CN108055083B - A kind of Transmission system of double polarizing light signal - Google Patents
A kind of Transmission system of double polarizing light signal Download PDFInfo
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- CN108055083B CN108055083B CN201711409244.5A CN201711409244A CN108055083B CN 108055083 B CN108055083 B CN 108055083B CN 201711409244 A CN201711409244 A CN 201711409244A CN 108055083 B CN108055083 B CN 108055083B
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- optical signal
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- polarizing light
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/40—Transceivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/61—Coherent receivers
- H04B10/614—Coherent receivers comprising one or more polarization beam splitters, e.g. polarization multiplexed [PolMux] X-PSK coherent receivers, polarization diversity heterodyne coherent receivers
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
The present invention is suitable for optical signal transmission field, provide a kind of Transmission system of double polarizing light signal, the Transmission system includes: sequentially connected double polarizing light sender unit, transmission link and double polarizing light signal receiving device, double polarizing light sender unit generates the multipath light signal for carrying dual-polarization transmission information, and transmission link is sent by the optical signal, transmission link sends double polarizing light signal receiving device for the optical signal by multi-core optical fiber, double polarizing light signal receiving device carries out demodulation to the optical signal and obtains the dual-polarization transmission information.The embodiment of the present invention, the double polarizing light signal receiving device of receiving end does not need local laser, does not need integrated coherent receiver, the reception cost of double polarizing light signal is greatly reduced, simultaneously because not needing local laser, there is no frequency deviation compensation, reduce the demodulated complex degree of system.
Description
Technical field
The invention belongs to optical signal transmission field more particularly to a kind of Transmission systems of double polarizing light signal.
Background technique
With internet and the continuous rise of various cloud services, all kinds of emerging services, such as HD video, virtual reality skill
Art etc., signal transmission rapidly increase the transmission capacity and transmission performance demand of traditional network.Backbone network uses at this stage
Optical transmission system be concerned with since the modes such as palarization multiplexing can be taken to improve transmission capacity, reception is improved by the relevant technology that receives
Sensitivity and be widely applied, but its transmission cost is relatively high.On the other hand, a large amount of accesses requirement of all kinds of mobile terminals
The cost of network further decreases.Conventionally employed direct modulation Direct Inspection Technology, since required photoelectric device is more simple
Singly cost is relatively low is widely applied.But due to direct detection system can not receive dual-polarization signal make its transmission capacity by
Limitation.
Summary of the invention
The Transmission system for being designed to provide a kind of double polarizing light signal of the embodiment of the present invention, to solve existing optical transport
The higher problem of equipment cost.
The embodiments of the present invention are implemented as follows, a kind of Transmission system of double polarizing light signal, and the Transmission system includes:
Sequentially connected double polarizing light sender unit, transmission link and double polarizing light signal receiving device, it is double inclined
Vibration optical signal transmitter generates the multipath light signal for carrying dual-polarization transmission information, and sends transmission for the optical signal
Link, transmission link send double polarizing light signal receiving device, double polarizing light signal for the optical signal by multi-core optical fiber
Reception device carries out demodulation to the optical signal and obtains the dual-polarization transmission information.
The embodiment of the present invention, the double polarizing light signal receiving device of receiving end do not need local laser, do not need to integrate
Coherent receiver, the reception cost for greatly reducing double polarizing light signal are not present simultaneously because not needing local laser
Frequency deviation compensation, reduces the demodulated complex degree of system.
Detailed description of the invention
Fig. 1 is a kind of structure chart of the Transmission system of double polarizing light signal shown in an exemplary embodiment of the invention；
Fig. 2 show the structural schematic diagram of the Transmission system of the double polarizing light signal shown in the present invention；
Fig. 3 show the structural schematic diagram of the sending device of the double polarizing light signal shown in the present invention；
Fig. 4 show the structural schematic diagram of the reception device of the double polarizing light signal shown in the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In order to illustrate technical solutions according to the invention, the following is a description of specific embodiments.
