Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Optical frequency-domain reflectometry for microbend sensor demodulation

Not Accessible

Your library or personal account may give you access

Abstract

The operation of an incoherent optical frequency-domain reflectometer for monitoring the continuous Rayleigh backscatter in a multimode optical fiber is presented. A simple but effective model to predict the value of beat frequencies arising in the system when excited by a linearly frequency-swept amplitude modulation has been developed. We have verified the model’s predictions by experimental measurement of beat frequencies and modulation depth indices of different lengths of standard graded-index multimode optical fiber. Demonstration of the system sensitivity to the detection of microbending loss is then discussed. In particular the detection of loss in a hydrogel-based water-sensing cable allows an alternative interrogation to conventional optical time-domain reflectometry techniques to be implemented. We demonstrate that the incoherent optical frequency-domain reflectometer is capable of detecting and locating sections of increased loss in a multimode optical fiber, and we discuss the fundamental limits on spatial resolution and dynamic range.

© 2000 Optical Society of America

Full Article  |  PDF Article
More Like This
Long-range vibration sensor based on correlation analysis of optical frequency-domain reflectometry signals

Zhenyang Ding, X. Steve Yao, Tiegen Liu, Yang Du, Kun Liu, Qun Han, Zhuo Meng, and Hongxin Chen
Opt. Express 20(27) 28319-28329 (2012)

Microbend fiber-optic sensor

Nicholas Lagakos, J. H. Cole, and J. A. Bucaro
Appl. Opt. 26(11) 2171-2180 (1987)

Dynamic optical frequency domain reflectometry

Dror Arbel and Avishay Eyal
Opt. Express 22(8) 8823-8830 (2014)

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 (20)

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

Tables (2)

You do not have subscription access to this journal. Article tables 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 (12)

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

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved