Patent ID: 8184987

Claim:
A device for realizing data transmission extension in a passive optical network (PON), comprising: an optical-electrical (O/E) amplification shaping module; a burst-mode clock and data recovery (BCDR) module; an electrical-optical (E/O) amplification module; a delimiter matching module configured to receive a data frame sent by the BCDR module and determine a location of a delimiter in the data frame, wherein the O/E amplification shaping module performs an O/E conversion, an amplification and a shaping on the data frame, and the BCDR module performs a clock and data recovery processing on the data frame; and a preamble buffering and compensating module configured 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 then send the data frame to the E/O amplification module according to a retiming clock in a downstream direction.