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Proceedings Paper

Optical coherence domain reflectometry by synthesis of coherence function: scanning the coherence function by phase modulation
Author(s): Kazuo Hotate; Takashi Saida
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Paper Abstract

A new reflectometry, phase-modulating optical coherence domain reflectometry by synthesis of the coherence function (p-OCDR), is proposed in this paper. The optical coherence function synthesized by direct frequency modulation of a laser diode is scanned by phase modulation of a reference lightwave in an interferometer. This method has no mechanical moving part, and is easy to adjust a spatial resolution and a measuring range in optical circuits under test. Consideration of the influence of unideal factors to the performance of p-OCDR tells us that p- OCDR can realize a higher performance more easily than usual OCDR. Additionally p-OCDR can compensate a nonlinearity in the direct frequency modulation by the phase modulation. Finally basic experiments of p-OCDR are successfully carried out.

Paper Details

Date Published: 21 September 1994
PDF: 10 pages
Proc. SPIE 2294, Distributed and Multiplexed Fiber Optic Sensors IV, (21 September 1994); doi: 10.1117/12.187397
Show Author Affiliations
Kazuo Hotate, Univ. of Tokyo (Japan)
Takashi Saida, Univ. of Tokyo (Japan)

Published in SPIE Proceedings Vol. 2294:
Distributed and Multiplexed Fiber Optic Sensors IV
Alan D. Kersey; John P. Dakin, Editor(s)

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