Title :
Empirical Relations for Design of Linear Edge Filters Using Apodized Linearly Chirped Fiber Bragg Grating
Author :
Bandyopadhyay, Somnath ; Biswas, Palas ; Pal, Atasi ; Bhadra, Shyamal Kumar ; Dasgupta, Kamal
Author_Institution :
Fiber Opt. Lab., Central Glass & Ceramic Res. Inst., Kolkata, India
Abstract :
Apodized linearly chirped Bragg grating (CFBG) filters have been studied with a view of determining an optimal set of grating parameters to design and fabricate linear edge filter for Bragg grating sensor demodulation. A rigorous numerical computation towards understanding the relation of all the grating parameters with filter characteristics like the linear bandwidth and slope efficiency produced some simple empirical formula for the design of edge filters of specific desired characteristics. The results are corroborated with experiments.
Keywords :
Bragg gratings; chirp modulation; demodulation; fibre optic sensors; optical design techniques; optical filters; Bragg grating sensor demodulation; apodized linearly chirped fiber Bragg grating; grating parameters; linear edge filters; slope efficiency; Band pass filters; Bandwidth; Bragg gratings; Chirp; Councils; Demodulation; Fiber gratings; Nonlinear filters; Sensor phenomena and characterization; Wavelength measurement; Apodization; edge filters; fiber Bragg grating (FBG); fiber Bragg grating (FBG) sensor interrogation; linear chirp;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2008.928192
