红外与激光工程
紅外與激光工程
홍외여격광공정
INFRARED AND LASER ENGINEERING
2013年
8期
1997-2002
,共6页
光学相控阵%光波导%半波电压%扫描角
光學相控陣%光波導%半波電壓%掃描角
광학상공진%광파도%반파전압%소묘각
optical phased array%optical waveguide%half-voltage%steering angle
基于光学相控阵理论和钛扩散铌酸锂光波导的导模特性，提出了一种新型阵列集成光波导应用于光学相控。根据光束传输法(BPM)，并结合现有半导体工艺水平及参数，对该阵列波导的导光特性，损耗特性以及耦合特性进行了仿真计算，最终给出了相控阵的结构设计参数。结果表明，应用该集成阵列波导的光学相控阵结构可实现光束连续精确定向偏转，偏转角度可达依4.5o，相位控制半波电压小于6 V，其系统光学控制单元损耗低且响应速度快。
基于光學相控陣理論和鈦擴散鈮痠鋰光波導的導模特性，提齣瞭一種新型陣列集成光波導應用于光學相控。根據光束傳輸法(BPM)，併結閤現有半導體工藝水平及參數，對該陣列波導的導光特性，損耗特性以及耦閤特性進行瞭倣真計算，最終給齣瞭相控陣的結構設計參數。結果錶明，應用該集成陣列波導的光學相控陣結構可實現光束連續精確定嚮偏轉，偏轉角度可達依4.5o，相位控製半波電壓小于6 V，其繫統光學控製單元損耗低且響應速度快。
기우광학상공진이론화태확산니산리광파도적도모특성，제출료일충신형진렬집성광파도응용우광학상공。근거광속전수법(BPM)，병결합현유반도체공예수평급삼수，대해진렬파도적도광특성，손모특성이급우합특성진행료방진계산，최종급출료상공진적결구설계삼수。결과표명，응용해집성진렬파도적광학상공진결구가실현광속련속정학정향편전，편전각도가체의4.5o，상위공제반파전압소우6 V，기계통광학공제단원손모저차향응속도쾌。
Based on the theory of the optical phased array (OPA) and behavior of the mode propagation in Ti-diffused Lithium Niobate (Ti_LiNbO3) waveguide, a novel array of integrated optical waveguides applied in OPA system was proposed. According to the beam propagation method (BPM) and the existing semiconductor technology and parameters, optical characteristics of the waveguide array, loss characteristics, and coupling characteristics were simulated. The structure of phased array parameters was presented. Simulation result shows that the OPA based on the array of integrated optical waveguides performs well. This array of integrated optical waveguides can steer consequently and precisely with the steering angle of more than ±4.5o. The half-wave voltage is less than 6 V, and the control unit has low loss and quick response.
