CN109581597A - A kind of Wave division multiplexing optical transmission system of simplex optical module composition - Google Patents
A kind of Wave division multiplexing optical transmission system of simplex optical module composition Download PDFInfo
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- CN109581597A CN109581597A CN201910089623.3A CN201910089623A CN109581597A CN 109581597 A CN109581597 A CN 109581597A CN 201910089623 A CN201910089623 A CN 201910089623A CN 109581597 A CN109581597 A CN 109581597A
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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
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
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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
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29379—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
- G02B6/2938—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM
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Abstract
Present invention discloses a kind of Wave division multiplexing optical transmission systems of simplex optical module composition, including two groups of simplex optical modules, a pair of of Wavelength division multiplexer/demultiplexer 201 and 202, and the telecommunication optical fiber 300 of connection first Wavelength-division multiplexer/demultiplexer 201 and the second Wavelength-division multiplexer/demultiplexer 202, wherein, two groups of simplex optical modules are simplex optical module of the n to co-wavelength, and operation wavelength is respectively λ1, λ2......λnTwo groups of simplex optical modules 101n and 102n pass through the first Wavelength-division multiplexer/demultiplexer (201) respectively and the second Wavelength-division multiplexer/demultiplexer 202 is connected to telecommunication optical fiber 300, wherein n >=2, the work characteristics of the simplex optical module of co-wavelength transmission is mainly utilized in the system, realize the purpose of the transmitted in both directions wavelength-division multiplex signals in same root long-distance optical fiber, under the premise of guaranteeing that communication band does not reduce 50%, a pair of of Wavelength-division multiplexer/demultiplexer and a long-distance optical fiber are saved, maximally utilizing for the communication resource is realized.
Description
Technical field
The present invention relates to technical field of photo communication, and in particular to it is a kind of by co-wavelength transmission simplex optical module form
Wave division multiplexing optical transmission system.
Background technique
Before the simplex optical module commercialization of co-wavelength transmitting-receiving, most wavelength-division multiplex system needs to use two
Root single mode optical fiber realizes transmitted in both directions, as shown in Figure 1.Also useful single single mode optical fiber completes different wavelength transmitted in both directions, cost
It is that port number reduces 50%, such as Fig. 2.It is said in meaning from here, double-fiber bidirectional transmit-receive optical module originally can not maximized benefit
Use fiber resource.
Summary of the invention
To solve the above-mentioned problems, present invention discloses a kind of simplex optical modules using co-wavelength transmitting-receiving to realize
The wavelength-division multiplex system of single fiber bi-directional transmission, to maximally utilize existing fiber resource.
Present invention discloses a kind of Wave division multiplexing optical transmission system of simplex optical module composition, including two groups of single fibers are double
To optical module, a pair of of Wavelength division multiplexer/demultiplexer 201 and 202 and connection 201 He of the first Wavelength-division multiplexer/demultiplexer
The telecommunication optical fiber 300 of second Wavelength-division multiplexer/demultiplexer 202, wherein two groups of simplex optical modules are n to same wave
Long simplex optical module, operation wavelength are respectively λ1, λ2......λnTwo groups of simplex optical modules 101n and 102n point
Not Tong Guo the first Wavelength-division multiplexer/demultiplexer (201) and the second Wavelength-division multiplexer/demultiplexer 202 be connected to telecommunication optical fiber
300, wherein n >=2.
As the further improvement of the embodiment of the present invention, n simplex optical module 101n in described system one end,
N optical module operation wavelength is λn, n-th of optical module 101n passes through single mode optical fiber 301 and the first wavelength division multiplexer/demultiplex
It is connected with device 201；In the corresponding another n simplex optical module 102n of the system other end, the work of n-th of optical module
Making wavelength is λn, n-th of optical module 102n passes through single mode optical fiber 302 and the second Wavelength-division multiplexer/demultiplexer 202 connects
It connects, wherein n >=2.
As the further improvement of the embodiment of the present invention, the n simplex optical module 101n of described system one end connects
It is connected to the corresponding operation wavelength port of the first Wavelength-division multiplexer/demultiplexer, operation wavelength λnOptical module connect first wave
Division multiplexer/demultiplexer λnWavelength port；The public port of first Wavelength-division multiplexer/demultiplexer 201 is logical by one
Letter optical fiber 300 is connected to the public port of the second Wavelength-division multiplexer/demultiplexer 202, the second Wavelength-division multiplexer/demultiplexer
202 and the system other end n co-wavelength transmission simplex optical module 102 by n root single mode optical fiber 302 connection.
