Abstract: A system is described that includes a system for correcting modal dispersion and errors in an optical fiber system. The system includes a multisegment photodetector coupled to an end of an optical fiber for detecting optical signals exiting the optical fiber and for converting the optical signals to an electrical output, the multisegment photodetector including a plurality of photodetector regions configured such that one of the plurality of photodetectors regions intercepts a mode in a manner distinct from another of the plurality of photodetectors. The system also includes logic configured to receive a resultant signal output from the photodetector regions and provide forward error correction decoding of the resultant signal.

Abstract: A system is described that includes a system for correcting modal dispersion and errors in an optical fiber system. The system includes a multisegment photodetector coupled to an end of an optical fiber for detecting optical signals exiting the optical fiber and for converting the optical signals to an electrical output, the multisegment photodetector including a plurality of photodetector regions configured such that one of the plurality of photodetectors regions intercepts a mode in a manner distinct from another of the plurality of photodetectors. The system also includes logic configured to receive a resultant signal output from the photodetector regions and provide forward error correction decoding of the resultant signal.

Abstract: A system is provided for decoding product codes. The system includes a processor configured with logic to generate syndromes for a first codeword test pattern and generate syndromes for subsequent codeword test patterns using a recursive function of the syndromes generated for a codeword test pattern previously generated.

Abstract: A system is described for decoding product codes. The system includes logic configured to pass reliability determinations made while decoding symbols using first parity information, to use in decoding the symbols using second parity information, while substantially simultaneously passing the reliability determinations made while decoding the symbols using the second parity information, to use in decoding the symbols using the first parity information.