Patent ID: 7232263
Filing Date: 2007-06-19
Classification: G02B,H01L

Abstract:
1. An optical communications module comprising: at least one of a light-emitting device and a light-receiving device; at least one of a first optical transmission line transmitting light from said light-emitting device and a second transmission line transmitting light to said light-receiving device; an optical component optically coupling at least one of said light-emitting device and said first optical transmission line, and said light-receiving device and said second optical transmission line; and a substrate on whose surface a cavity is formed, said cavity having a floor and at least one step, and at least one of a group of said light-emitting device, said optical component and said first optical transmission line, and a group of said light-receiving device, said optical component and said second optical transmission line being mounted on said cavity, an edge of said substrate which defines said cavity completely surrounds a circumference of at least one of said first and said second optical transmission line. wherein an optical axis of one of said light-emitting device and said light-receiving device and an optical axis of said optical component are matched by abutting at least one of said first optical transmission line and said second optical transmission line on said cavity.