In the Wave division multiplexing optical transmission system that the simplex optical module of present pre-ferred embodiments forms, the single fiber
Bidirectional optical module includes optical patchcord socket T1, optical receiving end T2 and light emitting end T3, the optical receiving end T2 and light emitting end
T3 work places conduct in Same Wavelength, and between the optical receiving end T2, light emitting end T3 and optical patchcord socket T1
The half-reflection and half-transmission eyeglass or miniature toroidal device of three-dimensional optical device.
As the further improvement of the embodiment of the present invention, the common end of the Wavelength division multiplexer/demultiplexer (201 and 202)
Mouth is com port, and only a port.
As the further improvement of the embodiment of the present invention, described simplex optical module one end is equipped with PCB circuit board, described
Effective connection number of pins of the light emitting end of simplex optical module and the PCB circuit board is 4.
The Wave division multiplexing optical transmission system of the simplex optical module composition of preferred embodiment according to the present invention, wherein institute
Stating wavelength-division multiplex is wavelength interval in 0.4nm to the communication band between 20nm.
As the further improvement of the embodiment of the present invention, the wavelength-division multiplex is communication band of the wavelength interval in 10nm.
The Wave division multiplexing optical transmission system of the simplex optical module composition of preferred embodiment according to the present invention, wherein institute
The number of channel for stating Wave division multiplexing optical transmission system is 20-36.
Compared with prior art, wavelength-division multiplex system provided by the invention has the advantage that through co-wavelength transmitting-receiving
The utilization of simplex optical module completes building for the wavelength-division multiplex system of single fiber bi-directional transmission.This new system, with original
The wavelength-division multiplex system come is compared, and 50% fiber resource and wavelength division multiplex device have been saved, and has been reached more preferable and has been provided using optical fiber
The purpose in source and wavelength resource.
Detailed description of the invention
Fig. 1 is the topological diagram of existing double-fiber transmitted in both directions wavelength-division multiplex system, need two groups of Wavelength division multiplexer/demultiplexers and
Two single mode optical fibers complete the wavelength-division multiplex system of N channel to biography；
Fig. 2 is the topological diagram of existing single fiber bi-directional transmission wavelength-division multiplex system；
Fig. 3 is the topological diagram of single fiber bi-directional transmission coarse wavelength division multiplexing systems in accordance with a preferred embodiment of the present invention；
Fig. 4 a is a kind of working principle diagram of the simplex optical module receiving end of co-wavelength transmitting-receiving according to the present invention；
Fig. 4 b is a kind of working principle diagram of the simplex optical module transmitting terminal of co-wavelength transmitting-receiving according to the present invention；
Fig. 5 is the simplex optical module working principle of co-wavelength transmitting-receiving in accordance with another embodiment of the present invention；
Fig. 6 is the topological diagram that single fiber bi-directional according to the preferred embodiment of the invention transmits highly dense-coarse wavelength division multiplexing systems；
Fig. 7 is used in having with PCB circuit board for the coaxial packaging transmitting terminal of optical module in highly dense-coarse wavelength division multiplexing systems
Effect connection pin definitions figure；
Fig. 8 is the topological diagram of single fiber bi-directional transmission dense wavelength division multiplexing system according to the preferred embodiment of the invention.
Specific embodiment
For a better understanding and interpretation of the present invention, below in conjunction with attached drawing, the present invention is described in further detail.
Fig. 2 is the topological diagram of single fiber bi-directional transmission wavelength-division multiplex system in the prior art (n is even number), it is only necessary to one group of wave
Point multiplexing demultiplexing device and a Single mode communication optical fiber complete wavelength-division multiplex system to biography, but each channel must use
Two wavelength fit transmission, such as a channel use λ1And λ2It is received and dispatched, for example the channel N/2 uses λn/2-1And λn/2It is received
Hair, therefore port number is only N/2.
