Details

Autor(en) / Beteiligte

• Yang, Zhiping
• Wang, Yanlu
• Su, Chang
• Shao, Liyang
• He, Jian-Jun
• Li, Mingyu

Titel

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

Ist Teil von

• Sensors (Basel, Switzerland), 2020-09, Vol.20 (18), p.5149

Ort / Verlag

Basel: MDPI AG

Erscheinungsjahr

2020

Quelle

Elektronische Zeitschriftenbibliothek - Freely accessible e-journals

Beschreibungen/Notizen

• 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.