DocumentCode
3468792
Title
Spectral flattening by an all-fiber acousto-optic tunable filter
Author
Östling, Dan ; Engan, Helge E.
Author_Institution
Dept. of Phys. Electron., Norwegian Inst. of Technol., Trondheim, Norway
Volume
2
fYear
1995
fDate
7-10 Nov 1995
Firstpage
837
Abstract
An acousto-optic notch filter based on modal coupling in a two-mode optical fiber is used to flatten the spectrum of a fiber laser. The FWHM bandwidth is optimized so that only one acoustic frequency is needed. At 1090 nm the spectral variation is reduced from 4 dB to less than 0.3 dB within a bandwidth of 6 nm
Keywords
acousto-optical filters; fibre lasers; optical fibre couplers; optical fibre filters; tuning; 1090 nm; FWHM bandwidth; acoustic frequency; acousto-optic notch filter; all-fiber acousto-optic tunable filter; bandwidth; fiber laser; modal coupling; spectral flattening; spectral variation; two-mode optical fiber; Band pass filters; Bandwidth; Optical coupling; Optical fiber filters; Optical fiber losses; Optical fiber polarization; Optical fibers; Optical filters; Optical waveguides; Surface acoustic waves;
fLanguage
English
Publisher
ieee
Conference_Titel
Ultrasonics Symposium, 1995. Proceedings., 1995 IEEE
Conference_Location
Seattle, WA
ISSN
1051-0117
Print_ISBN
0-7803-2940-6
Type
conf
DOI
10.1109/ULTSYM.1995.495697
Filename
495697
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