Document Type



This item is available under a Creative Commons License for non-commercial use only


Electrical and electronic engineering

Publication Details

Applied Optics, Vol.49, no.29, 2010, p.5626


We derive an analytic equation for a ratiometric wavelength measurement system and analyze the influence of the optical source signal bandwidth. Our investigation shows that in a particular optical sensing system, the higher the bandwidth of the optical signal, the better resolution the system will achieve. Experiments based on two types of optical signals (output signal of a tunable laser and a fiber Bragg grating) were carried out, and experimental results verified both the simulation results and the theoretical analysis.