光子学报
光子學報
광자학보
ACTA PHOTONICA SINICA
2008年
1期
1-5
,共5页
导波光学%波导阵列电光扫描器%有限差分光束传输法%光学相控阵%波导耦合
導波光學%波導陣列電光掃描器%有限差分光束傳輸法%光學相控陣%波導耦閤
도파광학%파도진렬전광소묘기%유한차분광속전수법%광학상공진%파도우합
Guided wave optics%Waveguide array electro-optic scanner%Finite-difference beam-propagation method (FD-BPM)%Optical phased array%Mutual coupling among waveguides
利用有限差分光束传输法研究了波导耦合对波导阵列电光扫描器传输特性和扫描特性的影响.结果表明:耦合对其传输特性和扫描特性的影响明显;只有在一定条件下,对其影响才较小,可以忽略.由此可知,在设计光波导阵列结构时,考虑波导耦合效应是至关重要的.进一步,提出了描述光波导阵列电光扫描器的技术指标,并研究了该扫描器的结构优化设计问题.
利用有限差分光束傳輸法研究瞭波導耦閤對波導陣列電光掃描器傳輸特性和掃描特性的影響.結果錶明:耦閤對其傳輸特性和掃描特性的影響明顯;隻有在一定條件下,對其影響纔較小,可以忽略.由此可知,在設計光波導陣列結構時,攷慮波導耦閤效應是至關重要的.進一步,提齣瞭描述光波導陣列電光掃描器的技術指標,併研究瞭該掃描器的結構優化設計問題.
이용유한차분광속전수법연구료파도우합대파도진렬전광소묘기전수특성화소묘특성적영향.결과표명:우합대기전수특성화소묘특성적영향명현;지유재일정조건하,대기영향재교소,가이홀략.유차가지,재설계광파도진렬결구시,고필파도우합효응시지관중요적.진일보,제출료묘술광파도진렬전광소묘기적기술지표,병연구료해소묘기적결구우화설계문제.
Effect of the mutual coupling among waveguides on propagating and scanning characteristics of waveguide array electro-optic scanner (WAEOS) is studied by use of the finite-difference beam-propagation method (FD-BPM). The results indicate that the mutual coupling is usually of great influence on these characteristics but it is of little influence on them only under some certain conditions. Therefore, in order to design structure of WAEOS appropriately, it is necessary to consider the effect of the mutual coupling on propagating and scanning characteristics fully. Some parameters, which are used to describe performance of WAEOS, are put forward and then the optimal structure of WAEOS is discussed with considering the mutual coupling fully.
