Design and applications of planar waveguide interleaving filters

10 GHz femtosecond pulse interleaver in planar waveguide technology

“…To satisfy the growing demand for more information capacity, fiber coupled and planar waveguide optical interleavers have been utilized to increase the channel spacing. These interleaving filters were primarily designed for wide-bandwidth pass-bands by cascading multiple stages and optimizing the coupling coefficient ratios at each individual interleaver stage for operating frequencies around 50-100 GHz [10][11][12][13]. A good overview over different interleaver implementations can be found in Cao [14] and Kawachi [15], who outlines the various silica waveguide technology components.…”