Slope-assisted fast distributed sensing in optical fibers with arbitrary Brillouin profile
Year: 2011
Type: article
Abstract: We present a novel method, based on stimulated Brillouin scattering (SBS), for the simultaneous distributed measurement of fast strain variations along the entire length of the sensing fiber. A specially synthesized and adaptable probe wave is used to place the Brillouin interaction always on the slope of the local Brillouin gain spectrum, allowing a single pump pulse to sample fast strain variations along the full length of a fiber with an arbitrary distribution of the Brillouin frequency shift. In this early demonstration of the method, strain vibrations of a few hundred Hz are demonstrated, simultaneously measured on two different sections of an 85 m long fiber, having different static Brillouin shifts and with a spatial resolution of 1.5 m.
Source: Optics Express
DOI: 10.1364/oe.19.019845
Authors: Yair Peled, Avi Motil, Lior Yaron, Moshe Tur
Institution: Tel Aviv University
Language: English
Topic: Advanced Fiber Optic Sensors
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,270
OpenAlex ID: W2024818008