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基于DPSK的新型调制格式在高速光纤传输系统中的应用

基于波分复用(WDM)的光纤通信技术的飞速发展,给整个通信结构带来了革命性变化。随着大容量、长距离密集波分复用(DWDM)系统研究的不断深入,各种限制因素的影响也逐渐变大。与此同时,各种用于克服这些限制因素的关键技术也应运而生,其中采取新型的调制编码方式即是最为有效的手段之一。论文通过建立系统仿真平台,对各种基于差分相移键控(DPSK)的调制格式在40×40Gb/s DWDM传输系统中的性能进行了研究。论文主要工作如下:1、基于DPSK新型调制格式的系统设计对40×40Gb/s的DWDM传输系统进行了深入的研究,详细分析了NRZ-DPSK、RZ-DPSK、CSRZ-DPSK等几种新型调制格式在SMF28、LEAF、TrueWave RS、PureGuide四种光纤和不同色散管理方案下的系统传输性能并对几种调制格式进行了比较。仿真结果表明不同调制格式下光纤种类的选择取决于系统的要求,最优码型的选取也要取决于系统配置,在实际系统设计  (本文共63页) 本文目录 | 阅读全文>>

《Chinese Physics Letters》2015年11期
Chinese Physics Letters

Experimental Investigation of All-Optical NRZ-DPSK to RZ-DPSK Format Conversion Based on TOAD

We propose and experimentally demonstrate a novel all-optical non-return-to-zero differential-phase-shift-keying(NRZ-DPSK) to return-to-zero differential-phase-shift-keying(RZ-DPSK) format conversion scheme.This scheme is based on the terahertz optical asymmetric demultiplexer(TOAD).A 10Gb/s...  (本文共4页) 阅读全文>>

《Optoelectronics Letters》2016年06期
Optoelectronics Letters

PDM-DPSK-MPPM hybrid modulation for multi-hop free-space optical communication

A hybrid polarization division multiplexed-differential phase shift keying-multipulse pulse position modulation(PDM-DPSK-MPPM) scheme for multi-hop free-space optical(FSO) communication is investigated. The analytical bit error rate(BER) of the proposed system in Gamma-Gamma turbulence channels is derived and verified using computer simulation. Th...  (本文共5页) 阅读全文>>

《贵阳学院学报(自然科学版)》2017年01期
贵阳学院学报(自然科学版)

基于DPSK载波通信的远程抄表系统的应用与研究

本文针对低压电力线远程抄表系统的传输过程,从提高数据通信的成功率出发,提出了基于DPSK载波通信的...  (本文共5页) 阅读全文>>

《Chinese Physics Letters》2017年10期
Chinese Physics Letters

Multi-Channel NRZ/RZ-DPSK to CSRZ-DPSK Format Conversion Based on Nonlinear Polarization Rotation of SOA

We present an all-optical nonreturn-to-zero/return-to-zero(NRZ/RZ) to carrier-suppressed return-to-zero(CSRZ)format conversion scheme for differential phase-shift ke.ying(DPSK) signals. The conversion is based on nonlinear polariza...  (本文共5页) 阅读全文>>

《Optoelectronics Letters》2011年02期
Optoelectronics Letters

Study on 8DPSK of multi-phase modulation technology based on CSRZ

A new modulation format in optical fiber communication system, the eight differential phase shift keying (8DPSK) of multi-phase modulation technology based on carrier-suppressed return-to-zero (CSRZ) is proposed in this paper. The formulae of CSRZ-8DPSK modem methods are derived theoretically ...  (本文共3页) 阅读全文>>