Narrowband optical filter, with a variable transmission spectrum, using stimulated Brillouin scattering in optical fiber
- 1 September 2002
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 27 (17) , 1552-1554
- https://doi.org/10.1364/ol.27.001552
Abstract
A novel shape-adjustable narrowband optical filter utilizing stimulated Brillouin scattering in an optical fiber is proposed and demonstrated. In this scheme, binary-phase-shift-keying modulation is applied to the pump wave to broaden and shape the Brillouin gain spectrum. By choosing an appropriate modulation data pattern, we realized a flat-top steep-cutoff optical bandpass filter with a 3-dB bandwidth of 1.5 GHz and a 10-dB bandwidth of 2 GHz is realized. In addition, a tunable optical notch filter is also realized by deamplification of the anti-Stokes wave.Keywords
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