Monolithically integrated ridge waveguide semiconductor optical preamplifier
US5069561A · kind A · utility
3Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1990 |
| Grant date | Dec 3, 1991 |
| Priority date | — |
| Expiry date | Jul 24, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/0262
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A monolithically integrated optical preamplifier comprises an amplifying region, an optical detection region for detecting amplified light, and an optically transparent and electrically insulating isolation region interposed between the amplifying and optical detection regions. The amplifying region achieves reduced facet reflectivity by being designed to have a large spot size, single-traverse mode waveguide amplifier oriented at an angle with respect to a crystal plane through the preamplifier. The isolation region is preferably an air gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.