It is as shown in Figure 1 a kind of structure of the Transmission system of double polarizing light signal shown in an exemplary embodiment of the invention
Figure, the Transmission system include:
Sequentially connected double polarizing light sender unit 101, transmission link 102 and double polarizing light signal receiving device
103, double polarizing light sender unit generates the multipath light signal for carrying dual-polarization transmission information, and the optical signal is sent out
It is sent to transmission link, transmission link sends double polarizing light signal receiving device for the optical signal by multi-core optical fiber, double inclined
Vibration light signal receiving carries out demodulation to the optical signal and obtains the dual-polarization transmission information.
In embodiments of the present invention, double polarizing light signal transmission system includes: that sequentially connected double polarizing light signal is sent
Device, transmission link and double polarizing light signal receiving device.In specific transmission process, double polarizing light sender unit
The multipath light signal for carrying dual-polarization transmission information is generated, and transmits optical signals into transmission link, transmission link passes through more
Core fibre transmits optical signals into double polarizing light signal receiving device, and double polarizing light signal receiving device demodulates optical signal
Obtain the dual-polarization transmission information.It should be pointed out that above-mentioned multipath light signal can according to the needs of actual use into
Row setting, the present invention is without limiting.Preferably, the multipath light signal for carrying dual-polarization transmission information is the carrying of 6 tunnels
There is the optical signal of dual-polarization transmission information.
Wherein, the double polarizing light sender unit, comprising:
Light source, the first beam splitter, double polarizing light signal generation unit, the second beam splitter, polarization beam apparatus, dual-polarization
90 ° of frequency mixers, first beam splitter connect with 90 ° of light source, double polarizing light signal generation unit, dual-polarization frequency mixers respectively
It connects, second beam splitter is connect with 90 ° of double polarizing light signal generation unit, polarization beam apparatus, dual-polarization frequency mixers respectively.
In embodiments of the present invention, the light carrier of light source output is divided into two-way light carrier by the first beam splitter, this two
Road light carrier is respectively fed to 90 ° of frequency mixers of double polarizing light signal generation unit and dual-polarization, and double polarizing light signal generation unit is defeated
Dual-polarization modulated optical signal is divided into two ways of optical signals by the second beam splitter out, which is respectively fed to polarization beam splitting
90 ° of frequency mixers of device and dual-polarization, wherein dual-polarization modulated optical signal includes X polarization and Y polarization.Polarization beam apparatus output first
Input optical signal and the second input optical signal, wherein the first input optical signal includes X polarisation transfer information, the second input light letter
Number include Y polarisation transfer information.Dual-polarization 90 ° of frequency mixer output third input optical signals, the 4th input optical signal, the 5th inputs
Optical signal and the 6th input optical signal, wherein third input optical signal includes that X polarisation transfer information and X polarize light carrier, and the 4th
Input optical signal includes X polarisation transfer information and X polarizes light carrier, and the light carrier and the 4th that third input optical signal includes
The light carrier that input optical signal includes has 90 ° of phase differences, and the 5th input optical signal includes Y polarisation transfer information and Y polarised light
Carrier wave, the 6th input optical signal includes Y polarisation transfer information and Y polarizes light carrier, and the light that the 5th input optical signal includes
The light carrier that carrier wave and the 6th input optical signal include has 90 ° of phase differences.
Wherein, the double polarizing light signal receiving device includes:
First beam splitter, the second beam splitter, the first smooth adjustable unit, the second smooth adjustable unit, third light can
Adjust unit, the 4th smooth adjustable unit, the first balanced detector, the second balanced detector, third balanced detector, Siping City
Weigh detector, the first analog-digital converter, the second analog-digital converter, third analog-digital converter, the 4th analog-digital converter, dual-polarization electricity
Signal demodulation unit.
