Analog optical fiber communication system, and laser adapted for use in such a system
US5285468A · kind A · utility
10Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1992 |
| Grant date | Feb 8, 1994 |
| Priority date | — |
| Expiry date | Jul 17, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/028
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
We have discovered that the yield of DFB lasers suitable, e.g., for use in AM CATV systems can be substantially increased if the lasers have a back facet with a higher reflectivity (>80%, preferably >90%) HR coating thereon than is conventional (e.g., .about.65%). Exemplary currently preferred embodiments of the invention comprise a three-pair stack of .lambda./4 yttrium-stablized zirconia/Si having about 95% reflectivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.