Patent ID: 9551834
Date: 2017-01-24
CPC Classifications: G02B,Y10T

Claim:
1. A method of assembling a transmitter optical module that includes a semiconductor laser diode (LD), a substrate that mounts the LD thereon, and a housing that installs the substrate and the LD therein, the method comprising steps of: (a) extracting an optical beam output from the LD to an outside of the housing by using a supplementary jig that displaces the optical beam in parallel to an optical axis of the LD; (b) 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 LD and the optical beam output from the supplementary jig becomes substantially in parallel to the optical beam output from the LD and a collimated beam; and (c) moving the first lens as monitoring the optical beam in another position such that a distance from the LD to the first lens is longer than a focal point of the first lens.