System and method for measuring perturbations using a slow-light fiber Bragg grating sensor

摘要: An optical device, a method of configuring an and using fiber Bragg grating is provided. The device includes grating, narrowband source, at least one detector. has power transmission spectrum as function wavelength with or more resonance peaks, each comprising local maximum two non-zero-slope regions the therebetween. light generated by source region peak that selected such following quantities, evaluated peak, value: (a) product group delay (b) minus reflection spectrum.