CN208188414U - A kind of single fiber Single wavelength bidirectional transmit-receive modular assembly - Google Patents
A kind of single fiber Single wavelength bidirectional transmit-receive modular assembly Download PDFInfo
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- CN208188414U CN208188414U CN201820789785.9U CN201820789785U CN208188414U CN 208188414 U CN208188414 U CN 208188414U CN 201820789785 U CN201820789785 U CN 201820789785U CN 208188414 U CN208188414 U CN 208188414U
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- modular assembly
- transparent semi
- transmitting terminal
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Abstract
The utility model provides a kind of single fiber Single wavelength bidirectional transmit-receive modular assembly, it is characterised in that: is sequentially arranged with transmitting terminal, semi-transparent semi-reflecting, input/output terminal, has negative lens and isolator between transmitting terminal and semi-transparent semi-reflecting；The optical path of semi-transparent semi-reflecting and transmitting terminal to input/output terminal is in 45 degree angles, and the position that the two sides of optical path correspond to semi-transparent semi-reflecting is respectively equipped with receiving end and absorbing sheet.The utility model proposes single fiber Single wavelength bidirectional transmit-receive modular assembly, can there be sufficiently high output power in suitable cost performance for present laser diode, using directional light coupling scheme, using the combination of semi-transparent semi-reflecting diaphragm, absorbing sheet and isolator, the difficulty that avoids the interference of Single wavelength or adjacent wavelength and can not separate, so that the single fiber Single wavelength bidirectional transmit-receive modular assembly of any wavelength interval is achieved and effectively uses, it is completely compatible with existing Snigle in external form.
Description
Technical field
The utility model relates to one of technical field of optical fiber communication optical transceiver module components, more particularly, to a kind of list
Fine Single wavelength bidirectional transmit-receive modular assembly.
Background technique
As fiber optic network is using more more and more universal, especially all over the world intelligent acess FTTH (Fiber To The
Home) project is gradually implemented and the transmission of point-to-point data, in the market also increasingly for the demand of bi-directional single fiber component
Greatly.Bi-directional single fiber component currently on the market is all the optical signal of two very wide wavelength of wavelength interval.
The principle of the Snigle component of simplest structure, as shown in Figure 1, optical signal is by optical fiber by defeated
Enter output end 2 into optical module, in optical module, the first filter plate 11 is in 45 degree of angles with optical path, and light beam is by the first filter
90 degree of reflections occur for wave plate 11, filter using the second filter plate 12, then light beam is received by receiving end 3.Receiving end 3 uses PD
Photodiode is a kind of optical detector, is used for photoelectric conversion, optical signal is made to be converted into electric signal.Transmitting terminal 1 uses laser two
Pole pipe, 1 light beam of transmitting terminal are transmitted into input/output terminal 2 by the first filter plate 11.
The principle of traditional dual wavelength Snigle component is as shown in Fig. 2, other principles and the same figure of description
1, to increase signal stabilization, the various interference in transmission process are reduced, put an optoisolator 10 in the front end of transmitting terminal 1
(being made of a magnet ring, two polarizing films, a magnetic rotation mating plate), makes line-hit not to be reflected back laser diode.
In traditional architectures, because the first filter plate 11 must be 45 ° of incidences, the transmission and reflection of different wave length are realized,
So to meet application requirement, then the wavelength of transmitting and receiving end just must be sufficiently wide, transmitted wave long letter otherwise will lead to
Number or reflection wavelength signal can not effectively separate.
Utility model content
The utility model provides a kind of single fiber Single wavelength bidirectional transmit-receive modular assembly, and the purpose is to solve lacking for the prior art
Point, so that the single fiber Single wavelength bidirectional transmit-receive modular assembly of any wavelength interval is achieved and effectively uses.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
A kind of single fiber Single wavelength bidirectional transmit-receive modular assembly, it is characterised in that: be sequentially arranged with transmitting terminal, semi-transparent semi-reflecting
Piece, input/output terminal have negative lens and isolator between transmitting terminal and semi-transparent semi-reflecting；Semi-transparent semi-reflecting with transmitting terminal to defeated
Enter the optical path of output end in 45 degree of angles, the two sides of optical path are respectively equipped with receiving end and absorption corresponding to semi-transparent semi-reflecting position
Piece.
