System and method for optical strain measurement

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United States of America

PATENT NO 12196630
APP PUB NO 20230029510A1
SERIAL NO

17789138

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Abstract

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A position dependent strain measurement system detected strain as a function of position in an optical sensing fiber using an interferometer having an input coupled to the first end of the optical sensing fiber. An electronic phase measuring sub-system is coupled to an output of the interferometer. The electronic phase measuring sub-system defines a usable optical intensity range of input light of the interferometer, wherein the electronic phase measuring sub-system is capable of measuring the phase of the input light. An optically pumped optical fiber amplifier is coupled between the first end of the optical sensing fiber and the input of the interferometer in series with an electrically pumped semi-conductor optical amplifier. The electrically pumped semi-conductor optical amplifier having a non-linear intensity amplification range that overlaps with the usable optical intensity range. The optically pumped optical fiber amplifier is configured to amplify an intensity of backscattered light from the optical sensing fiber into the non-linear intensity amplification range.

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Patent Owner(s)

Patent OwnerAddress
NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNOANNA VAN BUERENPLEIN 1 'S-GRAVENHAGE 2595 DA
AMONICS LIMITED14F LEE KING INDUSTRIAL BUILDING 12 NG FONG STREET SAN PO KONG KOWLOON

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cheng, Lun-Kai Krimpen aan den Ijssel, NL 2 3
Man, Wai Sing Hong Kong, CN 2 3
Tsang, Kwong Shing Hong Kong, CN 2 1

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