Acta Optica Sinica, Volume. 18, Issue 2, 253(1998)
A Distributed Interference Fiber-Optic Sensor System for Long Distance Measurement
A novel distributed interference fiber optic sensor system for long distance measurement is proposed based on Machelson interferometer using a modulated laser (Frequency modulated continuous wave). By incorporating an optical loop with a frequency shifter in the reference optical path of Machelson interferometer, the measurement range of the sensor system has been increased 4 times and reached 48 meters.
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[in Chinese], [in Chinese], [in Chinese]. A Distributed Interference Fiber-Optic Sensor System for Long Distance Measurement[J]. Acta Optica Sinica, 1998, 18(2): 253