In embodiments of the present invention, the first output optical signal is respectively fed to first after the first beam splitter is divided into two-way
Light adjustable unit and the second smooth adjustable unit, the second output optical signal are sent respectively after the second beam splitter is divided into two-way
Entering third light adjustable unit and the 4th smooth adjustable unit, third output optical signal is sent into the first smooth adjustable unit, and the 4th
Output optical signal is sent into the second smooth adjustable unit, and the 5th output optical signal is sent into third light adjustable unit, the 6th output light
Signal is sent into the 4th smooth adjustable unit.First smooth adjustable unit output signal is sent into the first balanced detector, passes through first
Output signal gain having the same and delay after light adjustable unit is adjusted, the second smooth adjustable unit output signal are sent into the
Two balanced detectors, output signal gain having the same and delay after being adjusted by the second smooth adjustable unit, third light can
It adjusts element output signal and is sent into third balanced detector, output signal has identical after being adjusted by third light adjustable unit
Gain and delay, the 4th smooth adjustable unit output signal is sent into the 4th balanced detector, passes through the 4th smooth adjustable unit
Output signal gain having the same and delay after adjusting, the first balanced detector export electric signal and are sent into the first analog-to-digital conversion
Device, output electric signal include the real part of X polarisation transfer information, and the second balanced detector exports electric signal and is sent into the second mould
Number converter, output electric signal include the imaginary part of X polarisation transfer information, and third balanced detector exports electric signal and is sent into
Third analog-digital converter, output electric signal include the real part of Y polarisation transfer information, and the 4th balanced detector exports telecommunications
Number be sent into the 4th analog-digital converter, output electric signal include Y polarisation transfer information imaginary part, the first analog-digital converter~
The output digit signals of 4th analog-digital converter are sent into dual-polarization electric signal demodulating unit simultaneously, and demodulation obtains dual-polarization transmission letter
Breath.
Wherein, the transmission link includes:
Sequentially connected first fan-in/fanout apparatus, six core transmission fibers, the second fan-in/fanout apparatus, first fan
Enter/fanout apparatus 6 road input optical signals of reception, is sent 6 road input optical signal to by the transmission of six core transmission fibers
6 road input optical signal is converted to 6 tunnel output optical signals by the second fan-in/fanout apparatus, the second fan-in/fanout apparatus, and
6 tunnel output optical signal is sent.
In embodiments of the present invention, the first input optical signal and the first output optical signal be same core input optical signal and
Output optical signal, the second input optical signal and the second output optical signal are the input optical signal and output optical signal of same core, the
Three input optical signals and third output optical signal are the input optical signal and output optical signal of same core, the 4th input optical signal and
4th output optical signal is the input optical signal and output optical signal of same core, the 5th input optical signal and the 5th output optical signal
It is the input optical signal and output optical signal of same core, the 6th input optical signal and the first output optical signal are the inputs with six cores
Optical signal and output optical signal.
Those of ordinary skill in the art will appreciate that only being patrolled according to function for each unit included by above-described embodiment
It volume is divided, but is not limited to the above division, as long as corresponding functions can be realized；In addition, each function list
The specific name of member is also only for convenience of distinguishing each other, the protection scope being not intended to restrict the invention.
Those of ordinary skill in the art be further appreciated that implement the method for the above embodiments be can
It is completed with instructing relevant hardware by program, the program can be stored in a computer-readable storage medium
In, described storage medium, including ROM/RAM, disk, CD etc..
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (7)
1. a kind of Transmission system of double polarizing light signal, which is characterized in that the Transmission system includes:
Sequentially connected double polarizing light sender unit, transmission link and double polarizing light signal receiving device, double polarizing light
Sender unit generates the multipath light signal for carrying dual-polarization transmission information, and sends chain for the optical signal
Road, transmission link send double polarizing light signal receiving device for the optical signal by multi-core optical fiber, and double polarizing light signal connects
Receiving apparatus carries out demodulation to the optical signal and obtains the dual-polarization transmission information；
The double polarizing light sender unit, comprising: light source, the first beam splitter, double polarizing light signal generation unit, second
90 ° of beam splitter, polarization beam apparatus, dual-polarization frequency mixers, first beam splitter are raw with light source, double polarizing light signal respectively
At 90 ° of unit, dual-polarization frequency mixer connections, second beam splitter divides with double polarizing light signal generation unit, polarization respectively
90 ° of beam device, dual-polarization frequency mixer connections；
The double polarizing light signal receiving device include: the first beam splitter, the second beam splitter, the first smooth adjustable unit,
Second smooth adjustable unit, third light adjustable unit, the 4th smooth adjustable unit, the first balanced detector, the second balance are visited
Survey device, third balanced detector, the 4th balanced detector, the first analog-digital converter, the second analog-digital converter, third analog-to-digital conversion
Device, the 4th analog-digital converter, dual-polarization electric signal demodulating unit, wherein first via output optical signal enters the first beam splitter,
The output of its two-way is separately connected the first smooth adjustable unit and the second smooth adjustable unit, and the second tunnel output optical signal enters second
Beam splitter, two-way output are separately connected third light adjustable unit and the 4th smooth adjustable unit, third output optical signal
Into the first smooth adjustable unit, the 4th output optical signal enters the second smooth adjustable unit, and the 5th output optical signal enters the
Three smooth adjustable units, the 6th output optical signal enter the 4th smooth adjustable unit；
First balanced detector exports electric signal and is sent into the first analog-digital converter, and output electric signal includes X polarisation transfer information
Real part, the second balanced detector export electric signal be sent into the second analog-digital converter, output electric signal include X polarization pass
The imaginary part of defeated information, third balanced detector export electric signal and are sent into third analog-digital converter, and output electric signal includes Y
The real part of polarisation transfer information, the 4th balanced detector export electric signal and are sent into the 4th analog-digital converter, export telecommunications
Number include Y polarisation transfer information imaginary part.
