Methods and systems for multicast control
US8437637B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2010 |
| Grant date | May 7, 2013 |
| Priority date | — |
| Expiry date | Nov 12, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J2014/0253
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Disclosed are a system and a method for controlling multicast data. The system may comprise: a plurality of transceivers, each of which comprises a laser configured to generate an optical carrier, the generated optical carrier being modulated by electrical downstream p-t-p data so as to generate optical downstream p-t-p IRZ signal; a PM configured to modulate the generated optical downstream p-t-p IRZ signal by electrical multicast data so as to generate orthogonally modulated signal; and a DI configured to demodulate the orthogonally modulated data and has a frequency response peak or dip in response to the demodulating, wherein an offset of a laser center wavelength of the laser from the frequency response peak or dip is adjustable so as to selectively enable or disable the multicast data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.