Method, system and device for realizing data transmission extension in passive optical network
US8184987B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2010 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Oct 23, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/041
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method, a device, and a system for realizing data transmission extension in a passive optical network (PON) are provided. Between a burst-mode clock and data recovery (BCDR) module and an electrical-optical (E/O) amplification module, the device includes a delimiter matching module and a preamble buffering and compensating module. The delimiter matching module is adapted to receive a data frame sent by the BCDR module and determine a location of a delimiter in the data frame. An optical-electrical (O/E) amplification module performs O/E conversion, amplification, and shaping on the data frame. The BCDR module then performs clock and data recovery processing on the data frame. The preamble buffering and compensating module is adapted to receive and buffer the data frame output from the delimiter matching module, insert a compensation preamble in the data frame according to the location of the delimiter in the data frame determined by the delimiter matching module, and send the data frame to the E/O amplification module according to a retiming clock of a downstream direction. Therefore, the data transmission extension is realized in an optical-electrical-optical (OEO) manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.