Patent ID: 9477044
Filing Date: 2016-10-25
CPC Classification: G02B

Claim Text:
1. A waveguide of a 3-dimensional interconnection structure, comprising: a main waveguide which is formed in a predetermined direction; and at least one branch waveguide which connects to the main waveguide to form a predetermined angle, wherein the at least one branch waveguide branches an optical signal, which is propagated in the main waveguide, at a predetermined rate, and wherein the predetermined angle at which the at least one branch waveguide connects with the main waveguide is determined according to a structure, a refractive index distribution, and an optical mode distribution of the main waveguide to use characteristics in which the optical signal which is propagated in the main waveguide is evanescent-wave-coupled to light output to the at least one branch waveguide.