CN107248897A - A kind of optical fiber multiplexing system sensed for fiber optic communication with optical fiber polarisation - Google Patents
A kind of optical fiber multiplexing system sensed for fiber optic communication with optical fiber polarisation Download PDFInfo
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- CN107248897A CN107248897A CN201710363758.5A CN201710363758A CN107248897A CN 107248897 A CN107248897 A CN 107248897A CN 201710363758 A CN201710363758 A CN 201710363758A CN 107248897 A CN107248897 A CN 107248897A
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 87
- 238000004891 communication Methods 0.000 title claims abstract description 72
- 239000000835 fiber Substances 0.000 title claims abstract description 45
- 230000003287 optical effect Effects 0.000 claims abstract description 153
- 230000010287 polarization Effects 0.000 claims abstract description 89
- 230000003321 amplification Effects 0.000 claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 24
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 24
- 230000002463 transducing effect Effects 0.000 claims abstract description 19
- 238000012544 monitoring process Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 2
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35383—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using multiple sensor devices using multiplexing techniques
- G01D5/35387—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using multiple sensor devices using multiplexing techniques using wavelength division multiplexing
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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
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
- H04B10/54—Intensity modulation
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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
- H04B10/50—Transmitters
- H04B10/564—Power control
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Abstract
The invention discloses the optical fiber multiplexing system sensed for fiber optic communication and optical fiber polarisation, including first, two communication optical modules, first, two smooth multiplexer/demultiplexers, intensity modulation module, sense DC light source, first, two optical splitters, sense light intensity monitor module, polarization state analyzer, sense light spy group, transducing signal filter and amplification group and polarization state sensing detection module, first, two smooth multiplexer/demultiplexers are connected, intensity modulation module connects the first optical splitter and sensing DC light source, sense DC light source and connect the first optical splitter, first optical splitter connects the first smooth multiplexer/demultiplexer, second smooth multiplexer/demultiplexer connects the second optical splitter, second optical splitter connects sense light intensity monitor module and polarization state analyzer, polarization state analyzer and the connection of sensor light spy group, sensor light spy group, transducing signal filter and amplification group and polarization state sensing detection module are connected with circuit successively.Present system can realize optical fiber communication function and optical fiber polarisation sensing function simultaneously in telecommunication optical fiber.
Description
Technical field
The invention belongs to sensory field of optic fibre, more particularly, to a kind of for fiber optic communication and optical fiber polarisation sensing
Optical fiber multiplexing system.
Background technology
Light wave is a kind of shear wave, with polarization characteristic.The polarization state of optical fiber inner light beam deformation, vibration, temperature to external world
It is more sensitive Deng change.By the change of detection fiber inner light beam polarization state, the external worlds such as deformation, vibration, temperature can be determined
The change of environment.
The polarization sense of optical fiber can be not only used for the intrusion detection in all types of safety precaution regions, it is also possible to communication
The detection of optical cable, the Polarization-Sensitive amount of power cable.But, communications optical cable is very valuable with fiber resource in power cable.
Need to borrow sensing applications fibre core in networking in optical fiber polarisation sensor-based system to realize the sensing number of sensing node in sensing network
According to transmission to collect, this needs to take valuable fiber resource.It is saved if not being separately provided the optical fiber of sensing applications
Optical fiber leaves unused fibre core can be for the more communication tasks of carrying.
The Chinese patent application of Application No. 201310455498.6《With communication and sensing function fiber unit and its
Manufacture method》Middle proposition is " fiber unit ", and the unit includes " a tightly packaged fiber sensing unit and commutation in center
Some communication precoated fibers for being stranded on tightly packaged fiber sensing unit and outside the fiber unit protection pipe of pine set ".This
Kind of fiber unit is substantially the optical cable being made up of many different types of optical fiber, including the optical fiber with communication function and is had
The optical fiber of sensing function, so as to realize optical fiber cable while having communication and sensing function.
Application No. 201510816255.X Chinese patent application discloses a kind of optical fiber grating sensing and fiber optic communication
Integral system, it can realize communication and detection integral application on a fiber optic network, and it is needed in telecommunication optical fiber link
Upper laying grating sensor, insertion loss can be caused on the communication link by laying grating sensor.