Fig. 3 shows applied topology figure of the embodiment of the present invention in coarse wavelength division multiplexing systems.Coarse wavelength division multiplexing systems one
As refer to wave-length coverage from 1260nm to 1620nm section, be divided into the wavelength-division multiplex system of 20nm, highest available channel number
It is 18.1570,1590,1610nm specifically, channel is respectively 1270,1290,1310 by 1 to 18 ....In this reality
It applies in the Wave division multiplexing optical transmission system of example, including a pair of of Wavelength division multiplexer/demultiplexer 201 and 202, in the first wavelength-division multiplex
It is connected between device/demultiplexer 201 and second this both ends of Wavelength-division multiplexer/demultiplexer 202 with telecommunication optical fiber 300, preferably,
Telecommunication optical fiber 300 is single mode optical fiber.Illustratively, the operation wavelength in described Wave division multiplexing optical transmission system one end is 1270nm
Simplex optical module 1011 connected by single mode optical fiber 301 and the first Wavelength-division multiplexer/demultiplexer 201；In the wave
The opposite simplex optical module 1021 that should have another operation wavelength for 1270nm for dividing the Multiplex optical transmission system other end, leads to
Cross single mode optical fiber 302 and the connection of the second Wavelength-division multiplexer/demultiplexer 202.
The central wavelength being emitted from 1011 transmitting terminal of simplex optical module is that the optical signal of 1270nm passes through single mode optical fiber
301 are sent to 201 corresponding 1270nm wavelength port of the first Wavelength-division multiplexer/demultiplexer, through the first wavelength division multiplexer/demultiplex
After wavelength-division multiplex/demultiplexing of device 201, pass through telecommunication optical fiber from the public port of the first Wavelength-division multiplexer/demultiplexer 201
300 are connected to the public port of the second Wavelength-division multiplexer/demultiplexer 202, and the public port is preferably com port.It reaches
The optical signal of the 1270nm of the public port of second Wavelength-division multiplexer/demultiplexer 202 passes through the second wavelength division multiplexer/demultiplexing
After wavelength-division multiplex/demultiplexing of device 202, pass through single mode from the 1270nm wavelength port of the second Wavelength-division multiplexer/demultiplexer 202
The transmission of optical fiber 302, which is reached, matches the receiving end of the simplex optical module 1021 used by single-fiber bidirectional optical with optical module 1011
The optical signal of the reception of module 1021 1270nm.
In this optical transmission system, the communications contrary with above-mentioned optical signal transmission are realized on Same Wavelength,
Specifically, being the optical signal of 1270nm to second in the central wavelength that 1021 transmitting terminal of other end simplex optical module issues
The 1270nm wavelength port of Wavelength-division multiplexer/demultiplexer 202, it is multiple by the wavelength-division of the second Wavelength-division multiplexer/demultiplexer 202
Enter telecommunication optical fiber 300 from 202 public port with after/demultiplexing, reaches this end first by the transmission of telecommunication optical fiber 300
The public port of Wavelength-division multiplexer/demultiplexer 201, and wavelength-division multiplex/solution through the first Wavelength-division multiplexer/demultiplexer 201
Through reaching the receiving end of simplex optical module 1011 by single mode optical fiber 301 after multiplexing.In this way, in one embodiment of the invention
In Wave division multiplexing optical transmission system, operation wavelength is all that a pair of of simplex optical module 1011 and 1021 of 1270nm matches work
Make, only just completes two-way communication with the optical channel of a 1270nm central wavelength.
Further, other wavelength in the same applicable system of this working principle.In coarse wavelength division multiplexing optical transport system
One end (being defined as left end) of system, operating central wavelength is respectively 1270,1290,1310 ... the 18 of 1570,1590,1610nm
A simplex optical module 101 passes through the 1270,1290 of optical fiber 301 and coarse wavelength division multiplexing/demultiplexer 201 respectively,
1310 ... 1570,1590,1610nm ports connect one to one respectively, one group of optical signals coarse wavelength division multiplexing of synthesis/demultiplex
Single mode communication optical fiber 300 is inputted with the public port of device 201；In the other end (being defined as right end) of system, this group of optical signal quilt
Coarse wavelength division multiplexing/demultiplexer 202 of right end receives in its public port and is decomposed into 1270,1290,1310 again ...
