简介：WeproposeaschemeformitigatingRayleighbackscatteringnoiseanddemodulatingdifferentialphaseshiftkeying(DPSK)signalsinwavelength-division-multiplexedpassiveopticalnetworks(WDM-PONs)withinjection-lockedFabry-Perotlaserdiodes(FP-LDs).SignaldemodulationandwavelengthconversionaresimultaneouslyrealizedonthebasisofthefrequencydeviationandredshiftoflongitudemodesintheFP-LDs.Experimentalresultsdemonstratethatthedemodulationandwavelengthconversionof2.5-Gb/sDPSKsignalsareachieved.Apowerpenaltyofabout1.6dBatabiterrorrateof109ismeasuredaftertransmissionover25-kmsinglemodefiber.

简介：Theanalyticalexpressionofbiterrorprobabilityinabalanceddifferentialphase-shiftkeying(DPSK)opticalreceiverconsideringnonlinearphasenoiseandEDFAASEnoiseisgiven,whichisveryusefultoestimatetheperformanceofDPSKbalancedandunbalancedreceiverinopticalcommunicationsystem.Throughanalysis,ifonlynonlinearphasenoiseisconsidered,boththebalanceandunbalancedreceivershavethesameperformances.ButifaddingtheASEnoiseofEDFA,thebalancedreceiverisbetter.

简介：分析了DPSK调制格式的产生方式和频域特性,在分别考虑色散、PMD和非线性效应的情况下,通过求解非线性薛定谔方程,仿真了NRZ-DPSK,33%RZ-DPSK,50%RZ-DPSK和CSRZ-DPSK调制格式在40Gbit/s单信道中的传输特性.仿真结果表明,在单独考虑色散和PMD的情况下,33%RZ-DPSK调制格式特性较好,在综合考虑色散、PMD和非线性效应情况下,CSRZ-DPSK调制格式特性更好.

简介：美国网络基础设施供应商Xtera宣布，巴西电信运营商0i旗下子公司、面向南美市场的国际领先的传输和容量批发运营商GlobeNet选择了Xtera的NXT20Gbit／sDPSK技术用于海底网络升级。NXT系统提供先进的监控性能，可支持系统的快速故障响应，降低能耗，提供可靠性更高且可升级的蛤壳电路组件，并与NEBS第4地震带标准兼容。GlobeNet利用Xtera技术将其海底网络容量提升至360Gbps，升级工作将于2009年8月完成。

简介：我们试验性地表明并且分析10Gbit/s完整的双波长部门multiplexing被动光网络(WDM-PON)系统。non-return-to-zero调音的微分阶段移动(NRZ-DPSK)调整技术首先为downlink方向被利用，然后downlink信号每隧道与10Gbit/s的数据率用调音的开关(OOK)的紧张调整技术为uplink方向被重新调制。一个有效无色WDM-PON完整的双传播系统与低力量惩罚在25km的距离上与60GHz的隧道间距每隧道为10Gbit/s的数据率被完成。

简介：Wepresentanovelcoherenttransceiverforopticaldifferentialphase-shiftkeying/differentialquadraturephase-shiftkeying（DPSK/DQPSK）signalsbasedonheterodynedetectionandelectricaldelayinterferometer.Asimulationframeworkisprovidedtopredictatheoreticalsensitivitylevelforthereportedscheme.Highsensitivityof-45.18dBmisachievedfor2.5-Gb/sreturn-to-zero（RZ）-DPSKsignal,andhighsensitivitiesof-36.83dBm（Itributary）and-35.90dBm（Qtributary）areobservedfor2.5-GBaud/sRZ-DQPSKsignalinback-to-backconfiguration.Transmissionforbothsignalsover100kmisalsoinvestigated.Experimentalresultsarediscussedandanalyzed.