中国激光
中國激光
중국격광
CHINESE JOURNAL OF LASERS
2009年
11期
2928-2933
,共6页
光环行器%误差自愈%高隔离度%光分插复用%光交叉互联
光環行器%誤差自愈%高隔離度%光分插複用%光交扠互聯
광배행기%오차자유%고격리도%광분삽복용%광교차호련
optical circulator error self-healing%high isolation%optical add/drop modular%optical cross-connects
针对现有光环行器内部元件之间存在的角度误差、各种同类异构光环行器不能消除半波片光轴取向误差所导致的隔离度降低、隔离度不一致以及安装调试繁琐等弊端,提出了一种减小或消除误差的双半波片光轴非对称结构方式,设计了一种误差自愈型高隔离度准四端口光环行器,通过理论分析、琼斯矩阵运算和数学软件MATLAB模拟,其插入损耗可达到已有光环行器最小性能指标,而隔离度可以提高5～8 dB.
針對現有光環行器內部元件之間存在的角度誤差、各種同類異構光環行器不能消除半波片光軸取嚮誤差所導緻的隔離度降低、隔離度不一緻以及安裝調試繁瑣等弊耑,提齣瞭一種減小或消除誤差的雙半波片光軸非對稱結構方式,設計瞭一種誤差自愈型高隔離度準四耑口光環行器,通過理論分析、瓊斯矩陣運算和數學軟件MATLAB模擬,其插入損耗可達到已有光環行器最小性能指標,而隔離度可以提高5～8 dB.
침대현유광배행기내부원건지간존재적각도오차、각충동류이구광배행기불능소제반파편광축취향오차소도치적격리도강저、격리도불일치이급안장조시번쇄등폐단,제출료일충감소혹소제오차적쌍반파편광축비대칭결구방식,설계료일충오차자유형고격리도준사단구광배행기,통과이론분석、경사구진운산화수학연건MATLAB모의,기삽입손모가체도이유광배행기최소성능지표,이격리도가이제고5～8 dB.
The present optical circulator has a variety of defects,such as,the angle errors among constituent components,its failing to eliminate the optical axis orientation errors of half-wave plate,and its complexity in installation and debugging.In order to overcome these shortcomings,we devise a dual-wave plate axis asymmetric structure which can reduce or even eliminates errors.Further,we design an error self-healing high-isolation quasi-four-port optical circulator based on the strucutre.Through theoretical analysis,Jones matrix calculation and MATLAB simulation,we find ita insertion loss is minimum among existing optical circulators,and the isolation can increase 5～8 dB.
