CAJ | 학술논문

本文建立了偏分复用系统中偏振模色散与信号偏振态变化引起信道串扰的数学模型,分析了偏振模色散对偏分复用信道射频功率的影响,并提出了适用于偏分复用系统的光域偏振模色散补偿与偏分解复用同时进行的方案:用信道的射频功率作为反馈控制信号,监测链路中偏振模色散和偏振态变化引起的信道串扰的大小,用改进的粒子群优化算法对偏振控制器进行自适应控制,同时完成偏振模色散补偿与偏分解复用.在112 Gb/s偏分复用-差分正交相移键控(PDM-DQPSK)传输系统中仿真验证了该方案的有效性.结果表明该方案可以使112 Gb/s-PDM-DQPSK传输系统完成自适应偏分解复用的同时,在1 dB的光信噪比代价下,使系统对偏振模色散的容忍度提高20 ps.
본문건립료편분복용계통중편진모색산여신호편진태변화인기신도천우적수학모형,분석료편진모색산대편분복용신도사빈공솔적영향,병제출료괄용우편분복용계통적광역편진모색산보상여편분해복용동시진행적방안:용신도적사빈공솔작위반궤공제신호,감측련로중편진모색산화편진태변화인기적신도천우적대소,용개진적입자군우화산법대편진공제기진행자괄응공제,동시완성편진모색산보상여편분해복용.재112 Gb/s편분복용-차분정교상이건공(PDM-DQPSK)전수계통중방진험증료해방안적유효성.결과표명해방안가이사112 Gb/s-PDM-DQPSK전수계통완성자괄응편분해복용적동시,재1 dB적광신조비대개하,사계통대편진모색산적용인도제고20 ps.
A model of polarization mode dispersion (PMD) and state of polarization (SOP) variation induced coherent crosstalk is established in a polarization division multiplexing system. The properties of radio frequency power of one channel in the presence of PMD are investigated. A combined scheme of PMD compensation and polarization de-multiplexing in optical domain is proposed, which is based on monitoring of the feedback signal of RF power. A modified particle swarm optimization algorithm is also used for the adaptive polarization control. The validity of the PMD compensation and polarization de-multiplexing scheme proposed here is demonstrated in a 112Gb/s-PDM-DQPSK simulation system. Results show that the PMD tolerance of the transmission system is increased by 20 ps with 1 dB OSNR margin and the channel separation is accomplished as well.