In-band signaling in optical cross-connect switch using frequency modulation
US8817359B2 · kind B2 · utility
9Cited by
10References
11Claims
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Key dates
| Filing date | Sep 25, 2012 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Sep 25, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/13396
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a multiple-axis free-space-coupled single-mode fiber-optic transmission system, such as an optical cross-connect switch, a method and apparatus are provided for the closed loop attenuation of optical beam power signals employed to align and cause dithering via MEMS mirrors which are manipulated to impose on the optical beam frequency modulation and, in particular, a time-varying set of induced mirror angles that yield a desired time history of optical power level that is modulated according to a digital code in the frequency modulation pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.