Single wavelength semiconductor laser with grating-assisted dielectric waveguide coupler

摘要

A grating (18) couples the waveguide region of a semiconductor laser (11) to a dielectric waveguide (21). The waveguide region of the laser includes a mirror (15) at one end thereof and an absorber (24) at the other end thereof. The dielectric waveguide includes a reflector therein to reflect a portion of the light coupled from the laser to the dielectric waveguide back into the laser waveguide region.