Double bevel gradient-index rod lens optical receiver having high optical return loss
US5221839A · kind A · utility
12Cited by
1References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 15, 1991 |
| Grant date | Jun 22, 1993 |
| Priority date | — |
| Expiry date | Feb 15, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3822
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A gradient-index (GRIN) rod lens for use in an optical receiver, in which the end face of the GRIN rod lens opposite a photodetector is bevelled. The resulting optical receiver achieves an optical return loss which is >10 dB higher than known optical receivers having a bevelled end solely on an optical launch side of the GRIN rod lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.