Paper
8 December 2005 Comparison of DQPSK and QDPASK transmissions in 80- Gb/s optical communication systems
Chuanchuan Yang, Ziyu Wang
Author Affiliations +
Proceedings Volume 6021, Optical Transmission, Switching, and Subsystems III; 60213O (2005) https://doi.org/10.1117/12.633948
Event: Asia-Pacific Optical Communications, 2005, Shanghai, China
Abstract
In this paper we compare differential quadrature phase-shift-keying (DQPSK) and quaternary differential phase amplitude-shift-keying (QDPASK) transmissions in 80Gb/s optical communication systems with highly nonlinear fiber (HNLF) channel and evaluate their tolerance against channel nonlinearity and receiver interferometer phase error (IPE). The results show that QDPASK signal has better receiver IPE tolerance while DQPSK signal has better channel nonlinearity tolerance. The performance of DQPSK system is better than QDPASK system only when IPE is not serious.
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Chuanchuan Yang and Ziyu Wang "Comparison of DQPSK and QDPASK transmissions in 80- Gb/s optical communication systems", Proc. SPIE 6021, Optical Transmission, Switching, and Subsystems III, 60213O (8 December 2005); https://doi.org/10.1117/12.633948
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KEYWORDS
Receivers

Interferometers

Phase interferometry

Telecommunications

Tolerancing

Modulation

Optical communications

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