Patent ID: 9042691
Filing Date: 2015-05-26
Classification: G02B

Abstract:
1. An optical coupling module of a silicon photonics chip which is optically coupled with an internal/external optical fiber, the optical coupling module comprising: a core transmitting light and having an end grating formed at one end of the core; a cladding covering the core and holding the light in the core through total internal reflection; and a refractive element formed between the core grating and the cladding, and having an intermediate refractive index between the refractive indexes of the core and the cladding, the refractive element being optically coupled with the internal/external optical fiber, the refractive element having a refractive grating in direct contact with the end grating and in a shape that is the same as that of the end grating so that the refractive grating is disposed within the end grating.