Precompensation for Narrow Optical Filtering of 10-Gb/s Intensity Modulated Signals

Signals in spectrally efficient optical networks can be distorted by the narrowing of the overall bandwidth that occurs when optical add-drop multiplexers are concatenated. In this letter, it is demonstrated that the performance implications of this bandwidth narrowing can be mitigated by precompensation using arbitrary optical waveform generation. The synthesis of the required voltage waveforms for a dual-drive Mach-Zehnder modulator reduces the penalty in receiver sensitivity due to narrow optical filtering from 6.5 to 1.9 dB. Simultaneous precompensation for fiber dispersion is also demonstrated.

[1]  M. O'Sullivan,et al.  Electrical domain compensation of optical dispersion [optical fibre communication applications] , 2005, OFC/NFOEC Technical Digest. Optical Fiber Communication Conference, 2005..

[2]  Andrew C. Singer,et al.  Electronic dispersion compensation , 2008, IEEE Signal Processing Magazine.

[3]  Ioannis Tomkos,et al.  Transparent ultra-long-haul DWDM networks with "broadcast-and-select" OADM/OXC architecture , 2003 .

[4]  Ioannis Tomkos,et al.  Transparent ultra-long-haul DWDM networks with (quote)broadcast-and-select(quote) OADM/OXC architecture , 2003 .

[5]  P. Bayvel,et al.  Electronic dispersion compensation by signal predistortion using digital Processing and a dual-drive Mach-Zehnder Modulator , 2005, IEEE Photonics Technology Letters.

[6]  M. Rubsamen,et al.  MLSE receivers for narrow-band optical filtering , 2006, 2006 Optical Fiber Communication Conference and the National Fiber Optic Engineers Conference.

[7]  S. Chandrasekhar,et al.  Analysis of loss ripple and its application to the mitigation of optical filtering penalty , 2005, IEEE Photonics Technology Letters.

[8]  M. O'Sullivan,et al.  Electronic precompensation of optical nonlinearity , 2006, IEEE Photonics Technology Letters.

[9]  M. O'sullivan,et al.  Electrical Domain Compensation of Optical Dispersion , 2005 .

[10]  M. Usami,et al.  Mitigation of signal degradation due to cascaded filters by optical 3R regeneration at 40 Gb/s , 2005 .

[11]  J. Hurley,et al.  Experimental Measurements of the Effectiveness of MLSE against Narrowband Optical Filtering Distortion , 2007, OFC/NFOEC 2007 - 2007 Conference on Optical Fiber Communication and the National Fiber Optic Engineers Conference.