In-Fiber Butt-Coupled Spherical Microcavity With Whispering Gallery Mode and Fabry-Perot Resonances

In-Fiber Butt-Coupled Spherical Microcavity With Whispering Gallery Mode and Fabry-Perot Resonances

Citation

Shi, L., Wang, Q., Jiang, L., Gao, Q., & Zhu, T. (2021). In-Fiber Butt-Coupled Spherical Microcavity With Whispering Gallery Mode and Fabry-Perot Resonances. IEEE Photonics Technology Letters, pp. 160. doi: 10.1109/LPT.2021.3075970.

Keywords

  • Optical fiber devices
  • Optical resonators
  • Fabry-Perot
  • Whispering gallery modes

Brief

The article proposes and experimentally demonstrates an integrated in-fiber coupling configuration that simultaneously excites Whispering Gallery Mode (WGM) and Fabry-Perot (FP) resonances within a single spherical microcavity using perpendicular butt-coupling from a fiber core.

Summary

The paper demonstrates an integrated in-fiber device where a spherical microcavity is butt-coupled to a fiber, allowing simultaneous excitation of Whispering Gallery Mode (WGM) and Fabry-Perot (FP) resonances by injecting light perpendicularly from the fiber core. This results in stable, tunable asymmetric (Fano-like) spectral lineshapes and offers higher fabrication tolerance compared to traditional evanescent coupling methods.

Origin: https://sci.bban.top/pdf/10.1109/lpt.2021.3075970.pdf#

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