Title :
Investigation of thermal effects on embedded microcoil resonators
Author :
Chen, G.Y. ; Lee, T. ; Jung, Y. ; Belal, M. ; Brambilla, G. ; Broderick, N. ; Newson, T.P.
Author_Institution :
ORC, Univ. of Southampton, Southampton, UK
Abstract :
In this paper we report on the theoretical and experimental analysis of such a sensor based on a microcoil resonator (MCR). A 2 μm-diameter silica microfiber (MF), fabricated using a ceramic microheater, was wrapped around a 1 mm-diameter glass rod to form a 3-turn MCR, and subsequently embedded in EFIRON UV-373 polymer. The Q-factor and free spectral range (FSR) were 5.3x104 and 486 pm respectively. The temperature-dependent transmission spectrum of the MCR was simulated by solving the coupled mode equations [3] whilst considering the thermal effects due to the thermo-optic effect (dn/dT) and thermal-expansion (dL/dT) of both materials. A sensitivity of 150 pm/οC (± 30%) and FSR of 0.5 nm were predicted.
Keywords :
Q-factor; fibre optic sensors; micro-optics; optical resonators; silicon compounds; thermo-optical effects; EFIRON UV-373 polymer; Q-factor; ceramic microheater; coupled mode equations; embedded microcoil resonators; free spectral range; silica microfiber; size 1 mm; size 2 mum; temperature-dependent transmission spectrum; thermal effects; thermal expansion; thermo-optic effect; Optical coupling; Optical polarization; Optical sensors;
Conference_Titel :
Lasers and Electro-Optics Europe (CLEO EUROPE/EQEC), 2011 Conference on and 12th European Quantum Electronics Conference
Conference_Location :
Munich
Print_ISBN :
978-1-4577-0533-5
Electronic_ISBN :
Pending
DOI :
10.1109/CLEOE.2011.5943059
