatly, therefore the transmission curve of gradual filter 5 and reflectivity curve, to short wave mobile, move to the curve that meets the demands of a point position; Therefore when light beam arrives when c point position because incidence angle diminishes, therefore the transmission curve of gradual filter 5 and reflectivity curve move to long wave, move to the curve that meets the demands of a point position. The parameter index of gradual filter 5 is set in the wavelength interval that therefore can transmit and receive according to the variation of dispersion angle θ and optical transceiver module.
Above-listed preferred embodiment; the purpose of this utility model, technical scheme and advantage are further described; institute is understood that; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (2)
1. an adjacent wavelength transmitting-receiving module, is characterized in that: comprise transmitting terminal, first lens, receiving terminal, the second lens, input/output terminal, gradual filter; The cone-shaped beam sending via the laser diode of transmitting terminal converges through described first lens, and after after described gradual filter transmission, received by the optical fiber head of described input/output terminal; Light beam via the optical fiber head input of described input/output terminal reflects through described gradual filter, and after after described the second lens converge, received by the photodetector of described receiving terminal.
2. the adjacent wavelength transmitting-receiving of one according to claim 1 module, is characterized in that: transmission wave band and the reflected waveband of described gradual filter change along with gradual filter change in location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620002790.1U CN205317979U (en) | 2016-01-05 | 2016-01-05 | Adjacent wavelength receives and dispatches module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620002790.1U CN205317979U (en) | 2016-01-05 | 2016-01-05 | Adjacent wavelength receives and dispatches module |
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| CN205317979U true CN205317979U (en) | 2016-06-15 |
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| CN201620002790.1U Active CN205317979U (en) | 2016-01-05 | 2016-01-05 | Adjacent wavelength receives and dispatches module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072944A (en) * | 2018-01-19 | 2018-05-25 | 深圳市亚派光电器件有限公司 | A kind of optical transceiver |
| CN110057465A (en) * | 2019-01-31 | 2019-07-26 | 西安和其光电科技股份有限公司 | Optical module and photoelectricity demodulation module for fluorescence optical fiber temperature control system |
-
2016
- 2016-01-05 CN CN201620002790.1U patent/CN205317979U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072944A (en) * | 2018-01-19 | 2018-05-25 | 深圳市亚派光电器件有限公司 | A kind of optical transceiver |
| CN110057465A (en) * | 2019-01-31 | 2019-07-26 | 西安和其光电科技股份有限公司 | Optical module and photoelectricity demodulation module for fluorescence optical fiber temperature control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Adjacent wavelength receives and dispatches module Effective date of registration: 20170216 Granted publication date: 20160615 Pledgee: Bank of China Limited by Share Ltd Fuzhou City Branch Pledgor: FUZHOU TENGJING OPTOELECTRONICS TECHNOLOGY CO., LTD. Registration number: 2017350000028 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 350015 five floors and three floors of building a and building B, building 1, Chashan Road, Mawei science and Technology Park, Fuzhou City, Fujian Province Patentee after: Tengjing Technology Co., Ltd Address before: 350015, tea mountain road, Mawei hi tech park, Fujian, Fuzhou Patentee before: FUZHOU TENGJING OPTOELECTRONICS TECHNOLOGY CO., LTD. |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20200612 Granted publication date: 20160615 Pledgee: Bank of China Limited by Share Ltd. Fuzhou City Branch Pledgor: FUZHOU OPTOWIDE TECHNOLOGIES Co.,Ltd. Registration number: 2017350000028 |