A monolithic wavelength-routing switch using double-ring-resonator-coupled tunable lasers with highly reflective mirrors

We report a monolithically integrated 8×8 wavelength-routing switch with semiconductor-optical-amplifier-based wavelength converters and double-ring-resonator-coupled tunable lasers incorporated with highly reflective cavity mirrors. The dry-etched mirror coated with Au enables flexibility in device layout. It allows highly reflective mirrors in a chip and antireflective coating on both the input and output facets of the wavelength converters. A 1×8 high-speed wavelength routing operation of a non-return-to-zero signal at 10 Gbit/s is demonstrated.