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

fYear

2011

fDate

22-26 May 2011

Firstpage

1

Lastpage

1

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Europe (CLEO EUROPE/EQEC), 2011 Conference on and 12th European Quantum Electronics Conference

Conference_Location

Munich

ISSN

Pending

Print_ISBN

978-1-4577-0533-5

Electronic_ISBN

Pending

Type

conf

DOI

10.1109/CLEOE.2011.5943059

Filename

5943059