Performance Optimization of Carving Signal RZ-DQPSK Modulation Scheme
This paper depicts a modified return-to-zero differential quadrature phase shift keying (RZ-DQPSK) modulation scheme. A simulative analysis has been performed for an optimization of the proposed scheme. The analysis has also been extended for two different types of commercial fibers; standard single-mode fiber (SSMF) and true wave-reduced slope (TW-RS) fiber to report the similar qualitative performance characteristics. For the sake of better understanding of the proposed modified carving signal RZ-DQPSK scheme, optical spectrum and eye pattern plots are also investigated.
KeywordsReturn-to-zero differential quadrature phase shift keying (RZ-DQPSK) True wave-reduced slope fiber (TW-RS) Bit error rate (BER) Quality factor Eye pattern
Authors are highly thankful to the institute Motilal Nehru National Institute of Technology, Allahabad, for providing licensed simulation software “RSOFT OPTSIM.”
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