Highly sensitive temperature and strain sensors based on all-fiber 45°-TFG Lyot filter


Autoria(s): Yan, Zhijun; Adedotun, Adebayo; Zhou, Kaiming; Zhang, Lin
Contribuinte(s)

Berghmans, Francis

Mignani, Anna G.

de Moor, Piet

Data(s)

16/04/2012

Resumo

We demonstrate highly sensitive temperature and strain sensors based on an all-fiber Lyot filter structure, which is formed by concatenating two 45°-TFGs (tilted fiber gratings) with a PM fiber cavity. The experiment results show the all-fiber 45°-TFG Lyot filter has very high sensitivity to strain and temperature. The 45°-TFG Lyot filters of two different cavity lengths (18cm and 40 cm) have been evaluated for temperature sensing by heating a section of the cavity from 10°C to 50°C. The experiment results have shown remarkably high temperature sensitivities of 0.616nm/°C for 18cm and 0.31nm/°C for 40cm long cavity filter, respectively. The 18cm long cavity filter has been subjected to strain variations up to around 550μ ε and the filter has exhibited strain sensitivities of 0.02499nm/μ ε and 0.012nm/μ ε for two straining situations, where its cavity middle section of 18cm and 9cm were stretched, respectively. © 2012 SPIE.

Formato

application/pdf

Identificador

http://eprints.aston.ac.uk/27489/1/Highly_sensitive_temperature_and_strain_sensors.pdf

Yan, Zhijun; Adedotun, Adebayo; Zhou, Kaiming and Zhang, Lin (2012). Highly sensitive temperature and strain sensors based on all-fiber 45°-TFG Lyot filter. IN: Optical sensing and detection II. Berghmans, Francis; Mignani, Anna G. and de Moor, Piet (eds) SPIE proceedings . SPIE.

Publicador

SPIE

Relação

http://eprints.aston.ac.uk/27489/

Tipo

Book Section

NonPeerReviewed