High-sensitivity and wide-range optical sensor based on three cascaded ring resonators.
We demonstrate a three cascaded micro-ring resonators based refractive index optical sensor with a high sensitivity of 5866 nm/RIU, the measurement range of which is significantly improved 24.7 times comparing with the traditional two cascaded micro-ring resonators.
Yong
Y
Liu
Yang
Y
Li
Mingyu
M
Li
Jian-Jun
JJ
He