Abstract

A novel algorithm for attenuation calibration in distributed temperature sensors (DTS) based on Raman scattering is presented and experimentally demonstrated, for the first time to the best of our knowledge. Numerical simulation is implemented to explore the signal distribution of Stokes and anti-Stokes lights along sensing fiber with the traditional DTS configuration. The proposed attenuation calibration method is to process the directly detected signal related to the temperature profile and calculate the calibration coefficient to maintain the linearity of temperature measurement and its uniformity along the whole fiber. The experimental results indicate that the attenuation issue of the signal along the sensing fiber is solved simply and efficiently. Simultaneously, a good linearity of the temperature measurement is achieved and the sensitivity remains uniform in the measuring range. The enhanced DTS system reduces the maximal error in temperature measurement from 18.01°C to 1.56°C along an approximate 10 km sensing fiber. The simplicity, validity, and reliability of the proposed method make the DTS system a better candidate in practical applications without the extra requirements of the existing system configuration.

© 2020 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
High-accuracy distributed temperature measurement using difference sensitive-temperature compensation for Raman-based optical fiber sensing

Jian Li, Qian Zhang, Yang Xu, Mingjiang Zhang, Jianzhong Zhang, Lijun Qiao, Mehjabin Mohiuddin Promi, and Tao Wang
Opt. Express 27(25) 36183-36196 (2019)

Ambient condition desensitization of a fiber Raman temperature sensing system based on a dynamic sampling-correction scheme

Miao Yu, Ye Liu, Hong-Liang Cui, and Tianying Chang
Appl. Opt. 54(15) 4823-4827 (2015)

Novel auto-correction method in a fiber-optic distributed-temperature sensor using reflected anti-Stokes Raman scattering

Dusun Hwang, Dong-Jin Yoon, Il-Bum Kwon, Dae-Cheol Seo, and Youngjoo Chung
Opt. Express 18(10) 9747-9754 (2010)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (10)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription