Abstract

A novel, highly sensitive integrated sensor based on a silicon-on-insulator microring resonator is proposed and experimentally demonstrated. To achieve a fast-response and cost-effective sensing system, the new structure establishes a linear amplitude comparison sensing function (ACSF) by monitoring the optical powers from both the through port and drop port of an add–drop microring resonator simultaneously, where the contrast of the two ports eliminates the effect of unexpected power fluctuation of the input laser on sensor performance. A highly enhanced linear relationship between the resonant wavelength shift and the ACSF value is achieved with an R-squared value over 0.99. A proof-of-concept experiment for temperature sensing demonstrates an almost constant ACSF with only $\pm 0.9\%$ discrepancy, while the laser power is varied between 0 dBm and $-7\mathrm{dBm}$.

© 2017 Optical Society of America

Optofluidic biomolecule sensors based on a-Si:H microrings embedded in silicon–glass microchannels

T. Lipka, L. Moldenhauer, L. Wahn, and H. K. Trieu
Opt. Lett. 42(6) 1084-1087 (2017)

High-speed optical sensor interrogator with a silicon-ring-resonator-based thermally tunable filter

Hyun-Tae Kim and Miao Yu
Opt. Lett. 42(7) 1305-1308 (2017)

Temperature-insensitive optical sensors based on two cascaded identical microring resonators

Guoshuai Su, Mingyu Li, Zhiping Yang, Jiayi Xie, Yuxia Song, and Jian-Jun He
Opt. Lett. 47(17) 4327-4330 (2022)

Channel-selective wavelength conversion of quadrature amplitude modulation signal using a graphene-assisted silicon microring resonator

Yun Long, Yi Wang, Xiao Hu, Mengxi Ji, Li Shen, Andong Wang, and Jian Wang
Opt. Lett. 42(4) 799-802 (2017)

High-sensitivity optical sensors based on cascaded reflective MZIs and microring resonators

H. H. Zhu, Y. H. Yue, Y. J. Wang, M. Zhang, L. Y. Shao, J. J. He, and M. Y. Li
Opt. Express 25(23) 28612-28618 (2017)