CN107884093A - A kind of fibre optical sensor relays amplification module - Google Patents
A kind of fibre optical sensor relays amplification module Download PDFInfo
- Publication number
- CN107884093A CN107884093A CN201610879755.2A CN201610879755A CN107884093A CN 107884093 A CN107884093 A CN 107884093A CN 201610879755 A CN201610879755 A CN 201610879755A CN 107884093 A CN107884093 A CN 107884093A
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- fibre
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- light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
- G01K11/324—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres using Raman scattering
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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
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
- H04B10/2912—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing
- H04B10/2916—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing using Raman or Brillouin amplifiers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The present invention proposes a kind of fibre optical sensor relaying amplification module, Raman diffused light fiber sensor DTS signal light input signal wavelength is used as 1550nm, optical fiber uses multimode fibre, input light enters photoisolator, it is input in EDFA Erbium-Doped Fiber Amplifier, EDFA Erbium-Doped Fiber Amplifier is by after signal light amplification, it is input in wavelength division multiplexer, optical signal after amplification is continued to be transferred in the Raman distributed fibre optical sensor DTS system of extension by wavelength division multiplexer, the sensor fibre heliogram of extension is also to be received by wavelength division multiplexer, photoisolator is sent to by optical fiber, then heliogram is transferred back into controller by single-mode fiber, by the fibre optical sensor signal extraction of extension after light-to-current inversion.The present invention is amplified installed in distributed fiberoptic sensor end to the signal in optical fiber, is realized the bi-directional gain of optical signal, the detection range of extended fiber sensor, is added detection range, does not influence detection accuracy, reduces equipment cost.
Description
Technical field
The invention belongs to field of sensing technologies, and amplification module is relayed more particularly, to a kind of fibre optical sensor.
Background technology
In Distributing Fiber Temperature Measuring System principle, LASER Light Source transmitting pulsed light (wavelength 1550nm) passes through coupling
Device is entered in sensor fibre, and temperature survey is carried out according to the relation of pulsed light transmission loss in a fiber and temperature, permanent
Isothermal segment is to provide reference temperature point for optical fiber sensor temperature demarcation.The reflected light that light echo coupler receives enters wave filter,
Receive two beam light echos, stokes light and anti-Stokes light simultaneously.Detector carries out opto-electronic conversion, by calculating two beam light echos
Energy proportion relation can calculates temperature.
In existing system, the influence that sensor fibre detection range receives fibre loss can not be oversize, and Raman scattering is general
Detection range is less than 30 kilometers.It is conduction loss of the transmission light in inside of optical fibre that detection range, which can not reach the main reason for requirement,
Heliogram is caused to be decayed, the photoelectric conversion signal of rear end is weaker to be not easy to detect.
The content of the invention
In view of this, the present invention is directed to propose a kind of fibre optical sensor relays amplification module, can be put by bi-directional optical
Senior general's heliogram strengthens, so as to greatly increase the detection range of DTS system.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of fibre optical sensor relays amplification module, including photoisolator, EDFA Erbium-Doped Fiber Amplifier, wavelength division multiplexer,
Input optical fibre is connected to photoisolator, and photoisolator is connected to EDFA Erbium-Doped Fiber Amplifier, erbium-doped fiber by multimode fibre
Input light will be sent in wavelength division multiplexer by amplifier after signal light amplification by multimode fibre, and the light output after amplification is outside
In portion's multimode fibre, while the heliogram in multimode fibre passes back to connected Phototube Coupling by wavelength division multiplexer
In device, then optical signal is returned by single-mode fiber.
Further, the input optical fibre uses multimode fibre.
Relative to prior art, a kind of fibre optical sensor relaying amplification module of the present invention has the advantage that：This
Invention is amplified installed in distributed fiberoptic sensor end to the signal in optical fiber, is realized the bi-directional gain of optical signal, is prolonged
The detection range of long optical fibers sensor, detection range is added, do not influence detection accuracy, reduce equipment cost；
Fibre optical sensor amplification relay unit is integrated horizontal high, and convenient installation, machine volume reduces, intelligent level
Height, security is good, has both met the functional requirement of distributed optical fiber sensor extension, can substantially reduce system cost again,
Required to carry out system design according to detection range；
The Raman diffused light fiber sensor amplification module of relaying amplification is added, range detection sensor can be expanded.Echo
Noise is small, easy for installation, and original measuring system is not influenceed, except as amplification relay unit extension measurement distance, the mould
Block is also applied to other distributed fiberoptic sensor expanding elements, and application field is wider.
