CAJ | 학술논문

研究绝热式方向性偶合器修正型汉明权重函数之适当波导长度与结构影响.传统的光方向耦合器之理论是由绝热条件下所获得之结果,因此在波导耦合长度不夠长时则变得可疑,有鑑于此需要依靠光束模拟软件.文中主要的指标为修正型汉明权重函数之低串扰、宽频宽和较短的耦合器长度.最后由结果得知我们所提出使用的修正型汉明权重函数在此架构下能获得较佳的设计结果.
연구절열식방향성우합기수정형한명권중함수지괄당파도장도여결구영향.전통적광방향우합기지이론시유절열조건하소획득지결과,인차재파도우합장도불구장시칙변득가의,유감우차수요의고광속모의연건.문중주요적지표위수정형한명권중함수지저천우、관빈관화교단적우합기장도.최후유결과득지아문소제출사용적수정형한명권중함수재차가구하능획득교가적설계결과.
Waveguide structure effect for the suitable length of adiabatic directional full couplers by modi-fied-hamming weighting function is described. The validity of approximation theory of adiabatic directional full couplers becomes questionable when the coupling length is not enough long so the beam propagation method is used. We propose a new design and numerically show that some optical properties of the opti-mized one are better than the optimized coupler with hamming function weighting. The objective of the work includes in the new design of adiabatic directional full couplers can obtain low noise, short couplers respectively. It is surely that the proposed modification-hamming function weighting is more effective than convention weighting for adiabatic directional full couplers.