Abstract

We propose and experimentally demonstrate the feasibility of an integrated hybrid optical fiber sensing interrogation technique that efficiently combines distributed Raman-based temperature sensing with fiber Bragg grating (FBG)-based dynamic strain measurements. The proposed sensing system is highly integrated, making use of a common optical source/receiver block and exploiting the advantages of both (distributed and point) sensing technologies simultaneously. A multimode fiber is used for distributed temperature sensing, and a pair of FBGs in each discrete sensing point, partially overlapped in the spectral domain, allows for temperature-independent discrete strain measurements. Experimental results report a dynamic strain resolution of 7.8/Hz within a full range of 1700 με and a distributed temperature resolution of 1°C at 20 km distance with 2.7 m spatial resolution.

© 2012 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Hybrid Raman/fiber Bragg grating sensor for distributed temperature and discrete dynamic strain measurements

Iacopo Toccafondo, Mohammad Taki, Alessandro Signorini, Farhan Zaidi, Tiziano Nannipieri, Stefano Faralli, and Fabrizio Di Pasquale
Opt. Lett. 37(21) 4434-4436 (2012)

High-performance hybrid Raman/fiber Bragg grating fiber-optic sensor based on simplex cyclic pulse coding

M. Taki, F. Zaidi, I. Toccafondo, T. Nannipieri, A. Signorini, S. Faralli, and F. Di Pasquale
Opt. Lett. 38(4) 471-473 (2013)

Microwave interrogated large core fused silica fiber Michelson interferometer for strain sensing

Liwei Hua, Yang Song, Jie Huang, Xinwei Lan, Yanjun Li, and Hai Xiao
Appl. Opt. 54(24) 7181-7187 (2015)

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 (9)

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 (4)

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

Metrics

You do not have subscription access to this journal. Article level metrics 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