CN107248897B - A kind of optical fiber multiplexing system for fiber optic communication and optical fiber polarisation sensing - Google Patents
A kind of optical fiber multiplexing system for fiber optic communication and optical fiber polarisation sensing Download PDFInfo
- Publication number
- CN107248897B CN107248897B CN201710363758.5A CN201710363758A CN107248897B CN 107248897 B CN107248897 B CN 107248897B CN 201710363758 A CN201710363758 A CN 201710363758A CN 107248897 B CN107248897 B CN 107248897B
- Authority
- CN
- China
- Prior art keywords
- light
- optical
- optical fiber
- sensing
- demultiplexer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 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
- 238000007493 shaping process Methods 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
Abstract
The invention discloses the optical fiber multiplexing systems for fiber optic communication and optical fiber polarisation sensing,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,It senses DC light source and connects 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 is connected with 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, has polarization characteristic.The polarization state of optical fiber inner light beam is to extraneous deformation, vibration, temperature
Equal variations are more sensitive.By the variation of detection fiber inner light beam polarization state, the external worlds such as deformation, vibration, temperature can be measured
The variation 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 the Polarization-Sensitive amount of optical cable, power cable.But communications optical cable and fiber resource in power cable are very valuable.
Borrow sensing applications fibre core is needed to realize the sensing number of sensing node in sensing network in networking in optical fiber polarisation sensor-based system
According to transmission to collect, this needs to occupy valuable fiber resource.It is saved if the optical fiber of sensing applications is not separately provided
The idle fibre core of optical fiber can be used for carrying more communication tasks.
Application No. is 201310455498.6 Chinese patent applications《With communication and sensing function fiber unit and its
Manufacturing method》Middle proposition is " fiber unit ", which includes " a tightly packaged fiber sensing unit and commutation in center
Several 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 of more different types of optical fiber, includes optical fiber with communication function and has
The optical fiber of sensing function, to realize optical fiber cable while there is communication and sensing function.
Application No. is the Chinese patent applications of 201510816255.X to disclose a kind of optical fiber grating sensing and fiber optic communication
Integral system can realize communication and detection integral application on a fiber optic network, need in telecommunication optical fiber link
Upper laying grating sensor, insertion loss can be caused on the communication link by laying grating sensor.
Application No. is 200580042657.3 Chinese patent applications to disclose《Reflective optical system, optical multiplexer/demultiplexer and light
System》, where it is proposed " performance of optical wavelength multiplex communication can be improved while mitigating the tightness of optical filter
Reflective optical system, light and channel-splitting filter and photosystem ", but the purpose of the patent application is " it is logical to improve optical wavelength multiplex
Letter ".It further provides a kind of way of realization of special light multiplexer/demultiplexer.Wavelength division multiplexer (abbreviation WDM) common are
CWDM and the main distinction of two kinds of DWDM, CWDM and DWDM are：Between wavelength relative to 0.2nm to 1.2nm in dwdm system
For, CWDM has broader wavelength interval, and 20nm is divided between the standard wave length that industry is passed through.The present patent application is substantial
It is a kind of implementation of CWDM, it is different from common light multiplexer/demultiplexer.
Existing optical fiber sensing technology is generally all used as Fibre Optical Sensor using independent fibre core resource, is sensed in sensing network
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 in this way in communications optical cable or power cable.
Invention content
For the disadvantages described above or Improvement requirement of the prior art, it is inclined for fiber optic communication and optical fiber that the present invention provides one kind
The optical fiber multiplexing system for sensing of shaking, it is intended that by the way that optical module and element is cleverly arranged, cleverly by multiple light paths
It is arranged in same photosystem, it is thus achieved that optical fiber communication function and optical fiber polarisation sensing function are real in identical optical fiber
It is existing, the utilization ratio of optical fiber can be improved.
