Comparison of phase modulation formats for 40 Gb/s ultralong-haul systems

Bo Lei; Huijian Zhang; Wanyi Gu

doi:10.1117/12.635657

9 December 2005 Comparison of phase modulation formats for 40 Gb/s ultralong-haul systems

Bo Lei, Huijian Zhang, Wanyi Gu

Proceedings Volume 6021, Optical Transmission, Switching, and Subsystems III; 60212A (2005) https://doi.org/10.1117/12.635657
Event: Asia-Pacific Optical Communications, 2005, Shanghai, China

Abstract

This paper studies advanced optical phase modulation formats in 40Gb/s Ultra-long-haul systems. As well known, the performance of 40Gb/s Ultra-long-haul systems depends upon the modulation formats. Since DPSK modulation format has higher spectral efficiency and more tolerance to fibre nonlinearity induced impairment, different duty cycle has important impact on result. In this letter, we comprehensively analyzed the transmitting performances of optical phase modulation formats with using the eye-opening penalty (EOP). NRZ-DPSK, full frequency modulated RZ-DPSK (FullRZ-DPSK), half frequency modulated RZ-DPSK (HalfRZ-DPSK) and CSRZ-DPSK modulation formats was numerical simulated within four kinds fiber system: G.652 Fiber, True Wave fiber (TW), True Wave-Reduced Slope fiber (TW-RS) and Large Effective Area Fiber (LEAF). Through modelling and simulation, we compute the EOP of these phase modulation formats, with different average optical input power. The numerical simulation result shows thatCSRZ-DPSK is best performance in all phase modulation, and G.652 outperforms other types of fibers in 40Gb/s Ultra-long-haul systems.

Citation Download Citation

Bo Lei, Huijian Zhang, and Wanyi Gu "Comparison of phase modulation formats for 40 Gb/s ultralong-haul systems", Proc. SPIE 6021, Optical Transmission, Switching, and Subsystems III, 60212A (9 December 2005); https://doi.org/10.1117/12.635657

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