Design and optimization of liquid core optical ring resonator for refractive index sensing

Nai Lin, Lan Jiang, Sumei Wang, Hai Xiao, Yongfeng Lu, Hai Lung Tsai

Research output: Contribution to journalArticle

10 Scopus citations


This study performs a detailed theoretical analysis of refractive index (RI) sensors based on whispering gallery modes (WGMs) in liquid core optical ring resonators (LCORRs). Both TE-and TM-polarized WGMs of various orders are considered. The analysis shows that WGMs of higher orders need thicker walls to achieve a near-zero thermal drift, but WGMs of different orders exhibit a similar RI sensing performance at the thermostable wall thicknesses. The RI detection limit is very low at the thermostable thickness. The theoretical predications should provide a general guidance in the development of LCORR-based thermostable RI sensors.

Original languageEnglish (US)
Pages (from-to)3615-3621
Number of pages7
JournalApplied optics
Issue number20
Publication statusPublished - Jul 10 2011


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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