EFFECTIVENESS OF MODULATION FORMATS TO NONLINEAR EFFECTS IN OPTICAL FIBER TRANSMISSION SYSTEMS UNDER 160 GB/S DATA RATE

Modulation formats for multi-core fiber transmission.

We investigate high dimensional modulation formats for multi-core fibers (MCFs) and spatial superchannels. We show that the low skew variations between MCF cores maybe exploited to generate 'multi-core' formats that offer significant advantages over independently transmitting conventional 4-dimensional formats in each core. We describe how pulse position modulation formats may be transposed to ...

Explorations in Modulation Formats for Nonlinear DWDM Fiber Optic Communications

Rate 2/3 modulation code for suppression of intrachannel nonlinear effects in high-speed optical transmission

An efficient approach in suppressing of intrachannel nonlinear effects using modulation codes is proposed. Significant Q-factor improvement ranging from 7–13 dB depending on modulation format, extinction ratio and number of spans is demonstrated. The encoder design is described, and sliding window decoding logic is given.

Advanced Optical Modulation Formats and Their Comparison in Fiber-Optic Systems

This project started a few years ago and the initial scope of the research was mainly focused on the investigation of sub-carrier multiplexed (SCM) WDM optical systems. As directed by Sprint, during the course of the research, we have expanded our focus to other digital modulation formats for high-speed optical transmission and the comparison of the system performance in various fiber types. In...

High-speed optical fibre transmission using advanced modulation formats