OPTICAL FIBER STRAIN MEASURING APPARATUS

PROBLEM TO BE SOLVED: To provide an optical fiber strain measuring apparatus which reduces measurement errors caused by incoherent components characteristic of an optical fiber strain measuring apparatus using double pulses and improves measurement accuracy. SOLUTION: In the optical fiber strain mea...

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Bibliographische Detailangaben
1. Verfasser:	OISHI KAZUJI
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHYSICS TARIFF METERING APPARATUS TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an optical fiber strain measuring apparatus which reduces measurement errors caused by incoherent components characteristic of an optical fiber strain measuring apparatus using double pulses and improves measurement accuracy. SOLUTION: In the optical fiber strain measuring apparatus for detecting a peak frequency on the basis of a periodic spectrum by double pulsed through the use of Brillouin scattering light in an optical fiber, an incoherent component removal means for removing incoherent scattering signals caused by front pulses and rear pulses of the double pulses is provided for a proceeding stage of a peak frequency detection means. COPYRIGHT: (C)2011,JPO&INPIT