Long-period gratings written by a CO.sub.2./sub. laser in fibers of several types under different recording conditions

0304197 - URE-Y 20030079 ES eng A - Abstract
Chomát, Miroslav - Berková, Daniela - Matějec, Vlastimil - Kašík, Ivan - Jančárek, A. - Vrbová, M. - Dunovský, J. - Císařovský, P.
Long-period gratings written by a CO₂ laser in fibers of several types under different recording conditions.
Badajoz: FORMATEX, 2003. Book of Abstracts 1st International Meeting on Applied Physics. s. 836
[APHYS-2003 /1./. 13.10.2003-18.10.2003, Badajoz]
R&D Projects: GA ČR GA102/03/0475; GA ČR GA102/02/0780
Institutional research plan: CEZ:AV0Z2067918
Keywords : optical fibres * diffraction gratings
Subject RIV: JA - Electronics ; Optoelectronics, Electrical Engineering

Results on long-period gratings /LPG/ written by a scanned focused beam of a CO₂ laser in step-index fibers drawn at temperatures of 1880 and 1930 .sup.o.sup.C are reported. Transmission spectra of LPG fabricated repeatedly in one-week intervals in fiber regions which were 70 cm apart show to large changes of the residual stress occurring in the fiber after drawing. Results on the preparation of a new type of a fiber for LPG inscription with an inverted parabolic-index profile in the cladding are reported, too.
Permanent Link: http://hdl.handle.net/11104/0114338