Termination determination device and termination determination method

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United States of America Patent

PATENT NO 12107624
APP PUB NO 20230231625A1
SERIAL NO

18010311

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An object of the present invention is to enable identification of a reflection signal from a terminal portion of an optical fiber to be measured where a reflection signal caused by multiple reflection appears in an OTDR waveform in a mode in which an OTDR and the optical fiber to be measured are connected at a bent portion. The reflection signal caused by multiple reflection inevitably propagates through a distance equal to a distance between true reflection points more than the other reflection point, because of multiple reflection. Therefore, a distance between the reflection signal and another reflection signal is inevitably coincident with a distance between the other reflection signals. In contrast, in a case of a reflection signal from a terminal portion of the optical fiber, the distance between the reflection signal and another reflection signal is not coincident with the distance between the other reflection signals.

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Patent Owner(s)

Patent OwnerAddress
NIPPON TELEGRAPH AND TELEPHONE CORPORATIONTOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hirota, Hidenobu Musashino, JP 34 13
Iida, Hiroyuki Musashino, JP 75 406
Uematsu, Takui Musashino, JP 24 13

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