Dynamic gain equalization arrangement for optical signals
作者： Christopher Richard Doerr
DOI:
关键词: Planar 、 Midpoint 、 Phase (waves) 、 Physics 、 Attenuation 、 Equalization (audio) 、 Optics 、 Filter (video) 、 Circulator 、 Interferometry
摘要: An optical dynamic gain equalization filter (DGEF) comprises a planar arrangement of preferably “perfectly sampled” (or alternatively oversampled) waveguide grating routers (WGR's) connected by individual paths each containing Mach-Zehnder interferometer operated in push-pull fashion so that positive phase change one arm and corresponding negative the other produces desired attenuation while, at same time, overall signals after passing through is kept constant with respect to adjacent paths. Alternatively, above-described effectively “cut half”, its size also reduced accordingly, using mirror placed midpoint device an appropriate circulator separate input output signals.
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