1570,1590,1610nm this 18 wave bands are exported by the corresponding port of coarse wavelength division multiplexing/demultiplexer 202, optical signal respectively
It is received by 18 simplex optical modules 102 that optical fiber 302 is matched by right end, completes an optic communication task；Above-mentioned thick
In Wave division multiplexing optical transmission system, following Fig. 4 a, shown in Fig. 4 b and Fig. 5, a pair of of simplex optical module 101n of pairing work
Work is completed jointly with 102n in the transmitting-receiving of the optical signal of same central wavelength, in a preferred embodiment, operation wavelength is all
For the pairing work of a pair of of simplex optical module 1011 and 1021 of 1270nm, only with the optical channel of a 1270nm central wavelength
The two-way communication just completed；So likewise, the signal that this group of optical module of right end 102 emits is answered also by the thick wavelength-division of right end
One group of optical signal is synthesized with/demultiplexer 202 and enters Single mode communication optical fiber 300, by coarse wavelength division multiplexing/demultiplexer of left end
18 simplex optical modules 101 for entering left end after 201 decomposition receive, to complete two-way communication task.
Fig. 4 a and Fig. 4 b respectively illustrate the transmitting for realizing the transmitting-receiving simplex optical module of the co-wavelength in above-described embodiment
The presently preferred embodiments of the present invention at end and receiving end.As shown in fig. 4 a, the transmitting terminal optical path of simplex optical module includes light
Fine wire jumper socket, optical transmitting set and faraday rotator etc.；Preferably, it is successively put between optical patchcord socket and optical transmitting set
A collimation lens 01, a polarized light splitting device 10,45 degree of faraday rotators 30 and a reflective polarizing are set
Optical splitter 40；The linearly polarized photon launched from optical transmitting set enters 45 degree of Faraday rotations via reflective polarizing optical splitter 40
Piece 30, linear polarization become p-polarization light by 45 degree of rotation, completely by the first polarizing beam splitter 10, are collimated 01 coupling of lens
It closes into optical patchcord socket.Illustratively, optical patchcord socket is LC or SC.In the preferred embodiment, light emitting
Device is using semiconductor laser, it is preferable that the operating wavelength range of semiconductor laser is the section 1260nm to 1620nm.
Fig. 4 b shows the working principle diagram of this co-wavelength transmitting-receiving simplex optical module receiving end optical path.Optical patchcord
Socket input optical signal is converged to collimated light by collimation lens 01, and it is mutual to be separated into polarization direction after the first polarizing beam splitter 10
Perpendicular the first polarized component (p light) and the second polarized component (s light), the second polarized component is reflected, and reception is directly entered
End；First polarized component then enters 45 degree of Faraday rotation pieces 30, is reflected by the second polarizing beam splitter 40, again passes by 45
Degree Faraday rotation piece 30 reenters the first polarizing beam splitter 10, and 90 degree of deflections occur for the first polarized component polarization direction at this time
(s light) after being reflected into quarter wave plate 20, is reflected by reflector 21, after again passing by quarter wave plate 200, the first polarization point
90 degree of deflections (p light) occur once again for amount polarization direction, transmitted through the first polarizing beam splitter 10 after also into receiving end.In this way, institute
Some input signal lights all receiving ends receive, and complete co-wavelength single fiber bi-directional transmission-receiving function.
Fig. 5 is the working principle diagram of co-wavelength transmitting-receiving simplex optical module in another alternative embodiment of the invention.Such as
Shown in Fig. 5, the simplex optical module includes optical patchcord socket, light emitting end and optical receiving end, in optical patchcord socket
Be provided with a half-reflection and half-transmission slide 11 between light emitting end, the optical path Center axis of slide and light emitting end at 45 degree of angles,
Optical path Center axis with optical receiving end is also at 45 degree of angles.The laser signal that light emitting end issues passes through slide, after loss 50%
Into optical patchcord socket；Signal light into optical patchcord socket is then reflected into receiving end by slide 50%, completes same wave
Long single fiber bi-directional transmission-receiving function.It will be understood by those skilled in the art that the light transmission of half-reflection and half-transmission slide is not necessarily
It is complete 50%, is also possible to other light transmissions of close 50%, such as 45% to 55%.
