Single S-tapered fiber Mach-Zehnder interferometers.

  title={Single S-tapered fiber Mach-Zehnder interferometers.},
  author={Rui Yang and Yong-Sen Yu and Yang Xue and Chao Chen and Qi-Dai Chen and Hong-Bo Sun},
  journal={Optics letters},
  volume={36 23},
A fiber Mach-Zehnder interferometer (MZI) sensor, novel to our knowledge, based on a single "S"-like fiber taper has been fabricated via applying nonaxial pull in fiber tapering by a fusion splicer. The typical feature size of the structure has a length of 660 μm and the axial offset of 96 μm. This S fiber taper MZI has a refractive index (RI) sensitivity of 1590 nm/refractive index unit in the RI range of 1.409-1.425 and a strain sensitivity of about -60 pm/microstrain, which is 30 times… CONTINUE READING
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