Patent ID: 6888985
Filing Date: 2005-05-03
Classification: G02B,H04B

Abstract:
1. An arrayed waveguide grating, comprising: a substrate; a first channel waveguide disposed on the substrate for receiving a multiplexed optical signal; a channel waveguide array disposed on said substrate and constituted such that each length of waveguides is sequentially longer with a predetermined difference between the lengths of the waveguides; a first slab waveguide disposed on said substrate and connecting said first channel waveguide with said channel waveguide array; a second slab waveguide disposed on said substrate and connecting an end of said channel waveguide array on the side wherein said first slab waveguide has not been connected thereto with an end thereof; and a second channel waveguide disposed on said substrate and connected to the other end of said second slab waveguide, wherein a waveguide part in the connected area has a parabolic configuration.