Abstract

The Brillouin collision rate in a Brillouin optical correlation domain analysis fiber sensor is ultimately limited by the sensing fiber length, which restricts the single point sampling rate in dynamic strain measurement. Here, a time-gated long-phase-sequence-coded pump method is proposed to overcome this limitation. The Brillouin collision rate is limited only by the phonon lifetime, since it governs the building and decaying time of the acoustic wave. For a sensing fiber length of ${\sim}{{1}}\;{\rm{km}}$, a Brillouin collision rate as high as 1 MHz is experimentally realized. This further results in a single-point sampling rate of 1 kHz for dynamic strain sensing with a spatial resolution of ${\sim}{{2}}\;{\rm{cm}}$ and a measurement uncertainty of ${\lt} {33.5}\;{\rm{\unicode{x00B5} \varepsilon}}$.

© 2021 Optical Society of America

Full Article  |  PDF Article
More Like This
Dynamic strain measurement by a single-slope-assisted chaotic Brillouin optical correlation-domain analysis

Yahui Wang, Le Zhao, Mingjiang Zhang, Jianzhong Zhang, Lijun Qiao, Tao Wang, Shaohua Gao, Qian Zhang, and Yuncai Wang
Opt. Lett. 45(7) 1822-1825 (2020)

Fast Brillouin optical time-domain reflectometry using the optical chirp chain reference wave

Dexin Ba, Benzhang Wang, Tianfu Li, Yijia Li, Dengwang Zhou, and Yongkang Dong
Opt. Lett. 45(19) 5460-5463 (2020)

Distributed and dynamic strain sensing with high spatial resolution and large measurable strain range

Li Zhang, Zhisheng Yang, Nachum Gorbatov, Roy Davidi, Malak Galal, Luc Thévenaz, and Moshe Tur
Opt. Lett. 45(18) 5020-5023 (2020)

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 Optica member, or as an authorized user of your institution.

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

Supplementary Material (1)

NameDescription
Supplement 1       The derivation of Eq. (3); the experimental setup and results about static strain test.

Data Availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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 Optica member, or as an authorized user of your institution.

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

Figures (5)

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

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

Equations (3)

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

Contact your librarian or system administrator
or
Login to access Optica 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 Optica member, or as an authorized user of your institution.

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