Abstract:
Different modulation formats are being used to mitigate either the PMD or the nonlinear effects. CSRZ-DPSKandCSRZ-DQPSKsystemsshowhighsuitabilityforultra-highspectralefficientDWDMsystemsandhighresiliencetodispersioncompensationtolerancesand fibernonlinearitiesbutacorrectpictureoftheirperformanceisabsent. Asthesymbolrateis reduced, the spectral width is also significantly reduced. A DQPSK signal at bit rate B has thesamespectralwidthasanOOKsignalatbit rateB/2, forRZwaveforms. Wehavemade an effort to quantify the effectiveness of CSRZ-DPSK and CSRZ-DQPSK in compensating PMD and also to find out their correlation. DQPSK has shown better PMD tolerance since it has the ability to double the spectral efficiency and relaxed dispersion management. We simulated single channel as well as multichannel optical fiber communication systems with varyingparameters. Theperformancesofthesystemsareevaluatedwithhighaswellaslow PMD coefficients in the presence or absence of nonlinear effects. The performance of the systems will be evaluated mainly in terms of graphical representations.
Description:
We are thankful to Almighty Allah for his blessings for the successful completion of our thesis. Our heartiest gratitude, profound indebtedness and deep respect go to our supervisor Lieutenant Colonel Kazi Abu Taher, Instructor Class-‘A’, Department of Computer Science and Engineering, Military Institute of Science and Technology, Dhaka, Bangladesh, for his constant supervision, affectionate guidance and great encouragement and motivation. His keen interest on the topic and valuable advices throughout the study was of great help in completing thesis.
We are especially grateful to the Department of Computer Science and Engineering (CSE) of Military Institute of Science and Technology (MIST) for providing their all out support during the thesis work.
Finally, we would like to thank our families and our course mates for their appreciable assistance, patience and suggestions during the course of our thesis.
