Impact of phase noise, chromatic dispersion and non-linear effects on 10 Gb/s optical differential quadrature phase shift keying (oDQPSK) systems

被引：0

作者：

Gené, JM ^{[1
]}

Soler, M ^{[1
]}

Cabré, A ^{[1
]}

Killey, RI ^{[1
]}

Prat, J ^{[1
]}

机构：

[1] Univ Politecn Catalunya, Dept Signal Theory & Commun, ES-08034 Barcelona, Spain

来源：

OPTICAL TRANSMISSION SYSTEMS AND EQUIPMENT FOR WDM NETWORKING II | 2003年 / 5247卷

关键词：

coherent systems; chromatic dispersion; cross-phase modulation; differential reception; four-wave mixing; phase noise; self-phase modulation; spectral efficiency;

D O I：

10.1117/12.511170

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The impact of phase noise, chromatic dispersion and non-linear effects on a 10 Gb/s Optical Differential Quaternary Phase Shift Keying (oDQPSK) system has been evaluated by means of computer simulation. Both single channel and multiple WDM channels have been considered. The results show that these systems present a high spectral efficiency that allows a reduced channel spacing as low as 25 MHz. Furthermore, this effect leads to an increase on dispersion tolerance together with a non-linear effects robustness due to the signal constant envelope characteristics. Finally, some relevant results have been found concerning the laser linewidth requirements (less than 10 MHz). Simulations show that phase noise can be the limiting factor of oDQPSK systems.

引用

页码：321 / 328

页数：8

共 31 条

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