Patent ID: 7941025
Filing Date: 2011-05-10
Classification: G02B,H01L,H01S

Abstract:
1. A semiconductor photonic device comprising: a semiconductor photonic element having an effective refractive index n a coating film including a plurality of layers and located on an end surface of said semiconductor photonic element, wherein where m 11 , m 12 , m 21 , and m 22 are elements of the characteristic matrix of said coating film having λ, n 1 , n 2 , d 1 , d 2 and d 1 /d 2 as variables, the characteristic matrix satisfies where φ 1 is phase change of light having the wavelength λ and passing through said first layer of said multi-layer film and φ 2 is phase change of light having the wavelength λ and passing through said second layer of said multi-layer film,