OPTICAL CIRCUIT

摘要

A low-cost optical circuit, in which influence of reflected light is reduced, is provided. According to an embodiment of the present invention, an optical circuit (200) comprises a first optical coupler (204A) having at least two outputs, and a second optical coupler (204B) coupled to at least one of the outputs of the first optical coupler (204A), and wherein the ratio of an intensity of light reflected from the first optical coupler (204A) to an intensity of light inputted to the first optical coupler is smaller than the ratio of an intensity of light reflected from the second optical coupler (204B) to an intensity of light inputted to the second optical coupler.

主权项

1. An optical circuit comprising:
a first optical coupler comprising at least two outputs; and a second optical coupler coupled to at least one of the outputs of the first optical coupler; wherein a ratio of intensity of light reflected from the first optical coupler to intensity of light inputted to the first optical coupler is smaller than a ratio of intensity of light reflected from the second optical coupler to intensity of light inputted to the second optical coupler.