Analog radio frequency transport over optical media using continuous optical phase modulation and noncoherent detection
US8861983B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 16, 2011 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Jan 22, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/25758
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Analog transport of a wideband RF signal is effectively and efficiently provided using a coherent, narrowband optical carrier. The wideband RF signal is phase modulated onto the carrier at a first location. Non-coherent discrimination is applied to the modulated carrier at a second, different location to generate an amplitude modulated optical signal where the amplitude modulation represents the original wideband RF signal. A photo-detector is then used to regenerate a representation of the original wideband RF signal. The method and apparatus of the invention can be applied in systems dedicated to the analog RF transport or in wavelength division multiplexed systems which also provide transport for other analog or digital data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.