红外与激光工程
紅外與激光工程
홍외여격광공정
INFRARED AND LASER ENGINEERING
2015年
1期
195-200
,共6页
偏振态发生器%Stokes参量%连续变量相干光通信%TS算法
偏振態髮生器%Stokes參量%連續變量相榦光通信%TS算法
편진태발생기%Stokes삼량%련속변량상간광통신%TS산법
PSG%Stokes parameters%continuous variables coherent optical communication%TS algorithm
设计了一种三波片型偏振态发生器(PSG)，分析PSG的结构特点，导出了Stokes参量的变换关系。基于禁忌搜索(Tabu Search，TS)算法原理，提出了一种既能实现偏振态的快速变换又能降低晶体两端电压的控制算法。仿真结果表明，采用该控制算法，PSG能够将输入的线偏光转换为任意偏振光，绝对精度可达0.07%。如果把Stokes参量S2和S3限定在Poincare球的特定区域内，通过该控制算法可产生所需的偏振态并保证控制电压大小在120 V以内。最后，通过实验验证该算法能够满足单光束连续变量相干光通信编码的需要。
設計瞭一種三波片型偏振態髮生器(PSG)，分析PSG的結構特點，導齣瞭Stokes參量的變換關繫。基于禁忌搜索(Tabu Search，TS)算法原理，提齣瞭一種既能實現偏振態的快速變換又能降低晶體兩耑電壓的控製算法。倣真結果錶明，採用該控製算法，PSG能夠將輸入的線偏光轉換為任意偏振光，絕對精度可達0.07%。如果把Stokes參量S2和S3限定在Poincare毬的特定區域內，通過該控製算法可產生所需的偏振態併保證控製電壓大小在120 V以內。最後，通過實驗驗證該算法能夠滿足單光束連續變量相榦光通信編碼的需要。
설계료일충삼파편형편진태발생기(PSG)，분석PSG적결구특점，도출료Stokes삼량적변환관계。기우금기수색(Tabu Search，TS)산법원리，제출료일충기능실현편진태적쾌속변환우능강저정체량단전압적공제산법。방진결과표명，채용해공제산법，PSG능구장수입적선편광전환위임의편진광，절대정도가체0.07%。여과파Stokes삼량S2화S3한정재Poincare구적특정구역내，통과해공제산법가산생소수적편진태병보증공제전압대소재120 V이내。최후，통과실험험증해산법능구만족단광속련속변량상간광통신편마적수요。
A three-plate-type polarization state generator (PSG) was designed and the transformation of Stokes parameters was derived according to the structure characteristics of PSG. Based on the principle of Tabu Search (referred to as TS) algorithm, a control algorithm was proposed which was able to not only achieve the rapid transformation between the polarization states but also reduce the bias-voltage across the crystal. The simulation results show that, by using this control algorithm, the PSG can transform the linear polarization into arbitrary polarization and the precision can arrive to 0.07%. If the Stokes parameter S2 and S3 were restricted to the specific region on the Poincare sphere, the desired polarization state was generated by this control algorithm and the control voltage amplitude was ensured within 120 V. Last, the experimental results show that, this control algorithm could satisfy the requirement of encoding in continuous variables coherent optical communication of single beam.
