Optical communications

Field Trial of a Novel SDN Enabled Network Restoration Utilizing In-Depth Optical Performance Monitoring Assisted Re-Planning

We experimentally demonstrate a monitoring scheme utilizing both intermediate node and receiver monitoring for network re-planning. Either modulation format switching or light-path re-routing is adopted for restoration. The recovered signal performs …

Demonstration of Space-to-Wavelength Conversion in SDM Networks

A scheme for the conversion of spatially-multiplexed channels to a wavelength superchannel is presented and characterized. The viability of deployment of this scheme at network nodes located at the boundaries between spatialdivision- multiplexed …

Software Defined Networking (SDN) over Space Division Multiplexing (SDM) Optical Networks: Features, Benefits and Experimental Demonstration

We present results from the first demonstration of a fully integrated SDN-controlled bandwidth-flexible and programmable SDM optical network utilizing sliceable self-homodyne spatial superchannels to support dynamic bandwidth and QoT provisioning, …

High Order Modulation Formats for Multi-Terabit Optical Communication Systems

This paper reviews some of the recent progress in research community in increasing the spectral efficiency of optical communication systems through the use of high order modulation formats and coherent detection techniques. Some of the possible ways …