Optical coherence domain reflectometry by synthesis of coherence function: scanning the coherence function by phase modulation

Kazuo Hotate; Takashi Saida

doi:10.1117/12.187397

21 September 1994 Optical coherence domain reflectometry by synthesis of coherence function: scanning the coherence function by phase modulation

Kazuo Hotate, Takashi Saida

Author Affiliations +

Proceedings Volume 2294, Distributed and Multiplexed Fiber Optic Sensors IV; (1994) https://doi.org/10.1117/12.187397
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

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.

Citation Download Citation

Kazuo Hotate and Takashi Saida "Optical coherence domain reflectometry by synthesis of coherence function: scanning the coherence function by phase modulation", Proc. SPIE 2294, Distributed and Multiplexed Fiber Optic Sensors IV, (21 September 1994); https://doi.org/10.1117/12.187397

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