Skip to Content
You are currently on the new version of our website. Access the old version .
MDPIMDPI

Advanced

SensorsSensors
PDF
  • Letter
  • Open Access

9 September 2020

9 Pages

Thermo-Optical Tuning Cascaded Double Ring Sensor with Large Measurement Range

,
,
,
,
and
1
Department of Optical Engineering, School of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun 130022, China
2
State Key Laboratory of Modern Optical Instrumentation, Centre for Integrated Optoelectronics, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
3
Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
*
Author to whom correspondence should be addressed.
Sensors2020, 20(18), 5149;https://doi.org/10.3390/s20185149
This article belongs to the Special Issue Optical and Photonic Sensors
Version Notes
Review Reports
Order Reprints

Abstract

In this paper, a thermo-optic tuning optical waveguide sensor system based on a cascaded double micro-ring resonator is investigated. The system consists of a micro-ring resonator with the microheater as a reference ring and a micro-ring resonator with removing the upper cladding layers as a sensing ring, combined with a microfluidic control. The refractive index change of the sample is measured by the electric power change of the microheater. The experimental results show that the sensitivity of the thermo-optic tuning is 34.231 W/RIU (refractive index units), and the measurement range is 4.325 × 10−3 RIU, almost eight times larger than that of the cascaded double micro-ring resonator without thermo-optic tuning for the intensity interrogation.

Article Metrics

Citations

Article Access Statistics

Journal Statistics
Multiple requests from the same IP address are counted as one view.
Multi-Proxy Constraint Loss for Vehicle Re-Identification
Previous
RGB-D Object SLAM Using Quadrics for Indoor Environments
Next