Laser diode edge assembly structure for three-dimensional active alignment in transmitter optical assembly
US10809469B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 2019 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Apr 2, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/4031
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method and a system for active alignment of a light source assembly along three dimensions in an optical bench plane are provided. The light source assembly, preferably a laser diode on its sub-mount, is actively aligned in three dimensions, longitudinal, transection and vertical along the optical bench. The light source assembly is attached on edge of the optical bench, via adhesion processes, such as solder welding. Optical components such as collimator lens, isolator, etc are first passively aligned on the optical bench using alignment marks and epoxy slots provided on the surface of the optical bench. Then, laser diode, mounted on a laser diode sub-mount, is aligned in X and Z direction. Thereafter, the light source assembly is pushed towards the edge of the optical bench and attached with the edge via a solder joint. Also, a compensator can be actively aligned until the optimum light intensity achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.