Infinera Corporation

Sofia Amado

Han Henry Sun

Ting-Kuang Chiang

Sandy Thomson

Yuejian Wu

Ahmed Awadalla

Scott Pringle

Christopher Fludger

Aroutchelvame Mayilavelane

Consistent with the present disclosure, multiple forward error correction (FEC) encoders are provided for encoding a respective one of a plurality of data streams. A mechanism is provided to mix or interleave portions of the encoded data such that each subcarrier carries information associated with each data stream, as opposed to each subcarrier carrying information associated with only a corresponding one of the data streams. As a result, both higher SNR and low SNR optical subcarriers carry such information, such that errors occurring during transmission are distributed and not concentrated or limited to information associated with a single data stream. Accordingly, at the receive end, each FEC decoder decodes information having a similar overall error rate. By balancing the error rates across each FEC encoder/decoder pair, the overall ability to correct errors improves compared to a system in which mixing or interleaving is not carried out.

Methods and apparatus for sub-carrier interleaving to improve overall forward error correction

Growing community of inventors

Nuremberg, Germany

Sofia Amado