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Remote Calibration of Length Standards Using 47-km-Long Optical Fiber Network

2005; Institute of Physics; Volume: 44; Issue: 7L Linguagem: Inglês

10.1143/jjap.44.l970

1347-4065

Hirokazu Matsumoto, Kaoru Sasaki, Akiko Hirai,

Advanced Fiber Optic Sensors

The information of practical length standards is transmitted through 47-km-long optical fiber network between Tsuchiura city and Kashiwa city in Japan. Interference fringes are generated when the optical path difference of a low-coherence interferometer in the Tsuchiura relay station compensates that in the Kashiwa station. End standards of 100 mm length in the Kashiwa station are calibrated remotely within a standard deviation of 118 nm with the reference standards in the Tsuchiura station.