The Chinese patent application of Application No. 200580042657.3 is disclosed《Reflective optical system, optical multiplexer/demultiplexer and light
System》, where it is proposed " performance of optical wavelength multiplex communication can be improved while the tightness of optical filter is relaxed
Reflective optical system, light and channel-splitting filter and photosystem ", but the purpose of the patent application be " improve optical wavelength multiplex lead to
Letter ".It further provides a kind of way of realization of special light multiplexer/demultiplexer.Wavelength division multiplexer (abbreviation WDM) common are
CWDM and two kinds of DWDM, CWDM and the DWDM main distinction are：Between wavelength relative to 0.2nm to 1.2nm in dwdm system
For, CWDM has broader wavelength interval, and the current standard wave length of industry is at intervals of 20nm.The present patent application is substantial
It is a kind of CWDM implementation, it is different from common light multiplexer/demultiplexer.
Existing optical fiber sensing technology is typically all used as sensing in Fibre Optical Sensor, sensing network using independent fibre core resource
The sensing data of node can only borrow other approach to transmit and collect, and the fibre core for sensing is without making general purpose light
Fiber communication.The resource of idle fibre core may be difficult to be fully utilized so in communications optical cable or power cable.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, it is used for fiber optic communication the invention provides one kind and optical fiber is inclined
The optical fiber multiplexing system for sensing of shaking, it is intended that by cleverly setting optical module and element, by multiple light paths cleverly
It is arranged in same photosystem, thus achieves optical fiber communication function and optical fiber polarisation sensing function real in identical optical fiber
Existing, it can improve the utilization ratio of optical fiber.
To achieve the above object, it is used for fiber optic communication and optical fiber polarisation there is provided one kind according to one aspect of the present invention
The optical fiber multiplexing system of sensing, it include first communication optical module, the first smooth multiplexer/demultiplexer, the second smooth multiplexer/demultiplexer, second lead to
Believe optical module, intensity modulation module, sensing DC light source, the first optical splitter, the second optical splitter, sense light intensity monitor module,
Polarization state analyzer, sense light spy group, transducing signal filter and amplification group and polarization state sensing detection module, wherein,
First optical communications module is connected with the first port of the described first smooth multiplexer/demultiplexer, the first smooth division ripple
3rd port of device is connected with the first port of the second smooth multiplexer/demultiplexer, the second port connection institute of the second smooth multiplexer/demultiplexer
The second communication optical module is stated, the input of the intensity modulation module connects the first optical splitter first port, the light intensity
The input of the modulation module output end connection sensing DC light source, the output end connection described the of the sensing DC light source
The second port of one optical splitter, the 3rd port of first optical splitter connects the second port of the first smooth multiplexer/demultiplexer,
3rd port of the second smooth multiplexer/demultiplexer connects the first port of second optical splitter, described second point with telecommunication optical fiber
The second port of light device connects the sense light intensity monitor module, and the 3rd port of second optical splitter connects the polarization
The input of state analyzer, the output end of the polarization state analyzer connects the input of the sense light spy group, the sensing
The output end of device light spy group connects the input of the transducing signal filter and amplification group, the transducing signal filter and amplification group it is defeated
Go out the end connection polarization state sensing detection module.
Further, the first communication optical module is used for the communicating light signal for sending or receiving setting wavelength X 1, institute
Stating intensity modulation module is used to adjust input to the driving current for sensing DC light source according to the light intensity pulse of feedback, with by adjusting
Whole driving current and the purpose for reaching adjustment direct current sense light Output optical power, first optical splitter are used for separation and are incident to oneself
The light intensity pulse of body and the direct current sense light from itself outgoing, the sensing DC light source are used for the direct current for sending setting wavelength X 2
Sense light, setting wavelength X 1 is used for two kinds of different wave length λ 1 with the setting non-overlapping of wavelength X 2, the first smooth multiplexer/demultiplexer
Same light beam is merged into λ 2 light beam, to generate wdm light beam, and wdm light beam is reversely decomposed into different ripples
Long λ 1 and λ 2 two light beams, the second smooth multiplexer/demultiplexer is used to wdm light beam being decomposed into different wave length λ 1 and λ's 2
Two light beams, and two kinds of different wave length λ 1 and λ 2 two light beams are reversely merged into wdm light beam, second light splitting
Device is used to reversely separate from the light intensity pulse of itself outgoing and to sense light intensity monitor module with polarization state analyzer respectively enter
The direct current sense light penetrated, the second communication optical module is used for the communicating light signal for receiving or sending setting wavelength X 1, described
Sense light intensity monitor module is used for the light intensity magnitude for monitoring direct current sense light, and the polarization state analyzer is used to detect that direct current is passed
The intensity of polarization light of photosensitive single setting polarization angle or the intensity of polarization light of multiple setting angles of polarization, the sense light spy group
For detecting and receiving the polarised light of the single or multiple polarization angles from the polarization state analyzer, and converted respectively
For current signal, the transducing signal filter and amplification group is used for the single or multiple polarizations of expression from the sense light spy group
The voltage signal of the polarised light of angle, and the filter and amplification of signal is carried out to it, represent single by shaping to obtain waveform
Or the voltage signal of the polarised light of multiple polarization angles, the polarization state sensing detection module is for the table to the process shaping
Show that the change of the voltage signal of the polarised light of single or multiple polarization angles is tested and analyzed, to realize polarization sense function.
