METHOD TO ASSEMBLE TRANSMITTER OPTICAL SUBASSEMBLY

摘要

A method to assemble a transmitter optical module is disclosed, where the optical module installs two lenses, one of which concentrates an optical beam emitted from a laser diode, while, the other collimates the optical beam concentrated by the former lens. The method has a feature that the first lens is firstly positioned in a point to collimate the optical beam coming from the laser diode, then, moved to a point, which is apart from the former point with respect to the laser diode, to concentrate the optical beam. The process performs the steps to position the lens by a jig to extract the optical beam passing through the first lens outside of the housing.

主权项

1. A method to assemble a transmitter optical module, comprising steps of:
(a) preparing an intermediate assembly that includes a semiconductor laser diode, a substrate for mounting the semiconductor laser diode thereon, and a housing for installing the substrate mounting the semiconductor laser diode therein; (b) extracting an optical beam output from the semiconductor laser diode to an outside of the housing by setting a supplementary jig to offset the optical beam; (c) aligning a first lens as monitoring the optical beam in a position such that the first lens has an optical axis coinciding with an optical axis of the semiconductor laser diode and the optical beam passing through the first lens becomes a collimated beam; and (d) moving the first lens as monitoring the optical beam in another position such that the semiconductor laser diode is in one of focal points of the first lens.