Measurement of Brillouin Gain Spectrum Distribution along an Optical Fiber Using a Correlation-Based Technique--Proposal, Experiment and Simulation--

Kazuo HOTATE  Takemi HASEGAWA  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E83-C   No.3   pp.405-412
Publication Date: 2000/03/25
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Optical Fiber Sensors)
Category: Distributed Sensing
Keyword: 
Brillouin scattering,  optical fiber measurements,  strain measurement,  temperature measurement,  

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Summary: 
A correlation-based technique for measuring Brillouin gain spectrum distribution along an optical fiber is proposed, which employs frequency-modulated pump and probe lightwaves. The spatial-resolution of about 40 cm is demonstrated, which cannot be realized by the conventional pulse-based technique.