Fig. 6 then illustrates the further system design drawing of thick wavelength-division system.If 18 channels shown in Fig. 3 again into one
Step expands to 36 channels, and the central wavelength in the 1 to 36th channel is respectively 1265,1275,1285 ... 1595,1605,
1615nm, to be designed to that wavelength interval is highly dense-coarse wavelength division multiplexing systems of 10nm.Using wavelength division multiplexed light shown in fig. 6
Transmission system, the simplex optical module of present pre-ferred embodiments can complete intimate condensation wave point in such thick wavelength-division system
System (DWDM) could traffic carried task.DWDM technology generally utilizes the bandwidth and low-loss characteristic of single mode optical fiber,
Using multiple wavelength as carrier wave, allow each carrier channel simultaneous transmission in optical fiber, the smallest passage number one of condensation wave subsystem
As be 40, and use present pre-ferred embodiments simplex optical module only pass through a Communication ray in optical transmission system
Fibre 300 can reach the port number of intimate condensation wave subsystem, although it will be understood by those skilled in the art that in this hair
The telecommunication optical fiber 300 of a pair of of Wavelength division multiplexer/demultiplexer 201 and 201 is preferably in connection system in bright aforementioned preferred embodiment
Using single mode optical fiber, telecommunication optical fiber 300 can also alternatively use multimode fibre.Further, since this simplex optical module
Without temperature control system, far below the temperature control optical module used in dwdm system, this design can be with for the cost of module
Greatly reduce the overall cost of optical transmission system.
Fig. 7 show highly dense-coarse wavelength division multiplexing systems used in present pre-ferred embodiments optical module same axle envelope
Dress transmitting terminal effectively connects pin definitions figure with PCB circuit board.In general, the hair in optical module used in this scene
End is penetrated without temperature control system, effective connection pin of it and rear end PCB circuit board only needs 4, and respectively laser powers on
Foot (positive perhaps cathode) 701 lasers power on foot (cathode or anode) 702, back facet current pin 703 and grounding leg 704.
The effect that laser powers on foot (anode and cathode) is to the laser of the simplex optical module light emitting end of the embodiment of the present invention
Device adds operating current, the size of back facet current when the effect of back facet current pin is monitoring laser work.Described in the present embodiment
Optical module in transmitting terminal can be the transmitting terminal of simplex optical module as shown in Figure 4, be also possible to not depart from this hair
Other equivalent optical modules of bright design design, meanwhile, the PCB circuit board of the present embodiment effectively connects pin and can equally be applicable in
Coarse wavelength division multiplexing systems in Fig. 3.
Fig. 8 illustrates the present invention in the topological diagram of condensation wave subsystem DWDM.Dense wavelength division multiplexing system generally has 40 to 96
Channel, wavelength interval are respectively 0.8nm or 0.4nm.By taking 40 channels as an example, central wavelength is respectively 1529.16,
40 simplex optical modules of 1529.55 ... 1560.22,1560.61nm pass through respectively optical fiber and left end dense wavelength division multiplexing/
Each port of demultiplexer connects one to one respectively, and one group of optical signals dense wavelength division multiplexing/demultiplexer com port of synthesis is defeated
Enter long-distance optical fiber；In the right end of system, this group of optical signal is decomposed again by dense wavelength division multiplexing/demultiplexer of right end, respectively
It is exported by dense wavelength division multiplexing/demultiplexer corresponding port, optical signal is received by 40 simplex optical modules of right end, is completed
Optic communication task；Likewise, dense wavelength division multiplexing/demultiplexer of the signal of this group of optical module of right end transmitting also by right end
It synthesizes one group and enters optical fiber, 40 single fiber bi-directional optical modes of left end are entered after being decomposed by the dense wavelength division multiplexing of left end/demultiplexer
Block receives, and completes two-way communication task.
The above, only preferred embodiment are not intended to limit the scope of the present invention, all according to the present invention
Equivalent change or modification made by claim is all that the present invention is covered.
Claims (10)
1. a kind of Wave division multiplexing optical transmission system of simplex optical module composition, including two groups of simplex optical modules, a pair of
Wavelength division multiplexer/demultiplexer (201 and 202) and first Wavelength-division multiplexer/demultiplexer of connection (201) and the second wavelength-division
The telecommunication optical fiber (300) of multiplexer/demultiplexer (202), it is characterised in that: two groups of simplex optical modules are n to same
The simplex optical module of wavelength, operation wavelength are respectively λ1, λ2......λnTwo groups of simplex optical modules (101n and
102n) it is connected to respectively by the first Wavelength-division multiplexer/demultiplexer (201) and the second Wavelength-division multiplexer/demultiplexer (202)
Telecommunication optical fiber (300), wherein n >=2.
