title: Multiplexed Simultaneous High Sensitivity Sensors with High-Order Mode Based on the Integration of Photonic Crystal 1 × 3 Beam Splitter and Three Different Single-Slot PCNCs.
abstract: We simulated an efficient method for the sensor array of high-sensitivity single-slot photonic crystal nanobeam cavities (PCNCs) on a silicon platform. With the combination of a well-designed photonic crystal waveguide (PhCW) filter and an elaborate single-slot PCNC, a specific high-order resonant mode was filtered for sensing. A 1 × 3 beam splitter carefully established was implemented to split channels and integrate three sensors to realize microarrays. By applying the three-dimensional finite-difference-time-domain (3D-FDTD) method, the sensitivities calculated were S₁ = 492 nm/RIU, S₂ = 244 nm/RIU, and S₃ = 552 nm/RIU, respectively. To the best of our knowledge, this is the first multiplexing design in which each sensor cite features such a high sensitivity simultaneously.
authors.affiliation: State Key Laboratory of Information Photonics and Optical Communications, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China. zjian0304@bupt.edu.cn.
authors.forename: Jian
authors.initials: J
authors.lastname: Zhou
authors.affiliation: State Key Laboratory of Information Photonics and Optical Communications, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China. hltnet@163.com.
authors.forename: Lijun
authors.initials: L
authors.lastname: Huang
authors.affiliation: State Key Laboratory of Information Photonics and Optical Communications, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China. 18630453127@163.com.
authors.forename: Zhongyuan
authors.initials: Z
authors.lastname: Fu
authors.affiliation: State Key Laboratory of Information Photonics and Optical Communications, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China. sunny_fujun@163.com.
authors.forename: Fujun
authors.initials: F
authors.lastname: Sun
authors.affiliation: State Key Laboratory of Information Photonics and Optical Communications, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China. hptian@bupt.edu.cn.
authors.forename: Huiping
authors.initials: H
authors.lastname: Tian
keywords: filter; multiplexing; optical sensing and sensor; photonic crystal; resonators