Further, it is described first communication optical module and the first smooth multiplexer/demultiplexer between, the first smooth multiplexer/demultiplexer
Between the described second smooth multiplexer/demultiplexer, the second smooth multiplexer/demultiplexer and the second Communication ray intermodule, the intensity modulation
Between module and first optical splitter, between the sensing DC light source and first optical splitter, first optical splitter and institute
Be connected between first smooth multiplexer/demultiplexer with telecommunication optical fiber, second optical splitter and the sense light intensity monitor intermodule with
Telecommunication optical fiber is connected.
Further, the described first smooth multiplexer/demultiplexer is identical with the structure of the described second smooth multiplexer/demultiplexer.
Further, the described first smooth multiplexer/demultiplexer and the second smooth multiplexer/demultiplexer are symmetrical arranged in photosystem.
Further, the light energy ratio of first optical splitter point to sensing DC light source, which is less than, divides to intensity modulation mould
The light energy ratio of block, the light energy ratio of second optical splitter point to sense light intensity monitor module, which is less than, divides to polarization state
The light energy ratio of analyzer.
Further, the first communication optical module is identical with the structure of the described second communication optical module.
Further, the splitting ratio of first optical splitter is 1:99, the splitting ratio of second optical splitter is 1:9.
Further, between second optical splitter and the polarization state analyzer, the polarization state analyzer is passed with described
It is connected between photosensitive spy group with telecommunication optical fiber, between the sense light spy group and the transducing signal filter and amplification group, the sensing
Signal filtering amplification group is connected with the polarization state sensing detection module with circuit.
Further, first optical splitter is replaced using optical circulator, the optical circulator first port is straight with sensing
Streamer source is connected, the connection of the smooth multiplexer/demultiplexer of optical circulator second port first, the port of optical circulator the 3rd and intensity modulation module
Connection, light is the port of first port → second port → the 3rd in optical circulator port trend, in this manner, until ring
Go to last port.
In general, by the contemplated above technical scheme of the present invention compared with prior art, it can obtain down and show
Beneficial effect：
The two kinds of different recovery of direct current sense light and Communication ray are synthesized into wavelength division multiplexed light, although by two beam different wave lengths
The a branch of wavelength division multiplexed light of recovery synthesis is not at all surprising, still, in apparatus of the present invention, it is contemplated that the light intensity to direct current sense light is adjusted
System, there is provided sense light monitoring modular and intensity modulation module, sense light detection module monitor the size of sense light, is adjusted with light intensity
Molding block is connected with sensing DC light source, to adjust the luminous power of direct current sense light, and in order that direct current sense light size and biography
The closed-loop control of a feedback is formed between photosensitive intensity monitor module, the first optical splitter and the second light splitting is dexterously provided with
Device, organically integrates direct current light intensity modulation function and Polarization Detection function.The present patent application is ingenious by multiple light
Component or module organic linking are learned together, successfully by optical fiber communication function and optical fiber polarisation sensing function in identical light
Realized in fibre, improve the utilization ratio of optical fiber.
The present invention is directly completed using the optical fiber sensing technology of Polarization Detection using the single mode or multimode fibre of telecommunications use
The detection of Polarization-Sensitive amount, it is not necessary to use special sensor fibre such as polarization maintaining optical fibre, it is not required that light is coupled on sensing point
There is provided the distributed sensing ability of the optical cable of low cost or power cable line for gate sensor.
