Schematics of the transmissive RI sensing. A narrow spectral source is normally launched into a PhC consisting of dielectric rods arranged in rectangular lattice, and the...
Impact Statement:We propose a new scheme of RI sensing by utilizing frequency-sensitive responses of 2-D photonic crystals. Small changes in ambient RI are sensed by measuring the transmi...Show More
Abstract:
In this paper, we propose a new scheme of refractive index (RI) sensing, which utilizes frequency-sensitive responses of 2-D photonic crystals. Specifically, the 2-D phot...Show MoreMetadata
Impact Statement:
We propose a new scheme of RI sensing by utilizing frequency-sensitive responses of 2-D photonic crystals. Small changes in ambient RI are sensed by measuring the transmission rate of a narrow spectral source. Comparison of the RI sensors is based on high-Q micro-cavities for which bulky optical spectrum analyzers are required, and the major advantage of our design is that all the essential components can be compactly integrated.
Abstract:
In this paper, we propose a new scheme of refractive index (RI) sensing, which utilizes frequency-sensitive responses of 2-D photonic crystals. Specifically, the 2-D photonics crystals consist of dielectric rods arranged in rectangular lattice and support frequency-sensitive supercollimation (SC). Small changes in ambient RI are sensed by measuring transmission rate of a narrow spectral source. This RI sensing scheme exploits the sensitive dispersion properties around the SC frequency: Both reflection and beam diffraction are enhanced in response to a slight increase of ambient RI. Operation and performance of the transmissive RI sensing are demonstrated by finite-difference time-domain (FDTD) simulations. The major advantage of our design is that all the essential components can be compactly integrated, which makes it attractive for a number of applications, such as hand-held equipment and distributed sensor networks.
Schematics of the transmissive RI sensing. A narrow spectral source is normally launched into a PhC consisting of dielectric rods arranged in rectangular lattice, and the...
Published in: IEEE Photonics Journal ( Volume: 8, Issue: 5, October 2016)
Funding Agency:
College of Electronic Science and Technology, Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, China
Department of Illuminating Engineering and Light Sources, School of Information Science and Engineering, Fudan University, Shanghai, China
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, China
College of Electronic Science and Technology, Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, China
Department of Illuminating Engineering and Light Sources, School of Information Science and Engineering, Fudan University, Shanghai, China
Contents College of Electronic Science and Technology, Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, China
Department of Illuminating Engineering and Light Sources, School of Information Science and Engineering, Fudan University, Shanghai, China
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, China
College of Electronic Science and Technology, Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, China
Department of Illuminating Engineering and Light Sources, School of Information Science and Engineering, Fudan University, Shanghai, China