Compensated variable optical attenuator
US7450812B2 · kind B2 · utility
11Cited by
38References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2004 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | Feb 21, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3588
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrically variable optical attenuator and associated methods are disclosed. In one aspect, the attenuator includes at least one sensor that provides a sensor output with respect to a variable that affects attenuation. Methods of characterizing the attenuator include obtaining a set of attenuation/sensed variable data, and generating a relationship (such as a look-up table or mathematical function) relating the sensed variable to the attenuation. Aspects of the invention also include characterizing the control input/attenuation output to be related by a selected mathematical function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.