激光技术
激光技術
격광기술
LASER TECHNOLOGY
2014年
2期
191-195
,共5页
光通信%空间光耦合%模拟退火算法%耦合效率
光通信%空間光耦閤%模擬退火算法%耦閤效率
광통신%공간광우합%모의퇴화산법%우합효솔
optical communication%space optical coupling%simulated annealing algorithm%coupling efficiency
为了使空间光-光纤耦合结构具有一定的抗抖动能力，采用自聚焦透镜和多模光纤耦合阵列结构结合模拟退火算法对光纤阵列实行2维控制，自动搜寻空间光-光纤耦合最佳视轴对准姿态。对光纤阵列和模拟退火算法进行了理论分析实验验证，取得了耦合效率变化的相关数据。结果表明，通过模拟退火算法可以实现空间光-光纤视轴对准，且光斑中心在耦合端面中心抖动小于2．5mm时，耦合功率波动小于35％，满足无线激光通信系统的要求。
為瞭使空間光-光纖耦閤結構具有一定的抗抖動能力，採用自聚焦透鏡和多模光纖耦閤陣列結構結閤模擬退火算法對光纖陣列實行2維控製，自動搜尋空間光-光纖耦閤最佳視軸對準姿態。對光纖陣列和模擬退火算法進行瞭理論分析實驗驗證，取得瞭耦閤效率變化的相關數據。結果錶明，通過模擬退火算法可以實現空間光-光纖視軸對準，且光斑中心在耦閤耑麵中心抖動小于2．5mm時，耦閤功率波動小于35％，滿足無線激光通信繫統的要求。
위료사공간광-광섬우합결구구유일정적항두동능력，채용자취초투경화다모광섬우합진렬결구결합모의퇴화산법대광섬진렬실행2유공제，자동수심공간광-광섬우합최가시축대준자태。대광섬진렬화모의퇴화산법진행료이론분석실험험증，취득료우합효솔변화적상관수거。결과표명，통과모의퇴화산법가이실현공간광-광섬시축대준，차광반중심재우합단면중심두동소우2．5mm시，우합공솔파동소우35％，만족무선격광통신계통적요구。
In order to improve anti-jitter capability of a fiber coupling structure , a fiber array with self-focusing lens was designed , the optical fiber array was controlled by means of annealing algorithm and the optimal visual axis alignment position was found .The fiber array and simulated annealing algorithm were analyzed theoretically , and the data of coupling efficiency was achieved .Experimental results show that the simulated annealing algorithm can find the optimal visual axis alignment position.When spot center moving less than 2.5mm on the coupling surface , the power coupled in the fiber fluctuates less than 35%.It can meet the requirements of free space optical communication system .