Semi-transparent semi-reflecting, negative lens, isolator, transmitting terminal sequence arrangement.
Semi-transparent semi-reflecting, isolator, negative lens, transmitting terminal sequence arrangement.
The input and output lock pin and collimation lens of input/output terminal are coated with plating anti-reflection film, the optical flat of input/output terminal
It is in inclined-plane angle with beam Propagation direction.
The utility model has the beneficial effect that
The utility model proposes single fiber Single wavelength bidirectional transmit-receive modular assembly, can be for present laser diode
Have sufficiently high output power in suitable cost performance, using directional light coupling scheme, using semi-transparent semi-reflecting diaphragm, absorbing sheet and
The combination of isolator, the difficulty that avoids the interference of Single wavelength or adjacent wavelength and can not separate, so that any wavelength interval
Single fiber Single wavelength bidirectional transmit-receive modular assembly be achieved and effectively use, in external form completely with existing single-fiber bidirectional optical
Transceiver module is compatible.
Detailed description of the invention
A kind of single fiber bi-directional dual wavelength light transceiver module component structure diagram of Fig. 1 simple structure；
A kind of Fig. 2 traditional single fiber bi-directional dual wavelength light transceiver module component structure diagram；
A kind of single fiber Single wavelength bidirectional transmit-receive modular assembly structural schematic diagram in Fig. 3 present invention.
Specific embodiment
In order to illustrate more clearly of the technical solution of the utility model, attached drawing needed in description will be made below
Simply introduce, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, for this field
For those of ordinary skill, without creative efforts, it can also be obtained according to these attached drawings other implementations
Example.
It is as shown in Figure 3:
The utility model proposes a kind of transceiver module components of single fiber bi-directional.It is defeated including transmitting terminal 1, receiving end 3, input
Outlet 2, optical module.The optical module includes semi-transparent semi-reflecting 41, absorbing sheet 42, negative lens 51, isolator 61.
Transmitting terminal 1, semi-transparent semi-reflecting 41, input/output terminal 2 sequentially arrange, have between transmitting terminal 1 and semi-transparent semi-reflecting 41
There are isolator 61 and negative lens 51；Semi-transparent semi-reflecting 41 optical path for arriving input/output terminal 2 with transmitting terminal 1 is in 45 degree of angles, optical path
Two sides be respectively equipped with receiving end 3 and absorbing sheet 42 corresponding to semi-transparent semi-reflecting 41 position.
The light beam λ issued by 1 laser diode of transmitting terminal1It is converging beam, is transmitted through isolator 61, then through negative lens
After 51 expand, become collimated light beam, after semi-transparent semi-reflecting 41 transmission, transmitted light is received by input/output terminal 2；By semi-transparent
After half anti-piece 41 reflects, absorbed by absorbing sheet 42.Obviously, the front-rear position of negative lens 51 and isolator 61 is exchanged, and function is also
It can equally fully achieve.
Light beam λ is inputted by input/output terminal 22, it is collimated light beam, after semi-transparent semi-reflecting 41 reflection, λ2Receiving end 3 is reached,
The photodiode of receiving end 3 receives；Through semi-transparent semi-reflecting 41 transmit light, isolator of coming in, by isolator 61 intercept and
It absorbs.
The utility model proposes single fiber Single wavelength bidirectional transmit-receive modular assembly, can be for present laser diode
Have sufficiently high output power in suitable cost performance, using directional light coupling scheme, using semi-transparent semi-reflecting diaphragm, absorbing sheet and
The combination of isolator, the difficulty that avoids the interference of Single wavelength or adjacent wavelength and can not separate, so that any wavelength interval
Single fiber Single wavelength bidirectional transmit-receive modular assembly be achieved and effectively use, in external form completely with existing single-fiber bidirectional optical
Transceiver module is compatible.
The single fiber Single wavelength bidirectional transmit-receive modular assembly of the utility model uses semi-transparent semi-reflecting, absorbing sheet, isolator etc.
Combination simplifies structure, reduces cost, there is integrated advantage, in low crosstalk, material consumption, volume, there is common solution single fiber unicast
The advantage that long bidirectional transmit-receive modular assembly can not be compared.
