Abstract

We propose a passive polarization depolarizer to overcome the polarization noise in Brillouin optical time domain reflectometry (BOTDR). We also give a theoretical analysis of the depolarizer. The depolarizer is highly stable and has small insertion loss. It is based on a Mach–Zehnder interference scheme and mainly consists of two polarization beam splitters and a piece of delay fiber. Experimental results show that the polarization noise can be reduced by 96% by the depolarizer, and the Brillouin frequency shift induced by heat can be accurately detected by BOTDR with this depolarizer. The pulse width is 30 ns and the length of the sensing fiber is 24 km, which is the longest reported distance achieved with such a short pulse for BOTDR, to the best of our knowledge.

©2012 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Coherent self-heterodyne detection of spontaneously Brillouin-scattered light waves in a single-mode fiber

Kaoru Shimizu, Tsuneo Horiguchi, Yahei Koyamada, and Toshio Kurashima
Opt. Lett. 18(3) 185-187 (1993)

Design of an InGaAsP/InP compact integrated optical depolarizer

Marwa Ragheb, Hatem Elrefaei, Diaa Khalil, and Omar A. Omar
Appl. Opt. 54(30) 9017-9024 (2015)

Polarization- and wavelength-independent SBS-based filters for high resolution optical spectrum measurement

Chen Xing, Changjian Ke, Ke Zhang, Zhen Guo, Yibo Zhong, and Deming Liu
Opt. Express 25(18) 20969-20982 (2017)

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 (5)

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 (11)

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