J. Skaar et al., HIGH-REFLECTIVITY FIBEROPTIC BANDPASS FILTER DESIGNED BY USE OF THE ITERATIVE SOLUTION TO THE GELFAND-LEVITAN-MARCHENKO EQUATIONS, Optics letters, 23(12), 1998, pp. 933-935
A fiber Bragg grating bandpass filter has been investigated. The profi
le of the 3.1-cm-long grating was synthesized for high reflectivity an
d low dispersion by use of the iterative solution to the Gel'fand-Levi
tan-Marchenko equations. A grating designed according to this synthesi
s was written into a boron-codoped germanosilica fiber. The measured s
pectral response was in good agreement with simulations. The achieved
in-band reflection was 97%, and the passband ripple was only 0.06 dB.
(C) 1998 Optical Society of America.