All - Fibre Acousto - Optic Tunable Filter Based on a Null Coupler
نویسندگان
چکیده
Tunable acousto-optic spectral filters based on null couplers have been improved by making the coupler more uniform. A new double-pass arrangement further narrows the bandwidth, reduces the sidelobes to -20 dB and doubles the frequency shift,
منابع مشابه
Low-loss all-fiber acousto-optic tunable filter.
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