The single fiber Single wavelength bidirectional transmit-receive modular assembly of the utility model is characterized in that:
1, transmitting terminal and the optical signal of receiving end are same wavelength, or have the optical signal of certain wavelength interval, and wavelength
Interval can require to adjust from zero to arbitrary value according to related application, and it is exactly Single wavelength that wavelength interval, which is zero,.
2, the optical signal of input/output terminal is collimated light beam in device-side, it is possible to prevente effectively from the big angle of convergence divergent beams
Spend crosstalk caused by light beam.
3, the light that transmitting terminal issues, the part reflected by semi-transparent semi-reflecting are absorbed piece absorption；The light of input terminal incidence,
The part transmitted by semi-transparent semi-reflecting, is absorbed by isolator.To sufficiently eliminate veiling glare in the optical path, crosstalk is greatly decreased.
4, input and output lock pin and collimation lens, reduce return loss by the way of plating anti-reflection film, and optical flat is used to light
Beam transmission direction is that the mode on inclined-plane reduces return loss.To which crosstalk be greatly decreased.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.To the upper of the disclosed embodiments
It states bright, can be realized professional and technical personnel in the field or using the utility model.Various modifications to these embodiments pair
It will be apparent for those skilled in the art, the general principles defined herein can not depart from this reality
In the case where with novel spirit or scope, realize in other embodiments.Therefore, the utility model is not intended to be limited to this
These embodiments shown in text, and it is to fit to the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. a kind of single fiber Single wavelength bidirectional transmit-receive modular assembly, it is characterised in that: be sequentially arranged with transmitting terminal, semi-transparent semi-reflecting,
Input/output terminal has negative lens and isolator between transmitting terminal and semi-transparent semi-reflecting；Semi-transparent semi-reflecting with transmitting terminal to input
The optical path of output end is in 45 degree of angles, and the two sides of optical path are respectively equipped with receiving end and absorption corresponding to semi-transparent semi-reflecting position
Piece.
2. a kind of single fiber Single wavelength bidirectional transmit-receive modular assembly as described in claim 1, it is characterised in that: semi-transparent semi-reflecting,
Negative lens, isolator, transmitting terminal sequence arrange.
3. a kind of single fiber Single wavelength bidirectional transmit-receive modular assembly as described in claim 1, it is characterised in that: semi-transparent semi-reflecting,
Isolator, negative lens, transmitting terminal sequence arrange.
4. a kind of single fiber Single wavelength bidirectional transmit-receive modular assembly as described in claim 1, it is characterised in that: input/output terminal
Input and output lock pin and collimation lens are coated with plating anti-reflection film, and the optical flat of input/output terminal and beam Propagation direction are in inclined-plane
Angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820789785.9U CN208188414U (en) | 2018-05-25 | 2018-05-25 | A kind of single fiber Single wavelength bidirectional transmit-receive modular assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820789785.9U CN208188414U (en) | 2018-05-25 | 2018-05-25 | A kind of single fiber Single wavelength bidirectional transmit-receive modular assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208188414U true CN208188414U (en) | 2018-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820789785.9U Active CN208188414U (en) | 2018-05-25 | 2018-05-25 | A kind of single fiber Single wavelength bidirectional transmit-receive modular assembly |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109581597A (en) * | 2019-01-30 | 2019-04-05 | 宇捷光子科技(南京)有限公司 | A kind of Wave division multiplexing optical transmission system of simplex optical module composition |
| CN110058362A (en) * | 2019-04-23 | 2019-07-26 | 中国计量大学 | A kind of single-optical fiber bi-directional transceiver part based on pentagon prism and interferometric filter |
| WO2021135968A1 (en) * | 2020-01-02 | 2021-07-08 | 福建天蕊光电有限公司 | High-speed transceiving module for 5g middlehaul |
-
2018
- 2018-05-25 CN CN201820789785.9U patent/CN208188414U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109581597A (en) * | 2019-01-30 | 2019-04-05 | 宇捷光子科技(南京)有限公司 | A kind of Wave division multiplexing optical transmission system of simplex optical module composition |
| CN110058362A (en) * | 2019-04-23 | 2019-07-26 | 中国计量大学 | A kind of single-optical fiber bi-directional transceiver part based on pentagon prism and interferometric filter |
| WO2021135968A1 (en) * | 2020-01-02 | 2021-07-08 | 福建天蕊光电有限公司 | High-speed transceiving module for 5g middlehaul |
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