To achieve the above object, according to one aspect of the present invention, it provides a kind of for fiber optic communication and optical fiber polarisation
The optical fiber multiplexing system of sensing comprising the first communication optical module, the first smooth multiplexer/demultiplexer, the second smooth multiplexer/demultiplexer, second are led 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 wave
The third port of device is connected with the first port of the second smooth multiplexer/demultiplexer, and the second port of the second smooth multiplexer/demultiplexer connects institute
The second communication optical module is stated, the input terminal of the intensity modulation module connects the first optical splitter first port, the light intensity
Modulation module output end connects the input terminal of the sensing DC light source, the output end connection described the of the sensing DC light source
The second port of one optical splitter, the third port of first optical splitter connect the second port of the described first smooth multiplexer/demultiplexer,
The third port of the second smooth multiplexer/demultiplexer connects the first port of second optical splitter with telecommunication optical fiber, described second point
The second port of light device connects the sense light intensity monitor module, and the third port of second optical splitter connects the polarization
The input terminal of state analyzer, the output end of the polarization state analyzer connect the input terminal of the sense light spy group, the sensing
The output end of device light spy group connects the input terminal of the transducing signal filter and amplification group, the transducing signal filter and amplification group it is defeated
Outlet connects the polarization state sensing detection module.
Further, the first communication optical module is used to send out or receive the communicating light signal of setting wavelength X 1, institute
Driving current of the intensity modulation module for being input to sensing DC light source according to the light intensity pulse of feedback adjustment is stated, is adjusted with passing through
Whole driving current and achieve the purpose that adjust direct current sense light Output optical power, first optical splitter for detach is incident to from
The light intensity pulse of body and the direct current sense light being emitted from itself, the sensing DC light source are used to send out the direct current of setting wavelength X 2
Sense light, setting wavelength X 1 are used for setting 2 non-overlapping of wavelength X, the first smooth multiplexer/demultiplexer by two kinds of different wave length λ 1
Same light beam is merged into the light beam of λ 2, to generate wdm light beam, and wdm light beam is reversely decomposed into different waves
The two light beams of long λ 1 and λ 2, the second smooth multiplexer/demultiplexer are used to wdm light beam being decomposed into different wave length λ 1 and λ's 2
Two light beams, and the two light beams of two kinds of different wave length λ 1 and λ 2 are reversely merged into wdm light beam, second light splitting
Device is for reversely detaching from the light intensity pulse itself being emitted and entering respectively to sense light intensity monitor module and polarization state analyzer
The direct current sense light penetrated, the second communication optical module is used to receive or send out the communicating light signal of setting wavelength X 1, described
Sense light intensity monitor module is used to monitor the light intensity magnitude of direct current sense light, and the polarization state analyzer is for detecting direct current biography
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
Polarised light for detecting and receiving 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, indicate single by shaping to obtain waveform
Or the voltage signal of the polarised light of multiple polarization angles, the polarization state sensing detection module are used for the table by shaping
Show that the variation of the voltage signal of the polarised light of single or multiple polarization angles is detected analysis, 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 with telecommunication optical fiber between first smooth multiplexer/demultiplexer, 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 second communication structure of 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 and the biography
It is connected with telecommunication optical fiber between photosensitive spy group, between the sense light spy group and the transducing signal filter and amplification group, the sensing
Signal filter and amplification group is connected with circuit with the polarization state sensing detection module.
Further, first optical splitter is replaced using optical circulator, the optical circulator first port is straight with sensing
Streamer source connects, the connection of the first smooth multiplexer/demultiplexer of optical circulator second port, optical circulator third port and intensity modulation module
Connection, light is first port → second port → third port in optical circulator port trend, in this manner, until ring
It goes to the last one port.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
Beneficial effect：
The two 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 tune of direct current sense light
System is provided with sense light monitoring modular and intensity modulation module, and sense light detection module monitors the size of sense light, with light intensity tune
Molding block is connected with sensing DC light source, to adjust the luminous power of direct current sense light, and in order to make direct current sense light size and biography
The closed-loop control that a feedback is formed between photosensitive intensity monitor module cleverly sets the first optical splitter and the second light splitting
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
It is realized in fibre, improves the utilization ratio of optical fiber.
