Periodic Reporting for period 2 - FUN-NOTCH (Fundamentals of the Nonlinear Optical Channel)
Reporting period: 2019-07-01 to 2020-12-31
In WP1 and WP2, a new mathematical model has been developed. In WP3, we have mainly focused on the analysis of maximum transmission rates (or bounds thereof) of soliton-based communication systems. In WP4, we have made multiple contributions to the areas of channel coding and signal shaping. We pioneered the use of low-complexity (finite-blocklength) probabilstic shaping based on the idea of enumerative sphere shaping. We also developed new algorithms that combine soft and hard decisions from the optical channel. These algorithms have the potential to be used in next-generation ultra-high speed optical transponders. Finally, we have experimentally validated all the three new transceiver designs described above (from WP4) in the context of WP5.
The expected results until the end of the project are to continue developing new channel models and transceivers as well as validating these in optical experiments. Now that we have made progress on the channel modeling aspects of the problem, we also expect to start producing more results in the information-theoretic aspects of the project (WP3).