Abstract

It is shown that a recently proposed phase-retrieval technique for Bragg gratings [Opt. Lett. 22, 93 (1997); J. Lightwave Technol. 15, 1314 (1997)] is not well suited for gratings with imperfections. The reconstructed group delay is in many cases not a more accurate estimate than the simulated group delay of the perfect, designed grating, independently of how small the errors in the grating structure are. The error in the group delay may be especially large near the zeros in the reflection spectrum.

© 1999 Optical Society of America

Phase reconstruction from reflectivity in uniform fiber Bragg gratings

Miguel A. Muriel and Alejandro Carballar
Opt. Lett. 22(2) 93-95 (1997)

Measuring the group delay of fiber Bragg gratings by use of end-reflection interference

Johannes Skaar
Opt. Lett. 24(15) 1020-1022 (1999)

Group-delay reconstruction for fiber Bragg gratings in reflection and transmission

L. Poladian
Opt. Lett. 22(20) 1571-1573 (1997)

Reconstruction of fiber grating refractive-index profiles from complex Bragg reflection spectra

Ding-Wei Huang and Chih-Chung Yang
Appl. Opt. 38(21) 4494-4499 (1999)

Real-time Fourier transformer based on fiber gratings

Miguel A. Muriel, José Azaña, and Alejandro Carballar
Opt. Lett. 24(1) 1-3 (1999)