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Adaptive Optical Networks

University College Cork


Brief of Description of Project

The proposed research project will integrate with the efforts of the PSG team and current  research  funding  aiming  towards  a  flexible  network  environment.  The  goal  will  be  to  investigate possible implementations to allow for an adaptive bandwidth configuration in  existing legacy infrastructure, especially with the increasing demands for high capacity  solutions in optical networks. As “Superchannels”, or all‐optical OFDM or Coherent WDM,  are likely to be implemented for capacities beyond 1Tbit/s, a flexible network should be  capable to adapt between the coexistent 10, 40, 100 and 1Tbit/s+ signals. In this project we  will investigate possible solutions for this, using optical signal processing. By keeping the  subcarrier baud rate <40Gbaud, impairments such as nonlinearities and polarisation mode  dispersion should be minimised.  Additionally, low symbol rates enable potentially energy  efficient all‐optical signal processing by semiconductor optical amplifiers which possess  very strong optical nonlinearities triggered by low input powers. 

Description of facilities and research environment

PSG has a state‐of‐the‐art high speed telecom labs, with testbeds for Access, Metro and Long‐Haul  (Core)  communications,  including  equipment such  as  12GS/s  AWG,  >10GS/s DPO, testsets  ranging  from  2.5  to  50Gbit/s,  75GHz  sampling  scopes,  EDFAs,  OSAs, DAC/ADC, FPGAs, WSS, recirculating loops, and more (https://www.tyndall.ie/node/1811). 

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