Frame formatting for high rate optical communications

摘要

Methods, systems, and devices are described for formatting of data streams to be transmitted over fiber optic channels, and for processing received optical signals. A data transmission device may include a digital coding and modulation module that encodes a digital data stream, inserts unique words into the digital data stream, and modulates the encoded data stream and unique words onto optical channels for transmission over an optical fiber. A demodulation and decoding device may include a unique word identification module that identifies the unique words inserted in each optical channel stream, determines one or more characteristics of the plurality of optical channels based on the unique words, and provides the one or more characteristics to one or more other modules in the demodulator and decoding device.

主权项

1. A method comprising:
receiving a plurality of optical signals on a plurality of optical channels from an optical fiber communication system; digitizing the received plurality of optical signals to obtain a plurality of data streams corresponding to the plurality of optical signals; identifying unique words in each of the plurality of data streams; determining one or more characteristics of the plurality of data streams based at least in part on the unique words, wherein the one or more characteristics includes at least one of particular received optical channels corresponding to the plurality of data streams or a timing offset between one or more of the plurality of data streams; and demodulating and decoding the plurality of data streams into data transport frames using the one or more characteristics of the plurality of data streams determined using the identified unique words.