Refractive index sensitivity characteristics near the dispersion turning point of the multimode microfiber-based Mach-Zehnder interferometer.

@article{Luo2015RefractiveIS,
  title={Refractive index sensitivity characteristics near the dispersion turning point of the multimode microfiber-based Mach-Zehnder interferometer.},
  author={Haipeng Luo and Qinzhen Sun and Xiaolei Li and Zhijun Yan and Yanpeng Li and Deming Liu and Lin Zhang},
  journal={Optics letters},
  year={2015},
  volume={40 21},
  pages={5042-5}
}
The turning point of the refractive index (RI) sensitivity based on the multimode microfiber (MMMF) in-line Mach-Zehnder interferometer (MZI) is observed. By tracking the resonant wavelength shift of the MZI generated between the HE(11) and HE(12) modes in the MMMF, the surrounding RI (SRI) could be detected. Theoretical analysis demonstrates that the RI sensitivity will reach ±∞ on either side of the turning point due to the group effective RI difference (G) approaching zero. Significantly… CONTINUE READING

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