Title :
Reconstruction of minimum-phase group delay from fibre Bragg grating transmittance/reflectance measurements
Author :
Rochford, K.B. ; Dyer, S.D.
Author_Institution :
Optoelectron. Div., Nat. Inst. of Stand. & Technol., Boulder, CO, USA
fDate :
5/13/1999 12:00:00 AM
Abstract :
A technique is presented for reconstructing the group delay of fibre gratings from amplitude data that uses methods from homomorphic signal processing. Phase reconstruction is compared to exact solutions using the reflectance from a uniform grating. An intermediate windowing process improves the recovery accuracy
Keywords :
Bragg gratings; Hilbert transforms; delays; fast Fourier transforms; optical filters; amplitude data; fibre Bragg grating; homomorphic signal processing; intermediate windowing process; minimum-phase group delay; optical filters; phase reconstruction; recovery accuracy; reflectance measurements; transmittance measurements; uniform grating;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19990546
