NDLI: Performance improvement for long-range BOTDR sensing system based on high extinction ratio modulator

Content Provider	IET Digital Library
Author	Zhang, Yixin Wu, Xuelin Ying, Zhoufeng Zhang, Xuping
Abstract	The leakage light of an electro-optic modulator induced by its finite extinction ratio (ER) may degrade the performance of the Brillouin optical time domain reflectometer (BOTDR) sensing system, especially for long distance measurement. A novel configuration of a modulator based on a synchronous optical switch is presented. Experimental results have shown that the performance of the sensing system can be obviously improved with the proposed high ER modulator. At the end of a 48.5 km sensing fibre, the maximum uncertainty of temperature measurement has been reduced from 5.2 to 0.8°C with a 25 m spatial resolution after making an improvement in the ER from 35 to 65 dB.
Starting Page	1014
Ending Page	1016
Page Count	3
ISSN	00135194
Volume Number	50
e-ISSN	1350911X
Issue Number	Issue 14, Jul (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/50/14
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2014.0909
Journal	Electronics Letters
Publisher Date	2014-06-30
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Brillouin Optical Time Domain Reflectometer Sensing System Distance 48.5 Km Distance Measurement Electro optic Modulator Electro optical Device Electro-optical Modulation Electro-optical Switches ER Modulator Fibre Gyros Fibre Optic Sonsor Finite Extinction Ratio Gain 35 DB to 65 DB High Extinction Ratio Modulator Long Distance Measurement Long-range BOTDR Sensing System Measurement Uncertainty Optical Beam Modulators Optical Fibre Testing And Measurement of Fibre Parameter Optical Refractometry And Reflectometry Optical Time-domain Reflectometry Optical Variables Measurement Reflect Meters Sensing Fibre Spatial Variables Measurement Synchronous Optical Switch Temperature 5.2 DegC to 0.8 DegC Temperature Measurement Thermal Variables Measurement Thermometry
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Strain variation measurement with short-time Fourier transform-based Brillouin optical time-domain reflectometry sensing system

Low-cost Brillouin optical correlation-domain reflectometry involving merely one fibre amplifier

Distributed temperature sensing based on slope-assisted Brillouin optical correlation-domain reflectometry with over 10 km measurement range

Investigation of radiation recovery effect on sensing fibre in BOTDR

Sensing change

Measurement of temperature and strain simultaneously with high spatial resolution for a long sensing range

Optical fibre intrusion detection method based on Lefevre-loop and bidirectional polarisation optical time-domain reflectometer-C technique

Reply: New class of high-performance PTAT current sources

Fibre-tree network for water-surface ranging using an optical time-domain reflectometry technique

Performance improvement for long-range BOTDR sensing system based on high extinction ratio modulator

Similar Documents

Strain variation measurement with short-time Fourier transform-based Brillouin optical time-domain reflectometry sensing system

Low-cost Brillouin optical correlation-domain reflectometry involving merely one fibre amplifier

Distributed temperature sensing based on slope-assisted Brillouin optical correlation-domain reflectometry with over 10 km measurement range

Investigation of radiation recovery effect on sensing fibre in BOTDR

Sensing change

Measurement of temperature and strain simultaneously with high spatial resolution for a long sensing range

Optical fibre intrusion detection method based on Lefevre-loop and bidirectional polarisation optical time-domain reflectometer-C technique

Reply: New class of high-performance PTAT current sources

Fibre-tree network for water-surface ranging using an optical time-domain reflectometry technique

Performance improvement for long-range BOTDR sensing system based on high extinction ratio modulator