ADF Fibercom limited     Mailbox login   中文
Contact number:86-0755-26831255、26684981
Home About us Products News Support Contact us
Product list  
Free space Isolator
Isolator & Faraday mirror
Fused Fiber Optic Coupler
Micro optical product
Optical fiber circulator
Hybrid/Components For EDFA
Optical switch
Polarization Maintaining(PM)
PLC Splitter
Standard Wavelength Reference
Contact us

Address:3/F,A Block , Hengtongfa Industrial Park, Tangtou Industrial Park, Shiyan Town, Bao’an District, Shenzhen,PRC




location: Home > Support >
Distributed optical fiber temperature measurement solution
Editor:admin  Clicks:  Update time:2017-04-13 14:17
Working principle
Distributed optical fiber temperature sensor is a scattering type optical fiber sensor, optical pulse by the backscattered light including Rayleigh scattering, Raman scattering and Brillouin scattering, so fiber optic sensor including the use of Rayleigh scattering OTDR using Brillouin scattering B-OTDR, B-OTDA (Brillouin Optical Time-Domain Analysis, B-OTDA) and Raman scattering R-OTDR.
Usually the DTS temperature measurement principle and positioning principle is R-OTDR, is the use of Raman scattering, the working principle of optical pulse in optical fiber Raman scattering will occur, the backward scattered light to spread to the starting end of each fiber, back propagation light scattering corresponds to a scattering point of the optical fiber. Collect and analyze the information back to the time and intensity of scattering light can get the corresponding position and temperature information.
Distributed optical fiber temperature measurement system is mainly composed of three parts: temperature measuring machine, temperature sensing fiber and temperature demodulation software. The temperature measuring machine mainly comprises a laser, a 1*3 wavelength division multiplexer, an avalanche photodiode module, an amplifying module, a data acquisition module and a thermostatic device. The working principle of a laser pulse pulse semiconductor laser, occurs in optical fiber Raman backscattering, Stocks and Anti-Stocks respectively by Raman scattering light, avalanche photodiode is converted to a voltage signal amplified by high speed AD converter sampling intensity information by temperature demodulation software demodulation of the optical fiber temperature information integration.

Pre:Principle of fiber Bragg grating

Next:Optical fiber current transformer solution

3 port 1310/1490/1550 Micro-Optical Wav
4,8,16-channel CWDM Module
Polarization Maintaining Optical Circula
1480/1550nm WDM-Tap Coupler-Isolator Hyb
200GHz DWDM Module (4,8,16 channel)
Standard Wavelength Reference Table

Development status of laser industry
All fiber fluorescence temperature measu
Optical fiber current transformer soluti
Construction of TDLAS detection system
DFB Laser
Principle of fiber Bragg grating
COPYRIGHT © 2017-2018 ADF Fibercom limited ProfessionalPartial productCirculatorMultiplexer.
Address: 3/F,A Block , Hengtongfa Industrial Park, Tangtou Industrial Park, Shiyan Town, Bao’an District, Shenzhen,PRC TEL:86-0755-26831255   FAX:86-0755-26676421  SUPPORT:TIANLANG