SPECTRAL CHARACTERIZATION OF PHOTOINDUCED HIGH EFFICIENT BRAGG GRATINGS IN STANDARD TELECOMMUNICATION FIBERS

Authors
LIMBERGER HG FONJALLAZ PY SALATHE RP
Citation
Hg. Limberger et al., SPECTRAL CHARACTERIZATION OF PHOTOINDUCED HIGH EFFICIENT BRAGG GRATINGS IN STANDARD TELECOMMUNICATION FIBERS, Electronics Letters, 29(1), 1993, pp. 47-49
Citations number
12
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
Electronics Letters → ACNP
ISSN journal
00135194
Volume
29
Issue
1
Year of publication
1993
Pages
47 - 49
Database
ISI
SICI code
0013-5194(1993)29:1<47:SCOPHE>2.0.ZU;2-9
Abstract
High efficiency Bragg gratings were obtained in a standard telecommuni cation fibre with a germanium concentration of 3%. The best filter has a reflectivity of 94% and a bandwidth of 1.7 nm. Its symmetric reflec tion spectrum with three side-lobes is in very good agreement with a t heoretical calculation. A refractive index change of 1.2 x 10(-3) and a length of 0.84 mm were obtained by fitting a theoretical filter curv e to the experiment data. Additionally, the transmission spectrum show s, on the short wavelength side of the resonance, a region with a maxi mum of 19% loss.