Abstract

We present the design, fabrication, and characterization of a dual polarization silicon-on-insulator (SOI) microring resonator (MRR) for simultaneous measurement of refractive index (RI) and temperature. Due to the different energy distribution of transverse electric (TE) and transverse magnetic (TM) modes for the SOI waveguide, the TE and TM polarizations can have quite different sensitivities toward the changes of ambient RI and temperature. By using a gapless asymmetric coupling section, TE0 mode and TM0 mode have been excited simultaneously in the MRR. We demonstrated the feasibility ofobtaining RI and temperature simultaneously with a single measurement, achieving a RI sensitivity of 104 nm/RIU (refractive index unit) and a temperature sensitivity of 78.7 pm/°C for TE0 mode and a RI sensitivity of 319 nm/RIU and a temperature sensitivity of 34.1 pm/°C for TM0 mode.

© 2016 Optical Society of America

Simultaneous measurement of refractive index and temperature using cascaded side-coupled photonic crystal nanobeam cavities

Penghao Liu and Yaocheng Shi
Opt. Express 25(23) 28398-28406 (2017)

Microring resonator based on polarization multiplexing for simultaneous sensing of refractive index and temperature on silicon platform

Xiangpeng Ou, Bo Tang, Peng Zhang, Bin Li, Fujun Sun, Ruonan Liu, Kai Huang, Ling Xie, Zhihua Li, and Yan Yang
Opt. Express 30(14) 25627-25637 (2022)

On-chip simultaneous sensing of humidity and temperature with a dual-polarization silicon microring resonator

Zuoqin Ding, Penghao Liu, Jingye Chen, Daoxin Dai, and Yaocheng Shi
Opt. Express 27(20) 28649-28659 (2019)

Dual-parameter sensing of refractive index and pressure by dual-polarization microresonators

Ping Zhang, Zhiruo Yan, and Chen Zhang
Appl. Opt. 60(35) 10849-10854 (2021)

Simultaneous refractive index and temperature measurement using nested fiber balloon rings

Junfa Zhao, Panpan Niu, Cheng Zhang, Hua Bai, Xiaodong Sun, and Zhibo Han
Appl. Opt. 57(23) 6835-6839 (2018)