ARRAY WAVEGUIDE GRATING AND METHOD OF MANUFACTURE THEREOF

摘要

The invention relates to an array waveguide grating and a method of manufacture thereof, in which a substantially smooth wavelength versus loss characteristic is obtained in a pass band, rather than increasing the loss. In an array waveguide grating (10), wavelength multiplex division signal light is demultiplexed by a channel waveguide array (15), reflected by a Fabry-Perot resonator array (16), and passed through the channel waveguide array (15) again, so that a substantially smooth wavelength versus loss characteristic is obtained in a pass band, rather than increasing the loss.