Brief description of the drawings
Fig. 1 is to be used for the structural representation for the optical fiber multiplexing system that fiber optic communication is sensed with optical fiber polarisation in the embodiment of the present invention
Figure；
Fig. 2 is to be used to direct current in the optical fiber multiplexing system that fiber optic communication is sensed with optical fiber polarisation in the embodiment of the present invention sense
The schematic flow sheet of light intensity modulation.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
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.As long as in addition, technical characteristic involved in each embodiment of invention described below
Not constituting conflict each other can just be mutually combined.
Fig. 1 is to be used for the structural representation for the optical fiber multiplexing system that fiber optic communication is sensed with optical fiber polarisation in the embodiment of the present invention
Figure, as seen from the figure, optical fiber multiplexing system of the invention include the first communication optical module, the first smooth multiplexer/demultiplexer, the second smooth division
Ripple device, the second communication optical module, intensity modulation module, sensing DC light source, the first optical splitter, the second optical splitter, sense light light
Strong monitoring modular, polarization state analyzer, sense light spy group, transducing signal filter and amplification group and polarization state sensing detection module.
Wherein, the first communication optical module is connected by telecommunication optical fiber and the first smooth multiplexer/demultiplexer, and the first communication optical module is used
In the communicating light signal for sending or receiving setting wavelength (λ 1)；The intensity modulation module is connected with the sensing DC light source
Connect, the intensity modulation module is used to adjusting input to the driving current for sensing DC light source, with by adjusting driving current
Reach the purpose of adjustment direct current sense light Output optical power.The sensing DC light source is used for the direct current for sending setting wavelength (λ 2)
Sense light, setting wavelength X 1 and the setting non-overlapping of wavelength X 2.The intensity modulation module and the sensing DC light source are simultaneously
Also be connected by telecommunication optical fiber with the first optical splitter, first optical splitter be used for separate incidence light intensity pulse and outgoing it is straight
Spread photosensitive.First optical splitter is also connected by telecommunication optical fiber with the described first smooth multiplexer/demultiplexer, first light point
Wave multiplexer is used to the light beam of two kinds of different wave lengths (λ 1 and λ 2) merging into same light beam, to generate wdm light beam, and instead
To two light beams that wdm light beam is decomposed into different wave length (λ 1 and λ 2).Passing through for the first smooth multiplexer/demultiplexer communicates
Optical fiber connects the second smooth multiplexer/demultiplexer, and the second smooth multiplexer/demultiplexer is used to wdm light beam being decomposed into different wave length
Two light beams of (λ 1 with λ 2), and the light beam of two kinds of different wave lengths (λ 1 and λ 2) is reversely merged into (namely the wavelength-division of same light beam
Multiplexed beam).Second smooth the second communication of multiplexer/demultiplexer connection optical module, the second communication optical module is used to send or connect
Receive the communicating light signal of setting wavelength (λ 1).The port (ports of λ 2) of the second smooth multiplexer/demultiplexer connects the second optical splitter, institute
The effect for stating the second smooth multiplexer/demultiplexer is two light beams that wdm light beam is decomposed into different wave length (λ 1 and λ 2), and reversely
The light beam of two kinds of different wave lengths (λ 1 and λ 2) is merged into same light beam (wdm light beam), the second optical splitter effect is
The light intensity pulse of reverse isolation outgoing and the direct current for distributing incidence to sense light intensity monitor module and polarization state analyzer are sensed
Light, second optical splitter connects sensor light monitoring modular simultaneously, and the sensor light monitoring modular is used to monitor sense light
Light intensity.When sense light light intensity is weaker, intensity modulation module can be informed by light intensity pulse signal, intensity modulation module is adjusted
Whole driving current, the direct current sense light luminous power that the size of driving current can send sensing DC light source is sized therewith.
Further, second optical splitter connects the input of the polarization state analyzer, will carry polarization letter
Number polarization state direct current sense light input to polarization state analyzer, the output end of the polarization state analyzer connects the sense light
The input of spy group, the output end of the sensor light spy group connects the input of the transducing signal filter and amplification group, described
The output end of transducing signal filter and amplification group connects the polarization state sensing detection module.The polarization state analyzer is used to detect
The intensity of polarization light of the single setting polarization angle of direct current sense light or the intensity of polarization light of multiple setting angles of polarization, the sensing
Polarised light of the light spy group for detecting and receiving the single or multiple polarization angles from the polarization state analyzer, and respectively will
It is converted into current signal, and the transducing signal filter and amplification group is used for single or many to the expression from the sense light spy group
The voltage signal of the polarised light of individual polarization angle, and the filter and amplification of signal is carried out to it, to obtain table of the waveform Jing Guo shaping
Show the voltage signal of the polarised light of single or multiple polarization angles, the polarization state sensing detection module is used for described by whole
The change of the voltage signal of the polarised light of the single or multiple polarization angles of expression of shape is tested and analyzed, to realize polarization sense
Function.
