CPC H04B 10/63 (2013.01) [H04B 10/27 (2013.01); H04B 10/40 (2013.01); H04B 10/516 (2013.01); H04B 10/61 (2013.01); H04B 10/616 (2013.01); H04B 10/6164 (2013.01); H04J 14/02 (2013.01); H04J 14/06 (2013.01); H04L 12/2885 (2013.01)] | 20 Claims |
1. An interface subsystem for a physical layer of a coherent optical access network, comprising:
a pre-interface portion (a) in operable communication with first and second separate input 100 GbE electrical signals from a host side of the coherent optical access network, and (b) including:
(i) a first optical transport network (OTN) framing unit configured to generate first and second frame structures for the first and second separate input 100 GbE electrical signals, respectively, and individually process the first and second input 100 GbE electrical signals with the first and second frame structures to output first and second 100G frame structures, respectively;
(ii) a first interleaver configured to aggregated the first and second 100G frame structures into a dual-100G frame structure and interleave the dual-100G frame structure into a single-output 200G frame structure; and
(iii) a forward error correction (FEC) encoder configured to integrate, in a continuous operation, open FEC (oFEC) onto each 100G frame structure portion of the single-output 200G frame structure;
an electrical interface portion (a) disposed within the physical layer of the coherent optical access network, (b) in operable communication with the pre-interface portion, and (c) including a digital-to-analog converter (DAC) configured to receive the single-output 200G frame structure; and
an optical interface portion (a) in operable communication with the electrical interface portion and a coherent optical transceiver proximate the interface subsystem opposite the optical interface portion, and (b) configured (i) to convert an output from the DAC into a 200G optical signal, and (ii) for optical transport of the 200G optical signal to and from the coherent optical access network by way of an optical transport medium coupled to the interface subsystem.
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