25 Million Sensing Measurements Per Second Using Quasi-Integer Ratio Time-Expanded φOTDR
27th International Conference on Optical Fiber Sensors(2022)
摘要
We demonstrate the detection of strain perturbations along a 500 m optical fiber with 2 cm spatial resolution and 1 kHz sampling frequency via quasi-integer-ratio time-expanded φOTDR, requiring less than 100 MHz photodetection bandwidth.
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关键词
sensing measurements,quasi-integer,time-expanded
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