Fabrication and Mode Identification of Compact Long-Period Gratings Written by CO $_{2}$ Laser

Author

Chan, Hon M. ; Alhassen, Fares ; Tomov, Ivan V. ; Lee, Henry P.

Author_Institution

Univ. of California, Irvine

Volume

20

Issue

8

fYear

2008

fDate

4/15/2008 12:00:00 AM

Firstpage

611

Lastpage

613

Abstract

We report highly compact (1.2 cm) long-period fiber gratings (LPGs) exhibiting strong grating effect (>30-dB loss) and low insertion loss (<0.25 dB) inscribed by a continuously scanned CO2 laser. The LPG resonances are also probed using traveling acoustic gratings with variable period. Our results show that these CO₂ laser side-exposed LPGs predominantly couple to antisymmetrical cladding modes.

Keywords

carbon compounds; diffraction gratings; gas lasers; laser materials processing; optical fibre cladding; optical fibre fabrication; optical fibre losses; CO₂; CO₂ laser; antisymmetrical cladding modes; compact gratings; fiber gratings; grating effect; insertion loss; long-period gratings; mode identification; optical fabrication; size 1.2 cm; traveling acoustic gratings; Fiber gratings; Fiber lasers; Insertion loss; Laser modes; Optical coupling; Optical device fabrication; Optical fiber devices; Optical fiber sensors; Optical fibers; Silicon compounds; CO$_{2}$ laser; long-period gratings (LPGs); optical fiber devices; optical fiber filters;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2008.918908

Filename

4475228

Fabrication and Mode Identification of Compact Long-Period Gratings Written by CO Laser

Chan, Hon M. ; Alhassen, Fares ; Tomov, Ivan V. ; Lee, Henry P.

jour

Fabrication and Mode Identification of Compact Long-Period Gratings Written by CO $_{2}$ Laser