Feedback control system for a MEMS based optical switching fabric
US6614954B2 · kind B2 · utility
14Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2001 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Oct 24, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3556
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A control system for controlling individual mirrors in a MEMS-based optical switching fabric is presented. The control system includes a position sensitive detector positioned to receive a control beam reflected from individual mirrors of a first mirror array. In some embodiments, the control beam can be time-multiplexed with a calibration beam. The position of the control beam corrected in response to the position of the calibration beam can be compared with a position calculated on the port assignment of the individual mirrors in order to provide feedback to a feed-back based control system for the individual mirrors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.