Patent ID: 7194165
Filing Date: 2007-03-20
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 in such that each length of waveguides is sequentially longer with a predetermined difference in 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 rectangular field distribution exciting configuration that excites a rectangular field distribution.