title: Design and optimization of liquid core optical ring resonator for refractive index sensing.
abstract: 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.
authors: Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, 100081, Beijing, China.
authors: Nai
authors: N
authors: Lin
authors: Lan
authors: L
authors: Jiang
authors: Sumei
authors: S
authors: Wang
authors: Hai
authors: H
authors: Xiao
authors: Yongfeng
authors: Y
authors: Lu
authors: Hai-Lung
authors: HL
authors: Tsai