Article ID Journal Published Year Pages File Type
1541421 Optics Communications 2007 4 Pages PDF
Abstract

We propose and demonstrate a new technique for intensity-based fiber temperature sensing based on long-period fiber grating pairs having different temperature coefficients and an absorptive core mode blocker placed between the two gratings. The constructed fiber sensor exhibits a bandpass filter response that varies with the temperature. A light-emitting diode is used as the input light source to convert the wavelength shift into an optical intensity change. A photodetector is used to measure the output intensity as a temperature-encoded signal.

Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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