Next Article in Journal
Investigation of Matlab® as Platform in Navigation and Control of an Automatic Guided Vehicle Utilising an Omnivision Sensor
Previous Article in Journal
Hand-Writing Motion Tracking with Vision-Inertial Sensor Fusion: Calibration and Error Correction
Article Menu

Export Article

Open AccessArticle
Sensors 2014, 14(9), 15658-15668; doi:10.3390/s140915658

Design Low Crosstalk Ring-Slot Array Structure for Label-Free Multiplexed Sensing

1
State Key Laboratory of Information Photonics and Optical Communications, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
2
Department of Physics and Information Engineering, Huaihua University, Huaihua 418008, China
*
Authors to whom correspondence should be addressed.
Received: 19 June 2014 / Revised: 14 August 2014 / Accepted: 20 August 2014 / Published: 25 August 2014
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [1405 KB, uploaded 25 August 2014]   |  

Abstract

We theoretically demonstrate a low crosstalk ring-slot array structure used for label-free multiplexed sensing. The proposed sensors array is based on an array of three ring-slot and input/output line defect coupling waveguides. Each ring-slot cavity has slightly different cavity spacing and different resonant frequency. Results obtained using two dimensional finite-difference time-domain (2D-FDTD) simulation indicate that the resonant frequencies of each sensor unit in response to the refractive index variations are independent. The refractive index sensitivity is 134 ~ 145.5 nm/RIU (refractive index unit) and the Q factors more than 104 can be achieved. The calculated detect limit lower than 1.13 × 104 RIU is obtained. In addition, an extremely small crosstalk lower than −25.8 dB is achieved among the array of three ring-slot cavities. The results demonstrate that this multiplexed sensor array is a promising platform for integrated optical devices and enables highly parallel label-free detection. View Full-Text
Keywords: integrated optical devices; optical sensing and sensors; low crosstalk; photonic crystals integrated optical devices; optical sensing and sensors; low crosstalk; photonic crystals
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Huang, L.; Tian, H.; Zhou, J.; Ji, Y. Design Low Crosstalk Ring-Slot Array Structure for Label-Free Multiplexed Sensing. Sensors 2014, 14, 15658-15668.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top