Arrayed waveguide grating device, process for producing the same, arrayed waveguide module, and optical communication system

摘要

In an arrayed waveguide grating device, two or three components are joined to each other in joint face in any one of or both an input-side slab waveguide and an output-side slab waveguide. In this case, the joint faces are joined to each other in such a state that the joint faces have been relatively moved by a desined degree. By virtue of this construction, an arrayed waveguide grating device, a process for producing the same, and an arrayed waveguide module and an optical communication system using the arrayed waveguide grating device can be realized wherein the joint faces can be fixed to each other at an optimal position to facilitate wavelength correction and the third component for constituting the output-side slab waveguide can be properly selected and joined, for example, to realize increase the number of output-side channels or to provide a monitoring output terminal.