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| Título: |
PHASE-SENSITIVE CORRELATION OPTICAL TIME-DOMAIN REFLECTOMETER USING QUANTUM PHASE NOISE OF LASER LIGHT |
| Autores: |
RODOLFO MARTINEZ MANUEL |
| Fecha: |
2015-11-11 |
| Publicador: |
CIO |
| Fuente: |
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| Tipo: |
info:eu-repo/semantics/article |
| Tema: |
info:eu-repo/classification/cti/1 |
| Descripción: |
We propose and experimentally demonstrate a simple approach
to realize a phase-sensitive correlation optical time-domain reflectometer
(OTDR) suitable for detection and localization of dynamic perturbations
along a single-mode optical fiber. It is based on the quantum phase
fluctuations of a coherent light emitted by a telecom DFB diode laser. Truly
random probe signals are generated by an interferometer with the optical
path difference exceeding the coherence length of the laser light. Specklelike
OTDR traces were obtained by calculating cross-correlation functions
between the probe light and the light intensity signals returned back from
the sensing fiber. Perturbations are detected and localized by monitoring
time variations of correlation amplitude along the fiber length. Results of
proof-of-concept experimental testing are presented using an array of ultralow-reflectivity
fiber Bragg gratings as weak reflectors. |
| Idioma: |
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