Fiber Laser Temperature Sensor based on Sagnac Interferometer

Autor:	Noran Azizan Cholan, R. Talib, Nor Hafizah Ngajikin, N A N Jaharuddin, Mohd Azwadi Omar, A M Abdulrahman
Rok vydání:	2019
Předmět:	History Materials science business.industry Polarization-maintaining optical fiber Laser Computer Science Applications Education law.invention Interferometry Wavelength Optics law Fiber laser Fiber amplifier A fibers business Sensitivity (electronics)
Zdroj:	Journal of Physics: Conference Series. 1371:012016
ISSN:	1742-6596 1742-6588
DOI:	10.1088/1742-6596/1371/1/012016
Popis:	A fiber laser temperature sensor which is based on Sagnac interferometer is proposed in this work. The fiber laser consists of an erbium-doped fiber amplifier for signal amplification and a Sagnac interferometer for signal filtering. The Sagnac interferometer is made of 30 cm polarization maintaining fiber (PMF) and it acts as the sensing head. Experimental results suggest that the temperature does affect the laser wavelength. As the temperature varies from 30°C to 41°C, the laser wavelength is shifted to the lower wavelength from 1596.5 nm to 1581.8 nm with the recorded sensitivity of 1.1965 nm/°C. The change of the laser wavelength with temperature validates the use of this fiber laser as the temperature sensor.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c26c9ca8c0f983aa9700e72a3637f1b0 https://doi.org/10.1088/1742-6596/1371/1/012016 Zobrazit plný text záznamu