PCF-Based Fabry–Pérot Interferometric Sensor for Strain Measurement at High Temperatures

  title={PCF-Based Fabry–P{\'e}rot Interferometric Sensor for Strain Measurement at High Temperatures},
  author={Ming Deng and Chang-Ping Tang and Tao Zhu and Yun Jiang Rao},
  journal={IEEE Photonics Technology Letters},
We report a simple and robust all-fiber in-line Fabry-Pérot interferometer (FPI) with an air bubble cavity, which is fabricated by directly splicing a multimode photonic crystal fiber (MPCF) to a conventional single-mode fiber with a commercialized fusion splicer. The air microbubble inserted between the two fibers has two smooth glass-air interfaces separated by a distance L as two reflective mirrors of the FPI. Due to the big air holes in the cladding of MPCF and its large numerical aperture… CONTINUE READING
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