Open AccessPhotonic crystal self-collimation sensor
Author(s) -
Yufei Wang,
HaiLing Wang,
QiKun Xue,
Wanhua Zheng
Publication year - 2012
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.012111
Subject(s) - collimated light , optics , refractive index , interferometry , photonic crystal , michelson interferometer , materials science , crosstalk , optoelectronics , laser , physics
A novel refractive index sensor based on the two dimensional photonic crystal folded Michelson interferometer employing the self-collimation effect is proposed and its performances are theoretically investigated. Two sensing areas are included in the sensor. Simulation results indicate the branch area is suitable for the small index variety range and fine detection, whereas the reflector area prone to the large index change range and coarse detection. Because of no defect waveguides and no crosstalk of signal, the sensor is desirable to perform monolithic integrated, low-cost, label-free real-time parallel sensing. In addition, a flexible design of self-collimation sensors array is demonstrated.