The present invention uses the optical fiber sensing technology of Polarization Detection, and the single mode of telecommunications use or multimode fibre is directly used to complete
The detection of Polarization-Sensitive amount need not use dedicated sensor fibre such as polarization maintaining optical fibre, light need not be also coupled on sensing point
Gate sensor provides the optical cable of low cost or the distributed sensing ability of power cable line.
Description of the drawings
Fig. 1 is the structural representation for fiber optic communication and the optical fiber multiplexing system of optical fiber polarisation sensing in the embodiment of the present invention
Figure；
Fig. 2 is sensed for fiber optic communication and direct current in the optical fiber multiplexing system of optical fiber polarisation sensing in the embodiment of the present invention
The flow diagram of light intensity modulation.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be 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.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
It does not constitute a conflict with each other and can be combined with each other.
Fig. 1 is the structural representation for fiber optic communication and the optical fiber multiplexing system of optical fiber polarisation sensing 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
Wave 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 out or receiving setting wavelength (λ 1)；The intensity modulation module is connected with the sensing DC light source
It connects, the intensity modulation module is used to adjust the driving current for being input to and sensing DC light source, with by adjusting driving current
Achieve the purpose that adjust direct current sense light Output optical power.The sensing DC light source is used to send out the direct current of setting wavelength (λ 2)
Sense light, setting wavelength X 1 and setting 2 non-overlapping of wavelength X.The intensity modulation module and the sensing DC light source are simultaneously
It is also connect with the first optical splitter by telecommunication optical fiber, first optical splitter is used to detach the straight of incident light intensity pulse and outgoing
It spreads photosensitive.First optical splitter is also connect 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 it is anti-
To two light beams that wdm light beam is decomposed into different wave length (λ 1 and λ 2).The first smooth multiplexer/demultiplexer passes through communication
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 for sending out or connecing
Receive the communicating light signal of setting wavelength (λ 1).The port (2 ports λ) of the second smooth multiplexer/demultiplexer connects the second optical splitter, institute
The effect for stating the second smooth multiplexer/demultiplexer is that wdm light beam is decomposed into two light beams of different wave length (λ 1 with λ 2), and reversed
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 sense
Light, second optical splitter connect sensor light monitoring modular simultaneously, and the sensor light monitoring modular is for monitoring sense light
Light intensity.When sense light light intensity is weaker, intensity modulation module can be informed by light intensity pulse signal, make intensity modulation module tune
Whole driving current, the direct current sense light luminous power that the size of driving current can be such that sensing DC light source sends out are sized therewith.
Further, second optical splitter connects the input terminal of the polarization state analyzer, will carry polarization letter
Number polarization state direct current sense light be input to polarization state analyzer, the output end of the polarization state analyzer connects the sense light
The input terminal of spy group, the output end of the sensor light spy group connects the input terminal 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 for detecting
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
Light spy group is used to detect and receive the polarised light of 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 more to the expression from the sense light spy group
The voltage signal of the polarised light of a polarization angle, and the filter and amplification of signal is carried out to it, to obtain table of the waveform Jing Guo shaping
Show that the voltage signal of the polarised light of single or multiple polarization angles, the polarization state sensing detection module are used for described by whole
The variation of the voltage signal of the polarised light of the single or multiple polarization angles of expression of shape is detected analysis, 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 communicate 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 with telecommunication optical fiber between first optical splitter and the first smooth multiplexer/demultiplexer, second optical splitter and the sense light light
It is connected with telecommunication optical fiber between strong monitoring modular.
In yet another embodiment of the present invention, the described first smooth multiplexer/demultiplexer and the second smooth multiplexer/demultiplexer structure phase
Together, it is respectively two points of λ 1 and λ 2 that the described first smooth multiplexer/demultiplexer and the second smooth multiplexer/demultiplexer, which include division wave wavelength,
Wave port, the first smooth multiplexer/demultiplexer and the second smooth multiplexer/demultiplexer are symmetrical arranged in systems, and in two divisions
It is connected with telecommunication optical fiber between the multiplex port of wave device.
