Next-generation high-capacity optical networks require flexible allocation of spectrum
resources, for which low-cost optical filters with an ultra-wide bandwidth tunability beyond
100 GHz are desired. We demonstrate an integrated band-pass filter with the bandwidth
continuously tuned across 670 GHz (117–788 GHz) which, to the best of our knowledge, is
the widest tuning span ever demonstrated on a silicon chip. The filter also features
simultaneous wavelength tuning and an unlimited free spectral range. We measured an out …

Résumé Next-generation high-capacity optical networks require flexible allocation of
spectrum resources, for which low-cost optical filters with an ultra-wide bandwidth tunability
beyond 100 GHz are desired. We demonstrate an integrated band-pass filter with the
bandwidth continuously tuned across 670 GHz (117–788 GHz) which, to the best of our
knowledge, is the widest tuning span ever demonstrated on a silicon chip. The filter also
features simultaneous wavelength tuning and an unlimited free spectral range. We …