Wide range distance measurement over 50 km based on highly sensitive detection of the two-photon absorption photocurrent from a Si-APD

Wide range distance measurement over 50 km based on highly sensitive detection of the two-photon absorption photocurrent from a Si-APD

We studied a wide range distance measurement system based on highly sensitive detection of the two-photon absorption photocurrent from a Si-APD. The measurable distance was investigated theoretically and experimentally in detail. The experimental results agreed well with the theory. We demonstrated...

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Veröffentlicht in:Measurement science & technology 2015-02, Vol.26 (2), p.25205-7
Hauptverfasser: Tanaka, Yosuke, Kudo, Yoshimi, Hirasakura, Taiki, Kurokawa, Takashi
Format: Artikel
Sprache:eng
Schlagworte:
distance measurement
Fault location
fiber sensors
Fibers
Optical fibers
optical sensors
Photocurrent
Photoelectric effect
two-photon absorption
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Zusammenfassung:We studied a wide range distance measurement system based on highly sensitive detection of the two-photon absorption photocurrent from a Si-APD. The measurable distance was investigated theoretically and experimentally in detail. The experimental results agreed well with the theory. We demonstrated fiber fault location over a 50 km fiber. Breakpoints from 20 m to 50 km away in the optical fiber were successfully detected.
ISSN:0957-0233
1361-6501
DOI:10.1088/0957-0233/26/2/025205