In the present invention, the first optical splitter is reversely to turn in system structure to use, and tool is there are one input port, two
A output port, one of output port are 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 is less than the light energy ratio divided to 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 filter and amplification group is connected with circuit with the polarization state sensing detection module.
In yet another embodiment of the present invention, first optical splitter is replaced using optical circulator, optical circulator has
If multiple ports are only used therein using the optical circulator of three ports using the optical circulator of four ports in of the invention
Three ports, three ports form circumferential current light path.The optical circulator first port is connect with sensing DC light source, light
The first smooth multiplexer/demultiplexer of circulator second port connects, and optical circulator third port is connect with intensity modulation module, the ring of light
Row device port trend is first port → second port → third port.
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 have below the core light path of present inventive concept is discussed in detail
Four light paths, respectively：
First is:First communication smooth multiplexer/demultiplexer → the second of optical module → the first smooth multiplexer/demultiplexer → second communicates optical mode
Block, for this light path by realizing optical communication capabilities, 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 realize 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 realize sense light direct current light light intensity prison
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 are realized with light intensity pulsed light to sensor direct current light luminous power
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 sensed for fiber optic communication and direct current in the optical fiber multiplexing system of optical fiber polarisation sensing in the embodiment of the present invention
The flow diagram of light intensity modulation, as seen from the figure, apparatus of the present invention carry out the working method packet of direct current sense light intensity modulation
Include following steps：
S1：Start and send out the direct current optical signal of T durations, specifically, defeated to sensing DC light source with intensity modulation module
Enter driving current, to start the direct current optical signal for sensing DC light source and sensing DC light source being made to send out 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 receives, go 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 does not receive, go to step S2, specifically, sentencing 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 out, if the average intensity of direct current optical signal is more than in T durations
Or be equal to threshold value, then send out the instruction for maintaining direct current light light intensity.Specifically, described improve the instruction of direct current light light intensity and described
It is the pulse command of pulsed light strong form to maintain the instruction of direct current light light intensity, is judged in T durations with sense light intensity monitor module
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 out 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 being equal to threshold value, then sense light intensity monitor module sends out 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, maintains the pulse command of direct current light light intensity for for example signal 1100.
S6：It executes instruction, implements direct current light intensity modulation.Specifically, by pulse command by 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 be input to sensing DC light source driving current, implement direct current light intensity modulation.
The present patent application is ingenious in use of wavelength division multiplexing, realizes polarization sense and communication work(on same root optical fiber simultaneously
Can, multiple functions are realized simultaneously on an optical fiber, without laying new optical fiber so that sensing fibre core is passed for optical fiber distributed type
The data transmission that can also be used for general purpose while sense, to improve the utilization rate of sensor fibre.
The present patent application directly uses telecommunication optical fiber as polarization sense medium, is not required to lay light on optic communication links
Gate sensor eliminates and lays grating sensor insertion loss caused by 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, not to
The limitation present invention, all within the spirits and principles of the present invention made by all any modification, equivalent and improvement etc., should all include
Within protection scope of the present invention.
