Patent ID: 6985647
Filing Date: 2006-01-10
Classification: G02B,H04B

Abstract:
1. An optical module comprising: a substrate having formed at a surface thereof a first groove and a second groove both adopting a first structure and a third groove at which a branching filter is disposed adopting a second structure and located between said first groove and said second groove both adopting said first structure; an optical fiber having one end thereof set at said first groove adopting said first structure; a light emitting element that emits light with a first wavelength; a first lens element having a fitting portion with an external diameter substantially matching the external diameter of said optical fiber and set at said second groove adopting said first structure, which converts divergent light emitted from said light emitting element to substantially parallel light; a second lens element having a fitting portion with an external diameter substantially matching the external diameter of said optical fiber and set at said first groove adopting said first structure, through which the substantially parallel light is converted to convergent light and the convergent light enters said optical fiber; a wavelength branching filter set at said third groove adopting said second structure at a position set within an optical path extending between said optical fiber and said light emitting element, which has a function of branching light with varying wavelengths; and a light-receiving element at which light with a second wavelength emitted from said optical fiber enters via said wavelength branching filter.