Another object of the present invention is to propose a kind of distributed optical fiber temperature sensor based on Raman scattering, the biography
The sensor fibre of sensor connects above-mentioned relaying amplification module.
Brief description of the drawings
The accompanying drawing for forming the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is a kind of structural representation of fibre optical sensor relaying amplification module described in the embodiment of the present invention；
Fig. 2 is the Raman scattering distributed fiberoptic sensor of the extension described in the embodiment of the present invention.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than instruction or dark
Show that the device of meaning or element there must be specific orientation, with specific azimuth configuration and operation, thus it is it is not intended that right
The limitation of the present invention.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that instruction or hint phase
To importance or the implicit quantity for indicating indicated technical characteristic.Thus, the feature for defining " first ", " second " etc. can
To express or implicitly include one or more this feature.In the description of the invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in figure 1, a kind of fibre optical sensor relaying amplification module, including photoisolator, EDFA Erbium-Doped Fiber Amplifier, ripple
Division multiplexer, input optical fibre are connected to photoisolator, and photoisolator is connected to EDFA Erbium-Doped Fiber Amplifier by multimode fibre,
Input light will be sent in wavelength division multiplexer by EDFA Erbium-Doped Fiber Amplifier after signal light amplification by multimode fibre, the light after amplification
Be output in outside multimode fibre, at the same the heliogram in multimode fibre passed back to by wavelength division multiplexer it is connected
In photoisolator, then optical signal is returned by single-mode fiber.
The output optical fibre is multimode fibre.
The course of work of the present invention is as follows：Use Raman diffused light fiber sensor DTS signal light input signal wavelength for
1550nm, optical fiber use multimode fibre.Input light enters photoisolator, is input in EDFA Erbium-Doped Fiber Amplifier, erbium-doped fiber
Amplifier is input to after signal light amplification in wavelength division multiplexer.Optical signal after amplification is continued to transmit by wavelength division multiplexer
Into the Raman distributed fibre optical sensor DTS system of extension.The sensor fibre heliogram of extension is also by wavelength division multiplexer
Receive, photoisolator is sent to by optical fiber, heliogram is then transferred back into controller by single-mode fiber, become by photoelectricity
By the fibre optical sensor signal extraction of extension after changing, distributed fiberoptic sensor detection range is effectively increased.
The present invention also proposes a kind of distributed optical fiber temperature sensor based on Raman scattering, the sense light of the sensor
Fibre connects above-mentioned relaying amplification module, as shown in Figure 2.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (3)
1. a kind of fibre optical sensor relays amplification module, it is characterised in that：Including photoisolator, EDFA Erbium-Doped Fiber Amplifier, ripple
Division multiplexer, input optical fibre are connected to photoisolator, and photoisolator is connected to EDFA Erbium-Doped Fiber Amplifier by multimode fibre,
Input light will be sent in wavelength division multiplexer by EDFA Erbium-Doped Fiber Amplifier after signal light amplification by multimode fibre, the light after amplification
Be output in outside multimode fibre, at the same the heliogram in multimode fibre passed back to by wavelength division multiplexer it is connected
In photoisolator, then optical signal is returned by single-mode fiber.
A kind of 2. fibre optical sensor relaying amplification module according to claim 1, it is characterised in that：The input optical fibre is
Multimode fibre.