In one embodiment of the invention, it is described first communication optical module and the first smooth multiplexer/demultiplexer between, it is described
Between first smooth multiplexer/demultiplexer and the described second smooth multiplexer/demultiplexer, the second smooth multiplexer/demultiplexer communicates optical module with described second
Between, between the intensity modulation module and first optical splitter, between the sensing DC light source and first optical splitter, it is described
It is connected between first optical splitter and the first smooth multiplexer/demultiplexer with telecommunication optical fiber, second optical splitter and the sense light light
It is connected between strong monitoring modular with telecommunication optical fiber.
In yet another embodiment of the present invention, the described first smooth multiplexer/demultiplexer and the second smooth multiplexer/demultiplexer structure phase
Together, the described first smooth multiplexer/demultiplexer and the second smooth multiplexer/demultiplexer include two points that division ripple wavelength is respectively λ 1 and λ 2
Ripple port, the first smooth multiplexer/demultiplexer and the second smooth multiplexer/demultiplexer are symmetrical arranged in systems, and in two divisions
It is connected between the multiplex port of ripple device with telecommunication optical fiber.
In the present invention, the first optical splitter is reversely to turn in system architecture to use, and it has an input port, two
Individual output port, one of output port is used as the input of light.
In yet another embodiment of the present invention, the light energy ratio of first optical splitter point to sensing DC light source is small
In dividing to the light energy ratio of intensity modulation module, second optical splitter divides to the light energy ratio of sense light intensity monitor module
Example, which is less than, divides to the light energy ratio of polarization state analyzer.The knot of the first communication optical module and the second communication optical module
Structure is identical.The splitting ratio of first optical splitter is 1:99, the splitting ratio of second optical splitter is 1:9.Two light splitting
The splitting ratio of device can according to actual needs, and matching system is adjusted.
In yet another embodiment of the present invention, between second optical splitter and the polarization state analyzer, the polarization
Between state analyzer and the sense light spy group, between the sense light spy group and the transducing signal filter and amplification group, the sensing
Signal filtering amplification group is connected with the polarization state sensing detection module with circuit.
In yet another embodiment of the present invention, first optical splitter is replaced using optical circulator, optical circulator has
The optical circulator of three ports is used in multiple ports, the present invention, if using the optical circulator of four ports, only using therein
Three ports, three ports form the current light path of ring.The optical circulator first port is connected with sensing DC light source, light
The smooth multiplexer/demultiplexer of circulator second port first is connected, and the port of optical circulator the 3rd is connected with intensity modulation module, the ring of light
Row device port trend is the port of first port → second port → the 3rd.
In one embodiment of the invention, the polarization state analyzer includes single polarization state analyzing, dual-polarization state analyzing
Or multi-polarization state analyzing, if its port number of single polarization state analyzing is in × 1, out × 1, if its end of dual-polarization state analyzing
Mouth quantity is in × 1, out × 2, if its port number of multi-polarization state analyzing is in × 1, out × n.
In the present invention, telecommunication optical fiber namely optical fiber polarisation sensor information.
In order to deeper into understanding present inventive concept, below so that the core light path of present inventive concept is discussed in detail, it has
Four light paths, be respectively：
First is:The communication optical mode of first communication smooth multiplexer/demultiplexer → the second of optical module → the first smooth multiplexer/demultiplexer → second
Block, this light path is by realizing optical communication capabilities, and Communication ray can transmitted in both directions in this light path.
Article 2 light path is：The smooth multiplexer/demultiplexer of optical splitter → the first of intensity modulation module → sensing DC light source → first →
Second smooth multiplexer/demultiplexer → the second optical splitter → polarization state analyzer → sense light spy group → transducing signal filter and amplification group → partially
Polarization state sensing detection module, this light path realizes sensor measuring function to sense direct current light.Sense direct current light is in the light path
One-way transmission, to sense DC light source as starting point, using polarization state sensing detection module as terminal.
