Abstract

A dual-source distributed optical fiber sensor system with combined Raman and Brillouin scatterings is designed for simultaneous temperature and strain measurements. The optimal Raman and Brillouin signals can be separately obtained by adjusting the powers of the two sources using an optical switch. The temperature and strain can be determined by processing the optimal Raman and Brillouin signals. The experimental result shows that 1.7 °C temperature resolution and 60-με strain resolution can be achieved at a 24.7-km distance.

© 2012 Chinese Optics Letters

Simultaneous distributed strain and temperature measurement

Jeff Smith, Anthony Brown, Michael DeMerchant, and Xiaoyi Bao
Appl. Opt. 38(25) 5372-5377 (1999)

Study on the simultaneous distributed measurement of temperature and strain based on Brillouin scattering in dispersion-shifted fiber

Liwen Sheng, Ligong Li, Lei Liu, Leijun Hu, Ming Yuan, and Jisong Yan
OSA Continuum 3(8) 2078-2085 (2020)

Polarimetric distributed feedback fiber laser sensor for simultaneous strain and temperature measurements

Oliver Hadeler, Erland Rønnekleiv, Morten Ibsen, and Richard I. Laming
Appl. Opt. 38(10) 1953-1958 (1999)

Distributed-feedback fiber laser sensor for simultaneous strain and temperature measurements operating in the radio-frequency domain

O. Hadeler, M. Ibsen, and M. N. Zervas
Appl. Opt. 40(19) 3169-3175 (2001)

Simultaneous temperature and strain measurement with combined spontaneous Raman and Brillouin scattering

M. N. Alahbabi, Y. T. Cho, and T. P. Newson
Opt. Lett. 30(11) 1276-1278 (2005)