Optical waveguide attenuation
US6021248A · kind A · utility
12Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1998 |
| Grant date | Feb 1, 2000 |
| Priority date | — |
| Expiry date | Jul 15, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12097
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A turntable optical transmission circuit has a light source forming an input to a waveguide, a detector detecting light output from the waveguide, a comparator for comparing the output with a predetermined value to generate a difference signal and a waveguide trimmer for changing the waveguide transmission in dependence on the difference signal until the output matches the predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.