Nonlinear optical parametric processes like four-wave mixing (FWM) finds wide array of applications from spectroscopy, metrology and quantum optics to optical communication. In optical communication, FWM is used for parametric and phase sensitive amplification, regeneration, wavelength conversion and implementation of logic gates. FWM for wavelength conversion is very attractive because of the properties of FWM like transparency to bit-rate and modulation format. Since wavelength conversion involves switching of data from one wavelength to another and optical networks encode data into amplitude, phase and polarization of the signal, it is very important to understand the impact of FWM on these three properties of an optical signal. More importantly, it is essential to understand the signal quality degradation of the wavelength converted signal generated by a FWM process. This talk aims at presenting the theoretical and experimental insights into the impact of FWM on the signal quality when it is used for wavelength conversion. The understanding acquired about the impact of FWM on the signal quality will be utilized to present ways to mitigate the signal degradation.
Aravind Anthur obtained his under graduate degree from Amrita Vishwa Vidyapeethom, Kerala in Electronics and Communication engineering in 2009. He did his undergraduate project in Amrita Research labs. He then joined for Masters by research program in the Department of Electrical Engineering, Indian Institute of Technology Madras in 2009. He converted to PhD in 2011 and completed the same in 2014. During his PhD he worked in the Radio and Optics lab of the school of electronic engineering, in the Dublin City University, Ireland, in 2012 and in 2013, with scholarship from Science Foundation Ireland and European Union. He joined Tejas Networks Ltd. Bangalore as Senior Engineer, CTO-Office Tech from 2014 to 2015. Aravind joined Radio and Optics lab of DCU in July 2015 as a Post-Doctoral Fellow where he is involved in European Union, intra-Ireland and Ireland-USA collaborative projects. He was a visiting research in the College of Optical Sciences, University of Arizona for two months during 2015 and 2016. He will be a visiting researcher in Centre of Excellence, Sterlite Technologies Ltd. Aurangabad during Dec, 2016.