Multimode interference coupler based photonic analog-to-digital conversion scheme

Abstract

A novel phase-shifted optical quantization scheme for an all-optical analog-to-digital converter, which uses 4×4 multimode interference couplers, is demonstrated and theoretically analyzed. The whole scheme can be integrated on a chip.

Low-loss compact 1×2 MMI coupler with hybrid structure based on rib-strip-rib waveguide for thick-silicon platform

“…When the top silicon layer with thickness about micrometer such as 2~3 m, the devices belong to thick-silicon platform. MMI coupler in thin-silicon platform has been widely investigated and are used as optical hybrid [3,4], wavelength multiplexer [5] and quantizer [6,7]. However, the researches about MMI coupler in thick-silicon platform are few.…”