Patent ID: 11880070
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 5:
6. A method comprising:
disposing plural grating couplers on a substrate, each of the plural grating couplers has a grating interval as different from other ones of the plural grating couplers, wherein each of the plural grating couplers has a respective grating arraying direction, the respective grating arraying direction being different from other ones of the plural grating couplers, wherein a grating interval of one of the plural grating couplers equals a grating interval of an alignment target, wherein the alignment target is a grating coupler;
respectively connecting plural optical waveguides with the plural grating coupler; and
respectively connecting plural reflectors to the plural optical waveguides.