Claims (10)
1. a kind of optical fiber multiplexing system for fiber optic communication and optical fiber polarisation sensing, which is characterized 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 terminal of the intensity modulation module connects the firstth output port of the first optical splitter, the intensity modulation module
Output end connects the input terminal of the sensing DC light source, and the output end of the sensing DC light source connects first optical splitter
Second output terminal mouth,
The input port of first optical splitter connects the second partial wave port of the described 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,
The second output terminal mouth of second optical splitter connects the input terminal of the polarization state analyzer,
The output end of the polarization state analyzer connects the input terminal of the sense light spy group,
The output end of the sensor light spy group connects the input terminal 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 for fiber optic communication and optical fiber polarisation sensing as described in claim 1, feature exist
In,
The first communication optical module is used to send out or receive the communicating light signal of setting wavelength X 1,
The intensity modulation module is used to be input to the driving current of sensing DC light source according to the light intensity pulse of feedback adjustment, with
Achieve the purpose that adjust direct current sense light Output optical power by adjusting driving current,
First optical splitter is used to detach the direct current sense light for being incident to the light intensity pulse of itself and being emitted from itself,
The sensing DC light source is used to send out the direct current sense light of setting wavelength X 2, sets wavelength X 1 and sets the not phase of wavelength X 2
Overlapping,
The first smooth multiplexer/demultiplexer is used to the light beam of two kinds of different wave length λ 1 and λ 2 merging into same light beam, to generate wavelength-division
Multiplexed beam, and wdm light beam is reversely decomposed into the two light beams of different wave length λ 1 and λ 2,
The second smooth multiplexer/demultiplexer is used to wdm light beam being decomposed into the two light beams of different wave length λ 1 and λ 2, and reversed
The two light beams of two kinds of different wave length λ 1 and λ 2 are merged into wdm light beam,
Second optical splitter is for reversely detaching from the light intensity pulse itself being emitted 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 to receive or send out the communicating light signal of setting wavelength X 1,
The sense light intensity monitor module is used to monitor the light intensity magnitude of direct current sense light,
The polarization state analyzer is used to detect the intensity of polarization light or multiple of 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 for receiving the single or multiple polarization angles of expression from the sense light spy group
Polarised light voltage signal, and the filter and amplification of signal is carried out to it, indicates single or more by shaping to obtain waveform
The voltage signal of the polarised light of a polarization angle,
The polarization state sensing detection module is used for the polarised light of the single or multiple polarization angles of expression by shaping to described
Voltage signal be detected analysis, to realize polarization sense function.
3. a kind of optical fiber multiplexing system for fiber optic communication and optical fiber polarisation sensing as claimed in claim 2, feature exist
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 telecommunication optical fiber with the sense light intensity monitor intermodule
It is logical.
4. a kind of optical fiber multiplexing system for fiber optic communication and optical fiber polarisation sensing as claimed in claim 3, feature exist
In the first smooth multiplexer/demultiplexer is identical with the structure of the described second smooth multiplexer/demultiplexer.
5. a kind of optical fiber multiplexing system for fiber optic communication and optical fiber polarisation sensing as claimed in claim 4, feature exist
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 for fiber optic communication and optical fiber polarisation sensing as claimed in claim 5, feature exist
In the light energy ratio of first optical splitter point to sensing DC light source is less than the light energy ratio divided to intensity modulation module
Example, the light energy ratio of second optical splitter point to sense light intensity monitor module are less than the luminous energy divided to polarization state analyzer
Amount ratio.
7. a kind of optical fiber multiplexing system for fiber optic communication and optical fiber polarisation sensing as described in claim 1, feature exist
In the first communication optical module is identical with the second communication structure of optical module.
8. a kind of optical fiber multiplexing system for fiber optic communication and optical fiber polarisation sensing as described in one of claim 1-7,
It is characterized in that, 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 for fiber optic communication and optical fiber polarisation sensing as claimed in claim 8, feature exist
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 circuit with the polarization state sensing detection intermodule.
