Acousto-optic Tunable Filters in Two-Mod
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Dan Östling; Helge E Engan
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Article
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1997
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Elsevier Science
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English
⚖ 174 KB
We demonstrate an acousto-optic tunable filter based on a two-mode elliptical-core fiber. The filter is operated at 1090 nm as a broadband notch filter used for spectral flattening and as a bandpass filter with subnanometer bandwidth. When used for spectral flattening the FWHM bandwidth is optimized