Article 3 light path is：The smooth multiplexer/demultiplexer of optical splitter → the first of intensity modulation module → sensing DC light source → first →
Second smooth multiplexer/demultiplexer → the second optical splitter → sense light intensity monitor module, this light path realizes that sense light direct current light light intensity is supervised
Brake.It is one-way transmission in the light path to sense direct current light, to sense DC light source as starting point, with sense light intensity monitor mould
Block is terminal.
Article 4 light path is：The light point of the smooth multiplexer/demultiplexer of optical splitter → the second of sense light intensity monitor module → second → first
Wave multiplexer → the first optical splitter → intensity modulation module, this light path is realized to sensor direct current light luminous power with light intensity pulsed light
Adjustment.Light intensity pulsed light is one-way transmission in the light path, using sense light intensity monitor module as starting point, with intensity modulation mould
Block is terminal.
Fig. 2 is to be used to direct current in the optical fiber multiplexing system that fiber optic communication is sensed with optical fiber polarisation in the embodiment of the present invention sense
The schematic flow sheet of light intensity modulation, as seen from the figure, apparatus of the present invention carry out the method for work bag of direct current sense light intensity modulation
Include following steps：
S1：Start and send the direct current optical signal of T durations, specifically, defeated to sensing DC light source with intensity modulation module
Enter driving current, with the direct current optical signal for starting sensing DC light source and making sensing DC light source send T durations.
S2：Receive direct current optical signal；Specifically, receiving direct current optical signal with sense light intensity monitor module.
S3：Judge whether the direct current optical signal of T durations receives, if the direct current optical signal duration received is T,
Judge that the direct current optical signal of T durations is received, jump to step S4, if the direct current optical signal duration received is less than T,
Judge that the direct current optical signal of T durations is not received, jump to step S2, specifically, being sentenced with sense light intensity monitor module
Whether the direct current optical signal of disconnected T durations receives.
S4：Calculate average value of the direct current optical signal in duration T；Specifically, being calculated using sense light intensity monitor module
Average value of the direct current optical signal in duration T.
S5：Judge whether the average intensity of direct current optical signal in T durations is less than threshold value, if direct current optical signal in T durations
Average intensity is less than threshold value, then the instruction for improving direct current light light intensity is sent, if the average intensity of direct current optical signal is more than in T durations
Or equal to threshold value, then send the instruction for maintaining direct current light light intensity.Specifically, described improve the instruction of direct current light light intensity and described
The instruction for maintaining direct current light light intensity is the pulse command of pulsed light strong form, is judged with sense light intensity monitor module in T durations
Whether the average intensity of direct current optical signal is less than threshold value, if the average intensity of direct current optical signal is less than threshold value in T durations, senses
Light intensity monitor module sends the pulse command for improving direct current light light intensity, if the average intensity of direct current optical signal is more than in T durations
Or equal to threshold value, then sense light intensity monitor module sends the pulse command for maintaining direct current light light intensity.Wherein, direct current light is improved
The pulse command of light intensity is for example signal 1010, and it is for example signal 1100 to maintain the pulse command of direct current light light intensity.
S6：Execute instruction, implements direct current light intensity modulation.Specifically, pulse command is passed through into the second optical splitter, the second light
Multiplexer/demultiplexer, the first smooth multiplexer/demultiplexer, the first optical splitter are exported to intensity modulation module, and intensity modulation module is according to pulse command
Type adjustment input to sense DC light source driving current, implement direct current light intensity modulation.
Polarization sense and communication work(are realized on the ingenious use wavelength-division multiplex technique of the present patent application, same optical fiber simultaneously
Can, a variety of functions are realized simultaneously on an optical fiber, the new optical fiber without laying so that sensing fibre core is passed for optical fiber distributed type
The data transfer of general purpose is can also be used for while sense, so as to improve the utilization rate of sensor fibre.
The present patent application directly uses telecommunication optical fiber as polarization sense medium, is not required on optic communication links lay light
Gate sensor, eliminates and lays the insertion loss that grating sensor is caused to communication link.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not used to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the invention etc., it all should include
Within protection scope of the present invention.
