Report Date: September 20, 2006
Inventors: University of North Carolina, Charlotte, USA and Dr B R Ambedkar National Institute of Technology (Deemed University) Jalandhar, India
Inventors: Dr. M. Yasin Akhtar Raja, Professor, Physics and Optical Science Department Center for Optoelectronics & Optical Communications, UNC Charlotte, NC 28223-0001, USA.

Dr. Ajay K Sharma, Professor Electronics and Communication Engineering Department

Dr B R Ambedkar National Institute of Technology  (Deemed University), Jalandhar-144011, Punjab, India:
Title of Invention: “A Novel Method of FWM Suppression for DWDM and WDM Optical Transmission Links”
Invention Abstract: We have proposed a novel method by using alternate channel negative and positive pre-chirped laser (±0.6) source to reduce the impact of FWM in 8-channel DWDM and WDM transmission link. It is shown that there is significant improvement in the FWM suppression by using the proposed method.
Field of the Invention: The invention relates to a method of reducing transmission impairments due to four-wave mixing in Dense and Course wavelength-division multiplexed optical systems and networks, and more particularly the invention relates to the alternate channel positive and negative pre-chirped laser source/modulator so that the impairments due to the four-wave mixing are reduced.
Potential Markets: The present invention shall provide a method of enhancing the performance of wavelength-division multiplexed optical networks that suffer from degradation due to four-wave mixing. In particular, it is the object of the present invention to provide a method of increasing the capacity of such systems in a simple and cost-effective manner and to implement such methods in optical communication networks. Therefore the potential markets for this invention will be telecommunication sector and other information network service providers across the globe
Competition: The all known competing approaches to solve the FWM problem. But many methods of FWM suppression suffer from several drawbacks that limit their ability to enhance system capacity in an efficient and reliable manner.