10. a kind of optical fiber multiplexing system for fiber optic communication and optical fiber polarisation sensing as described in claim 1, feature exist
In using optical circulator replacement first optical splitter, the optical circulator first port is connect with sensing DC light source, the ring of light
The first smooth multiplexer/demultiplexer of row device second port connects, and optical circulator third port is connect with intensity modulation module, the ring of light row
Light goes in ring trend as first port → second port → third port in device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710363758.5A CN107248897B (en) | 2017-05-22 | 2017-05-22 | A kind of optical fiber multiplexing system for fiber optic communication and optical fiber polarisation sensing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710363758.5A CN107248897B (en) | 2017-05-22 | 2017-05-22 | A kind of optical fiber multiplexing system for fiber optic communication and optical fiber polarisation sensing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107248897A CN107248897A (en) | 2017-10-13 |
| CN107248897B true CN107248897B (en) | 2018-10-30 |
Family
ID=60017427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710363758.5A Active CN107248897B (en) | 2017-05-22 | 2017-05-22 | A kind of optical fiber multiplexing system for fiber optic communication and optical fiber polarisation sensing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107248897B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109274434B (en) * | 2018-11-07 | 2022-04-15 | 桂林电子科技大学 | Light energy and light signal receiving and transmitting processing system based on single optical fiber integrated optical cable |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101453268A (en) * | 2007-12-06 | 2009-06-10 | 北京高光科技有限公司 | Optical communication system based on polarization multiplex technique and method thereof |
| CN102322958A (en) * | 2011-08-09 | 2012-01-18 | 复旦大学 | Method for monitoring optical fiber polarization change and optical path system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI406526B (en) * | 2009-06-12 | 2013-08-21 | Univ Nat Taiwan Science Tech | Signal switching module for optical network monitoring and fault locating |
-
2017
- 2017-05-22 CN CN201710363758.5A patent/CN107248897B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101453268A (en) * | 2007-12-06 | 2009-06-10 | 北京高光科技有限公司 | Optical communication system based on polarization multiplex technique and method thereof |
| CN102322958A (en) * | 2011-08-09 | 2012-01-18 | 复旦大学 | Method for monitoring optical fiber polarization change and optical path system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107248897A (en) | 2017-10-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105451840B (en) | A kind of optical time domain reflectometer realization device and system | |
| CN107248897B (en) | A kind of optical fiber multiplexing system for fiber optic communication and optical fiber polarisation sensing | |
| JP2000183821A (en) | Method and system for monitoring optical transmission line | |
| US5119223A (en) | Bidirectional light waveguide (LWG) telecommunication system and method for wavelength separation mode (bidirectional wavelength separation mode (WDM) between a central telecommunication location and plurality of decentralized telecommunication locations | |
| WO2020105779A1 (en) | Multi-channel, bi-directional optical communication module | |
| CN107196731B (en) | A kind of optical fiber multiplexing system for POTDR distributing optical fiber sensings | |
| GB2181921A (en) | Optical communications system | |
| CN106506086A (en) | Light is to optical transceiver and production and preparation method thereof | |
| KR20040023305A (en) | Supervisory system for WDM-PON fiber using OTDR | |
| WO2024027275A1 (en) | Optical fiber state detection method, optical transceiver assembly, and network element device | |
| CA2363152A1 (en) | Wdm transmitter | |
| CN103516431B (en) | Photoelectricity optical repeater, the long processing method away from box and its to upper and lower traveling optical signal | |
| CN104969565B (en) | A kind of wave division multiplexing WDM receiver apparatus and passive optical network | |
| CN105676377B (en) | A kind of multidirectional optical assembly and the method for obtaining multidirectional light | |
| CN108512623B (en) | Quantum channel and classical channel composite fiber QKD system and transmission method thereof | |
| KR20040070959A (en) | Optical channel path supervisory and correction apparatus and method for transparent optical cross-connect | |
| CN101523252B (en) | Apparatus for forming a WDM signal having orthogonally polarized optical channels | |
| JP4894659B2 (en) | Optical transmission system | |
| US20090304388A1 (en) | Optical Branching Apparatus and Passive Optical Network System | |
| CN105122690A (en) | Method, device and system for adjusting transmitting parameter of laser in WDM-PON | |
| CN208607385U (en) | A kind of high isolation wavelength-division multiplexer of integrated TAP-PD | |
| CN219676335U (en) | Multichannel active optical cable photon integrated chip and active optical cable | |
| CN103516433B (en) | A kind of photoelectricity optical repeater, length are away from box and the processing method to upper and lower traveling optical signal | |
| CN107248887B (en) | The light sensing signal receiving end light power control method of optical fibre wavelength-division multiplex | |
| TWI434058B (en) | Fiber sensing systems and fiber sensing methods |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
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. |