Optical Transceiver Aggregating OTUk Frames for 100 GbE
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Solution Overview
Problem
Current optical transceivers face challenges in supporting higher bit rate interfaces like 100 Gb/s while providing the benefits of Optical Transport Network (OTN) framing, forward error correction, and management for parallelized signals, which are typically handled at lower speed levels.
Innovation Solution
The development of an optical transceiver that frames and manages multiple Optical Channel Transport Unit layer k (OTUk) signals as a single virtualized OTN signal, incorporating OTN type OAM and Forward Error Correction attributes, allowing for the aggregation of 10 OTU2s or OTU2es to form a single 100 Gigabit Ethernet (100 GbE) signal, and integrates framing, error correction, and management functions within existing circuitry to support higher speed aggregate signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If optical transceivers use parallelized signals (10×10 Gb/s or 4×25 Gb/s) to achieve higher bit rates, then transmission capacity is improved, but the ability to provide OTN framing, forward error correction, and management functions deteriorates
Solution Approach 1:
The optical transceiver is designed to perform multiple functions simultaneously: it handles parallelized signal transmission (10×10 Gb/s or 4×25 Gb/s) while also providing OTN framing, forward error correction, and management capabilities. The device integrates both the parallel signal processing paths and the OTN layer 2 framing functions within a single transceiver unit, enabling it to serve dual purposes of high-capacity transmission and reliable OTN protocol implementation.
2Reliability
If separate equipment is added to provide OTN management for parallelized signals, then OTN functionality is improved, but device complexity increases
Solution Approach 1:
The patent combines previously separate functions into a single integrated optical transceiver. The OTN framing, forward error correction, and management functions that would traditionally require separate equipment are merged directly into the optical transceiver unit. This integration eliminates the need for additional external devices while maintaining full OTN capability for parallelized signals.
Solution Approach 2:
The optical transceiver is designed as a multi-functional device that simultaneously provides high-capacity parallel signal transmission and complete OTN layer 2 framing and management. By making the transceiver universal enough to handle both roles, the system avoids complexity from multiple specialized devices while maintaining reliability through integrated OTN functions.
Data Source
AI summary
The present disclosure provides an optical transceiver, method of mapping, and method of management utilizing a plurality of Optical Channel Transport Unit layer k (OTUk) links to form an aggregate signal, such as, for example, 10 OTU2s to provide a single 100 Gigabit Ethernet (100 GbE) signal. Specifically, the present invention enables use of existing circuitry and methods at lower speed signals, e.g. 10 G, to support higher speed aggregate signals, e.g. 100 G. The present invention may be utilized to support carrier-grade OTN applications with optical transceivers such as, for example, pluggable optical transceivers. In an exemplary embodiment, the present invention includes a method which receives a plurality of signals, frames each of the plurality of signals into an OTUk frame, and manages/monitors each of the plurality of signals in an OTUk frame in the aggregate.