Patent ID: 7912330
Filing Date: 2011-03-22
Classification: G02B,Y10T

Abstract:
1. A method of forming an arrayed waveguide grating (AWG) device which compensates center wavelength shifts caused by temperature variations, comprising: forming two cut-elements which are originated from a main body of an AWG chip by cutting an interface between (i) a stripe waveguide circuit connected to an input slab waveguide and (ii) the input slab waveguide, which are formed on the same substrate; aligning the two cut-elements on a top surface of an alignment base substrate; attaching a lateral sliding rod to connect between the cut-element containing the stripe waveguide circuit connected to the input slab waveguide and the alignment base substrate; assembling a cut-element of the two cut-elements containing the stripe waveguide circuit to be tightly contacted on the top surface of the alignment base substrate; and moving the position of the cut-element containing the stripe waveguide circuit along a cut interface of the other cut-element of the two cut-elements containing the input slab waveguide and a waveguide array by thermal expansion and contraction of the lateral sliding rod, in order to compensate the center wavelength shift due to the temperature change, wherein an area of the alignment base substrate does not overlap an area of the waveguide array, and the other cut-element of the AWG main body is fixed on a portion of the top busing an adhesive.