2. the Wave division multiplexing optical transmission system of simplex optical module composition as described in claim 1, it is characterised in that: in institute
The n simplex optical module (101n) of system one end is stated, n-th of optical module operation wavelength is λn, n-th of optical module
(101n) is connected by single mode optical fiber (301) and the first Wavelength-division multiplexer/demultiplexer (201)；In the system other end
Corresponding another n simplex optical module (102n), the operation wavelength of n-th of optical module are λn, n-th of optical module
(102n) is connected by single mode optical fiber (302) and the second Wavelength-division multiplexer/demultiplexer (202), wherein n >=2.
3. the Wave division multiplexing optical transmission system of simplex optical module composition as claimed in claim 2, it is characterised in that: described
The n simplex optical module (101n) of system one end is all connected to the corresponding operating wave of the first Wavelength-division multiplexer/demultiplexer
Long port, operation wavelength λnOptical module connect the first Wavelength-division multiplexer/demultiplexer λnWavelength port；First wavelength-division is multiple
The second wavelength division multiplexer/demultiplexing is connected to by a telecommunication optical fiber (300) with the public port of device/demultiplexer (201)
The single fiber of the n co-wavelength transmission of the public port of device (202), the second Wavelength-division multiplexer/demultiplexer 202 and the system other end
Bidirectional optical module (102) is connected by n root single mode optical fiber (302).
4. the Wave division multiplexing optical transmission system of simplex optical module composition as claimed any one in claims 1 to 3, special
Sign is: the simplex optical module includes optical patchcord socket (T1), optical receiving end (T2) and light emitting end (T3), described
Optical receiving end (T2) and light emitting end (T3) work in Same Wavelength, and in the optical receiving end (T2), light emitting end (T3)
Three-dimensional optical device is placed between optical patchcord socket (T1).
5. the Wave division multiplexing optical transmission system of the simplex optical module composition as claimed in claim 4, feature exist
In: the three-dimensional optical device is half-reflection and half-transmission eyeglass or miniature toroidal device.
6. the Wave division multiplexing optical transmission system that simplex optical module as claimed in claim 5 forms, it is characterised in that: institute
The public port for stating Wavelength division multiplexer/demultiplexer (201 and 202) is com port, and only a port.
7. the Wave division multiplexing optical transmission system of simplex optical module composition as claimed in claim 6, it is characterised in that: described
Simplex optical module one end is equipped with PCB circuit board, the light emitting end of the simplex optical module and the PCB circuit board
Effectively connection number of pins is 4.
8. the Wave division multiplexing optical transmission system that the simplex optical module as described in any one of claim 5 to 7 forms, special
Sign is: the wavelength-division multiplex is wavelength interval in 0.4nm to the communication band between 20nm.
9. the Wave division multiplexing optical transmission system of simplex optical module composition as claimed in claim 8, it is characterised in that: described
Wavelength-division multiplex is communication band of the wavelength interval in 10nm.
10. the Wave division multiplexing optical transmission system that the simplex optical module as described in claim 7 or 9 forms, it is characterised in that:
The number of channel of the Wave division multiplexing optical transmission system is 20-36.
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| CN111314014A (en) * | 2020-02-27 | 2020-06-19 | 武汉兴思为光电科技有限公司 | MWDM optical communication network and optical communication system |
| CN112769519A (en) * | 2019-11-04 | 2021-05-07 | 中国电信股份有限公司 | Optical signal communication system |
| CN113466996A (en) * | 2020-03-31 | 2021-10-01 | 高雄科技大学 | Composite multi-fiber multi-wavelength high-capacity optical transmission module |
| CN113746551A (en) * | 2020-05-28 | 2021-12-03 | 中国电信股份有限公司 | Forward transmission system based on wavelength division multiplexing |
| CN114389696A (en) * | 2020-10-22 | 2022-04-22 | 华为技术有限公司 | Optical module, optical fiber interface connector, optical signal transmission method and system |
| CN115347974A (en) * | 2021-05-12 | 2022-11-15 | 希烽光电科技(南京)有限公司 | Multi-wavelength single-fiber bidirectional 400G long-distance optical communication system |
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