Patent ID: 6141366
Filing Date: 2000-10-31
Classification: G02B,H01S

Abstract:
A pitch converting substrate used in a semiconductor laser module comprising:a light source-mounting section provided with plural semiconductor laser elements, which are mounted thereon and arranged in parallel with each other at a first predetermined lateral pitch,an optical fiber-fixing section for supporting plural optical fibers running in parallel with each other at a second predetermined lateral pitch, a number of said plural optical fibers corresponding to that of said plural semiconductor laser elements, anda pitch-converting section, which lies between said light source-mounting section and said optical fiber-fixing section and is provided with plural waveguides for respectively and optically coupling said plural semiconductor laser elements with said corresponding optical fibers,wherein said first predetermined lateral pitch is larger than said second predetermined lateral pitch, and said plural waveguides are arranged with said first predetermined lateral pitch on a side of said light source-mounting section, and with said second predetermined lateral pitch on a side of said optical fiber-fixing section.