Claims (10)
1. a kind of optical fiber multiplexing system sensed for fiber optic communication with optical fiber polarisation, it is characterised in that it includes the first communication
Optical module, the first smooth multiplexer/demultiplexer, the second smooth multiplexer/demultiplexer, the second communication optical module, intensity modulation module, sensing direct current light
Source, the first optical splitter, the second optical splitter, sense light intensity monitor module, polarization state analyzer, sense light spy group, transducing signal
Filter and amplification group and polarization state sensing detection module, wherein,
First optical communications module is connected with the first partial wave port of the described first smooth multiplexer/demultiplexer,
The multiplex port of the first smooth multiplexer/demultiplexer is connected with the multiplex port of the second smooth multiplexer/demultiplexer,
The first partial wave port connection the second communication optical module of the second smooth multiplexer/demultiplexer,
The input of the intensity modulation module connects the output port of the first optical splitter the firstth, the intensity modulation module
The input of the output end connection sensing DC light source, the output end of the sensing DC light source connects first optical splitter
The second output port,
The input port of first optical splitter connects the second partial wave port of the first smooth multiplexer/demultiplexer,
Second partial wave port of the second smooth multiplexer/demultiplexer connects the input port of second optical splitter with telecommunication optical fiber,
First output port of second optical splitter connects the sense light intensity monitor module,
Second output port of second optical splitter connects the input of the polarization state analyzer,
The output end of the polarization state analyzer connects the input of the sense light spy group,
The output end of the sensor light spy group connects the input of the transducing signal filter and amplification group,
The output end of the transducing signal filter and amplification group connects the polarization state sensing detection module.
2. a kind of optical fiber multiplexing system sensed for fiber optic communication with optical fiber polarisation as claimed in claim 1, its feature exists
In,
The first communication optical module is used for the communicating light signal for sending or receiving setting wavelength X 1,
The intensity modulation module is used to adjust the driving current that input extremely senses DC light source according to the light intensity pulse of feedback, with
The purpose for adjusting direct current sense light Output optical power is reached by adjusting driving current,
First optical splitter, which is used to separate, is incident to the light intensity pulse of itself and the direct current sense light from itself outgoing,
The sensing DC light source is used for the direct current sense light for sending setting wavelength X 2, and setting wavelength X 1 is with setting the not phase of wavelength X 2
It is overlapping,
The first smooth multiplexer/demultiplexer is used to two kinds of different wave length λ 1 and λ 2 light beam merging into same light beam, to generate wavelength-division
Multiplexed beam, and the reverse two light beams that wdm light beam is decomposed into different wave length λ 1 and λ 2,
The second smooth multiplexer/demultiplexer is used for the two light beams that wdm light beam is decomposed into different wave length λ 1 and λ 2, and reversely
Two kinds of different wave length λ 1 and λ 2 two light beams are merged into wdm light beam,
Second optical splitter is used to reversely separate from the light intensity pulse of itself outgoing and to sense light intensity monitor module and partially
The incident direct current sense light of polarization state analyzer difference,
The second communication optical module is used for the communicating light signal for receiving or sending setting wavelength X 1,
The sense light intensity monitor module is used for the light intensity magnitude for monitoring direct current sense light,
The polarization state analyzer is used for the intensity of polarization light or multiple for detecting the single setting polarization angle in direct current sense light
The intensity of polarization light of the angle of polarization is set,
The sense light spy group is for detecting and receiving the inclined of the single or multiple polarization angles from the polarization state analyzer
Shake light, and is translated into current signal respectively,
The transducing signal filter and amplification group is used to receive the single or multiple polarization angles of expression from the sense light spy group
Polarised light voltage signal, and carry out the filter and amplification of signal to it, represent single or many by shaping to obtain waveform
The voltage signal of the polarised light of individual polarization angle,
The polarization state sensing detection module is used for the polarised light of the single or multiple polarization angles of expression to the process shaping
Voltage signal tested and analyzed, to realize polarization sense function.
3. a kind of optical fiber multiplexing system sensed for fiber optic communication with optical fiber polarisation as claimed in claim 2, its feature exists
In described first communicates between optical module and the first smooth multiplexer/demultiplexer, the first smooth multiplexer/demultiplexer divides with second light
Between wave multiplexer, the second smooth multiplexer/demultiplexer and the second Communication ray intermodule, the intensity modulation module and described first
Between optical splitter, between the sensing DC light source and first optical splitter, first optical splitter and the first smooth multiplexer/demultiplexer
Between be connected with telecommunication optical fiber, second optical splitter is also connected with the sense light intensity monitor intermodule with telecommunication optical fiber
It is logical.