A kind of 3. distributed optical fiber temperature sensor based on Raman scattering, it is characterised in that：The sensor fibre of the sensor
Connect above-mentioned relaying amplification module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610879755.2A CN107884093A (en) | 2016-09-30 | 2016-09-30 | A kind of fibre optical sensor relays amplification module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610879755.2A CN107884093A (en) | 2016-09-30 | 2016-09-30 | A kind of fibre optical sensor relays amplification module |
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| CN107884093A true CN107884093A (en) | 2018-04-06 |
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| CN201610879755.2A Pending CN107884093A (en) | 2016-09-30 | 2016-09-30 | A kind of fibre optical sensor relays amplification module |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2482113Y (en) * | 2001-07-06 | 2002-03-13 | 南京华盾网络技术有限公司 | Multi-mode erbium-doped optical fibre amplifier |
| CN2496195Y (en) * | 2001-08-16 | 2002-06-19 | 华为技术有限公司 | Light relay equipment |
| CN2850144Y (en) * | 2005-09-08 | 2006-12-20 | 中国计量学院 | Optical fibre Raman amplifying stimulated Brillouin scattering comb-shaped light source |
| CN101451841A (en) * | 2008-12-31 | 2009-06-10 | 中国航天时代电子公司 | 1.55 mum wavelength high precision fiber gyroscope for eliminating dead zone |
| CN201479139U (en) * | 2009-08-14 | 2010-05-19 | 泉州市视通光电网络有限公司 | Erbium-doped fiber amplifier |
| CN101893802A (en) * | 2010-06-25 | 2010-11-24 | 上海华魏光纤传感技术有限公司 | Photo-sensing relay amplifier and method thereof |
| CN102361219A (en) * | 2011-08-10 | 2012-02-22 | 金海新源电气江苏有限公司 | Light source for distributed optical fiber temperature sensor |
| CN202949425U (en) * | 2012-12-14 | 2013-05-22 | 天津瑞利通科技有限公司 | Intelligent multi-fiber signal amplifier |
| CN103606806A (en) * | 2013-11-20 | 2014-02-26 | 中国电子科技集团公司第三十四研究所 | Distributed fiber Raman amplifier |
| CN104319607A (en) * | 2014-11-14 | 2015-01-28 | 武汉理工光科股份有限公司 | Laser light source based on two-stage amplification of Er-doped fibers |
| CN205377007U (en) * | 2015-12-27 | 2016-07-06 | 厦门彼格科技有限公司 | Erbium doped fiber amplifier of high -efficient pumping |
-
2016
- 2016-09-30 CN CN201610879755.2A patent/CN107884093A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2482113Y (en) * | 2001-07-06 | 2002-03-13 | 南京华盾网络技术有限公司 | Multi-mode erbium-doped optical fibre amplifier |
| CN2496195Y (en) * | 2001-08-16 | 2002-06-19 | 华为技术有限公司 | Light relay equipment |
| CN2850144Y (en) * | 2005-09-08 | 2006-12-20 | 中国计量学院 | Optical fibre Raman amplifying stimulated Brillouin scattering comb-shaped light source |
| CN101451841A (en) * | 2008-12-31 | 2009-06-10 | 中国航天时代电子公司 | 1.55 mum wavelength high precision fiber gyroscope for eliminating dead zone |
| CN201479139U (en) * | 2009-08-14 | 2010-05-19 | 泉州市视通光电网络有限公司 | Erbium-doped fiber amplifier |
| CN101893802A (en) * | 2010-06-25 | 2010-11-24 | 上海华魏光纤传感技术有限公司 | Photo-sensing relay amplifier and method thereof |
| CN102361219A (en) * | 2011-08-10 | 2012-02-22 | 金海新源电气江苏有限公司 | Light source for distributed optical fiber temperature sensor |
| CN202949425U (en) * | 2012-12-14 | 2013-05-22 | 天津瑞利通科技有限公司 | Intelligent multi-fiber signal amplifier |
| CN103606806A (en) * | 2013-11-20 | 2014-02-26 | 中国电子科技集团公司第三十四研究所 | Distributed fiber Raman amplifier |
| CN104319607A (en) * | 2014-11-14 | 2015-01-28 | 武汉理工光科股份有限公司 | Laser light source based on two-stage amplification of Er-doped fibers |
| CN205377007U (en) * | 2015-12-27 | 2016-07-06 | 厦门彼格科技有限公司 | Erbium doped fiber amplifier of high -efficient pumping |
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