System and method for transmitting analog signals with a modulating retroreflector and hybrid amplitude and frequency modulation
US7715727B2 · kind B2 · utility
2Cited by
9References
27Claims
0Family size
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Key dates
| Filing date | Aug 1, 2006 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Jul 9, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2587
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system and method for encoding an analog input signal for optical transmission, including driving a voltage controlled oscillator with an analog input signal to produce a frequency modulated electrical signal having a frequency proportional to the amplitude of the input signal, and applying the frequency modulated electrical signal to a multiple quantum well modulating retroreflector. The retroreflector receives optical energy from a laser source and modulates the optical energy with the frequency modulated signal to produce an output optical signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.