4. it is as claimed in claim 1 a kind of for fiber optic communication and optical fiber polarisation sensing as described in one of claim 1-3
Optical fiber multiplexing system, it is characterised in that the complete phase of structure of the first smooth multiplexer/demultiplexer and the second smooth multiplexer/demultiplexer
Together.
5. a kind of optical fiber multiplexing system sensed for fiber optic communication with optical fiber polarisation as claimed in claim 4, its feature exists
In the first smooth multiplexer/demultiplexer and the second smooth multiplexer/demultiplexer are symmetrical arranged in photosystem.
6. a kind of optical fiber multiplexing system sensed for fiber optic communication with optical fiber polarisation as claimed in claim 5, its feature exists
In the light energy ratio of first optical splitter point to sensing DC light source, which is less than, divides to the light energy ratio of intensity modulation module
Example, the light energy ratio of second optical splitter point to sense light intensity monitor module, which is less than, divides to the luminous energy of polarization state analyzer
Amount ratio.
7. a kind of optical fiber multiplexing system sensed for fiber optic communication with optical fiber polarisation as claimed in claim 1, its feature exists
In the first communication optical module is identical with the structure of the described second communication optical module.
8. a kind of optical fiber multiplexing system sensed for fiber optic communication with optical fiber polarisation as described in one of claim 1-7, its
It is characterised by, the splitting ratio of first optical splitter is 1:99, the splitting ratio of second optical splitter is 1:9.
9. a kind of optical fiber multiplexing system sensed for fiber optic communication with optical fiber polarisation as claimed in claim 8, its feature exists
In, between second optical splitter and the polarization state analyzer, between the polarization state analyzer and the sense light spy group with
Telecommunication optical fiber is connected, between the sense light spy group and the transducing signal filter and amplification group, the transducing signal filter and amplification group
It is connected with the polarization state sensing detection intermodule with circuit.
10. a kind of optical fiber multiplexing system sensed for fiber optic communication with optical fiber polarisation as claimed in claim 1, its feature exists
In using optical circulator replacement first optical splitter, the optical circulator first port is connected with sensing DC light source, the ring of light
The smooth multiplexer/demultiplexer of row device second port first is connected, and the port of optical circulator the 3rd is connected with intensity modulation module, the ring of light row
Light trend of going in ring is the port of first port → second port → the 3rd in device.
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| CN109274434A (en) * | 2018-11-07 | 2019-01-25 | 桂林电子科技大学 | A kind of light energy and optical signal transceiver processing system integrating optical cable based on single fiber |
| CN115694643A (en) * | 2022-10-27 | 2023-02-03 | 中国联合网络通信集团有限公司 | Signal transmission method, device, equipment and storage medium |
| CN115967445A (en) * | 2022-06-29 | 2023-04-14 | 中兴通讯股份有限公司 | Method, equipment and system for generating optical network topology |
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| CN102322958A (en) * | 2011-08-09 | 2012-01-18 | 复旦大学 | Method for monitoring optical fiber polarization change and optical path system |
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| CN115967445A (en) * | 2022-06-29 | 2023-04-14 | 中兴通讯股份有限公司 | Method, equipment and system for generating optical network topology |
| CN115967445B (en) * | 2022-06-29 | 2024-03-19 | 中兴通讯股份有限公司 | Method, equipment and system for generating optical network topology |
| CN115694643A (en) * | 2022-10-27 | 2023-02-03 | 中国联合网络通信集团有限公司 | Signal transmission method, device, equipment and storage medium |
| CN115694643B (en) * | 2022-10-27 | 2024-05-03 | 中国联合网络通信集团有限公司 | Signal transmission method, device, equipment and storage medium |
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Effective date of registration: 20200103 Address after: Room 302, block B, building 1, hujingyuan, Andeli North Street, andingmenwai, Dongcheng District, Beijing 100007 Co-patentee after: Yitong Century Science and Technology Co., Ltd. Patentee after: Beijing Tianhe Hongcheng Electronics Co., Ltd. Address before: 215311, Suzhou, Jiangsu, Kunshan, Xueyuan Road Town, No. 88 building, 5 Building Patentee before: KUNSHAN JINMING PHOTOELECTRIC SCIENCE & TECHNOLOGY CO., LTD. |