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Investigation of Four-Wavelength Regenerator Using Polarization- and Direction-Multiplexing

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8 Author(s)
Provost, L. ; Optoelectron. Res. Centre, Southampton Univ., Southampton ; Parmigiani, F. ; Petropoulos, P. ; Richardson, D.J.
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We demonstrate a four-channel extension to the Mamyshev regenerator and investigate its potential for the simultaneous processing of 4 times 10 Gb/s return-to-zero wavelength division-multiplexed channels. Mitigation of the interchannel nonlinearities is achieved through the rapid walkoff induced by both the large differential group delay of a specially developed polarization maintaining highly nonlinear fiber and a bidirectional architecture. Numerical and experimental results demonstrate the reduction of interchannel crosstalk as well as the potential of the scheme for 2R regeneration.

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Photonics Technology Letters, IEEE  (Volume:20 ,  Issue: 20 )