Integrated Microfibre Device for Refractive Index and Temperature Sensing

Lim, Kok Sing and Aryanfar, Iman and Chong, Wu Yi and Cheong, Yew Ken and Harun, Sulaiman Wadi and Ahmad, Harith (2012) Integrated Microfibre Device for Refractive Index and Temperature Sensing. Sensors, 12 (9). pp. 11782-11789. ISSN 1424-8220, DOI

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A microfibre device integrating a microfibre knot resonator in a Sagnac loop reflector is proposed for refractive index and temperature sensing. The reflective configuration of this optical structure offers the advantages of simple fabrication and ease of sensing. To achieve a balance between responsiveness and robustness, the entire microfibre structure is embedded in low index Teflon, except for the 0.5-2 mm diameter microfibre knot resonator sensing region. The proposed sensor has exhibited a linear spectral response with temperature and refractive index. A small change in free spectral range is observed when the microfibre device experiences a large refractive index change in the surrounding medium. The change is found to be in agreement with calculated results based on dispersion relationships.

Item Type: Article
Uncontrolled Keywords: Integrated devices; Microfibre; Microfibre resonator; Sensor
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Faculty of Science > Department of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 07 Jan 2019 07:22
Last Modified: 07 Jan 2019 07:22

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