Coherent Optical Frequency Domain Reflectometry for a Long Single-Mode Optical Fiber Using a Coherent Lightwave Source and an External Phase Modulator

Kohji Tsuji; Kaoru Shimizu; Tsuneo Horiguchi; Yahei Koyamada

doi:10.1109/68.393212

Coherent Optical Frequency Domain Reflectometry for a Long Single-Mode Optical Fiber Using a Coherent Lightwave Source and an External Phase Modulator

Kohji Tsuji, Kaoru Shimizu, Tsuneo Horiguchi, Yahei Koyamada

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

Coherent optical frequency domain reflectometry (C-OFDR) is demonstrated for a long single-mode optical fiber at a wavelength of 1.55 µm by using a highly coherent lightwave source and an electrooptical (EO) external phase modulator. Rayleigh backscattering and Fresnel reflection from a 16.4-km optical fiber are observed when the modulation frequency is swept from 4 GHz to 8 GHz for 40 ms. The insertion of an optical fiber delay line in a probe lightwave path makes it possible to distinguish the Rayleigh backscattering profile due to the first-order modulation sideband in the phase-modulated lightwave from those due to the higher order sidebands. A spatial resolution of better than 100 m is achieved for two neighboring Fresnel reflectors located near the far end of the test fiber.

Original language	English
Pages (from-to)	804-806
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	7
Issue number	7
DOIs	https://doi.org/10.1109/68.393212
Publication status	Published - 1995 Jul

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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title = "Coherent Optical Frequency Domain Reflectometry for a Long Single-Mode Optical Fiber Using a Coherent Lightwave Source and an External Phase Modulator",

abstract = "Coherent optical frequency domain reflectometry (C-OFDR) is demonstrated for a long single-mode optical fiber at a wavelength of 1.55 µm by using a highly coherent lightwave source and an electrooptical (EO) external phase modulator. Rayleigh backscattering and Fresnel reflection from a 16.4-km optical fiber are observed when the modulation frequency is swept from 4 GHz to 8 GHz for 40 ms. The insertion of an optical fiber delay line in a probe lightwave path makes it possible to distinguish the Rayleigh backscattering profile due to the first-order modulation sideband in the phase-modulated lightwave from those due to the higher order sidebands. A spatial resolution of better than 100 m is achieved for two neighboring Fresnel reflectors located near the far end of the test fiber.",

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AU - Tsuji, Kohji

AU - Shimizu, Kaoru

AU - Horiguchi, Tsuneo

AU - Koyamada, Yahei

PY - 1995/7

Y1 - 1995/7

N2 - Coherent optical frequency domain reflectometry (C-OFDR) is demonstrated for a long single-mode optical fiber at a wavelength of 1.55 µm by using a highly coherent lightwave source and an electrooptical (EO) external phase modulator. Rayleigh backscattering and Fresnel reflection from a 16.4-km optical fiber are observed when the modulation frequency is swept from 4 GHz to 8 GHz for 40 ms. The insertion of an optical fiber delay line in a probe lightwave path makes it possible to distinguish the Rayleigh backscattering profile due to the first-order modulation sideband in the phase-modulated lightwave from those due to the higher order sidebands. A spatial resolution of better than 100 m is achieved for two neighboring Fresnel reflectors located near the far end of the test fiber.

AB - Coherent optical frequency domain reflectometry (C-OFDR) is demonstrated for a long single-mode optical fiber at a wavelength of 1.55 µm by using a highly coherent lightwave source and an electrooptical (EO) external phase modulator. Rayleigh backscattering and Fresnel reflection from a 16.4-km optical fiber are observed when the modulation frequency is swept from 4 GHz to 8 GHz for 40 ms. The insertion of an optical fiber delay line in a probe lightwave path makes it possible to distinguish the Rayleigh backscattering profile due to the first-order modulation sideband in the phase-modulated lightwave from those due to the higher order sidebands. A spatial resolution of better than 100 m is achieved for two neighboring Fresnel reflectors located near the far end of the test fiber.

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Coherent Optical Frequency Domain Reflectometry for a Long Single-Mode Optical Fiber Using a Coherent Lightwave Source and an External Phase Modulator

Abstract

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