2. Transmission system as described in claim 1, which is characterized in that the multichannel light letter for carrying dual-polarization transmission information
Number for 6 tunnels carry dual-polarization transmit information optical signal.
3. Transmission system as described in claim 1, which is characterized in that the double polarizing light system generation unit generates double inclined
Vibration modulated optical signal includes X polarization and Y polarization.
4. Transmission system as claimed in claim 3, which is characterized in that the first input optical signal of the polarization beam apparatus output
It include Y polarisation transfer information comprising X polarisation transfer information, the second input optical signal, the of the dual-polarization 90 ° of frequency mixers output
Three input optical signals include X polarisation transfer information and X polarization light carrier, the 4th input optical signal include X polarisation transfer information and X
It polarizes light carrier, the 5th input optical signal and polarizes light carrier comprising Y polarisation transfer information and Y, the 6th input optical signal includes Y inclined
Vibration transmission information and Y polarize light carrier.
5. Transmission system as claimed in claim 4, which is characterized in that the light carrier and that the third input optical signal includes
The light carrier that four input optical signals include has 90 ° of phase differences, the light carrier and the 6th input light that the 5th input optical signal includes
The light carrier that signal includes has 90 ° of phase differences.
6. Transmission system as described in claim 1, which is characterized in that first analog-digital converter~the 4th analog-digital converter
Output digit signals be sent into dual-polarization electric signal demodulating unit simultaneously, demodulation obtains dual-polarization and transmits information.
7. Transmission system as claimed in claim 2, which is characterized in that the transmission link includes:
Sequentially connected first fan-in/fanout apparatus, six core transmission fibers, the second fan-in/fanout apparatus, first fan-in/
Fanout apparatus receives 6 road input optical signals, sends second for 6 road input optical signal by the transmission of six core transmission fibers
6 road input optical signal is converted to 6 tunnel output optical signals by fan-in/fanout apparatus, the second fan-in/fanout apparatus, and by institute
6 tunnel output optical signals are stated to send.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711409244.5A CN108055083B (en) | 2017-12-22 | 2017-12-22 | A kind of Transmission system of double polarizing light signal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711409244.5A CN108055083B (en) | 2017-12-22 | 2017-12-22 | A kind of Transmission system of double polarizing light signal |
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| CN108055083A CN108055083A (en) | 2018-05-18 |
| CN108055083B true CN108055083B (en) | 2019-08-20 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101729187A (en) * | 2008-10-24 | 2010-06-09 | 华为技术有限公司 | Optical signal transmission processing method, sending device and system |
| CN106850066A (en) * | 2017-01-24 | 2017-06-13 | 西安电子科技大学 | The device and method of Doppler shift measurement is realized based on dual-polarization modulator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8634723B2 (en) * | 2009-12-17 | 2014-01-21 | Celight | Optical communications with polarization dependent loss compensation |
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- 2017-12-22 CN CN201711409244.5A patent/CN108055083B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101729187A (en) * | 2008-10-24 | 2010-06-09 | 华为技术有限公司 | Optical signal transmission processing method, sending device and system |
| CN106850066A (en) * | 2017-01-24 | 2017-06-13 | 西安电子科技大学 | The device and method of Doppler shift measurement is realized based on dual-polarization modulator |
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| CN108055083A (en) | 2018-05-18 |
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