The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 14, 2025
Filed:
Dec. 24, 2020
Nederlandse Organisatie Voor Toegepast-natuurwetenschappelijk Onderzoek Tno, The Hague, NL;
Amonics Limited, Hong Kong, CN;
Lun-Kai Cheng, Krimpen aan den Ijssel, NL;
Wai Sing Man, Hong Kong, CN;
Kwong Shing Tsang, Hong Kong, CN;
Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO, 's-Gravenhage, NL;
Amonics Limited, Kowloon, HK;
Abstract
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.