Optical relative humidity sensor based on a hollow core-photonic bandgap fiber

• Main Authors: Mohd. Noor, Muhammad Yusof, Khalili, N., Skinner, I., Peng, G. D.
• Format: Article
• Published: IOP Publishing 2012
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.utm.my/id/eprint/32980/; http://dx.doi.org/10.1088/0957-0233/23/8/085103

We propose a novel relative humidity (RH) sensor based on a hollow core-photonic bandgap fiber (HC-PBF) using a wavelength scan and a reference technique in this paper. The wavelength scan of water vapor absorption peak around 1368.59nm is realized by injecting sawtooth modulated current to a DFB la...