Etched-facet lasers having windows with single-layer optical coatings
US8927306B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2013 |
| Grant date | Jan 6, 2015 |
| Priority date | — |
| Expiry date | Feb 28, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/176
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An edge-emitting etched-facet optical semiconductor structure has a substrate, an active multiple quantum well (MQW) region formed on the substrate, and a ridge waveguide formed over the MQW region extending in substantially a longitudinal direction between a waveguide first etched end facet and a waveguide second etched end facet. A mask layer used to form windows in which the etched end facets are disposed consists of a single dielectric material disposed directly on the ridge waveguide. An optical coating consisting of no more than one layer of the same dielectric material of which the second mask is made is disposed directly on the second mask and disposed directly on the windows to coat the etched end facets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.