CAJ | 학술논문

　　表面等离子体激元（surface plasmon polaritons, SPPs）能将光场束缚在亚波长量级，可以突破衍射极限，被认为是有希望实现纳米集成光学器件的载体之一。设计了一种T型腔结构的表面等离子体波导滤波器，并且利用时域有限差分（FDTD）法对其滤波特性进行了分析。结果表明，改变T型腔的长度和宽度可以改变透射谱的中心波长，而改变腔与耦合波导之间的间距，则可以调节腔的Q值。
　　표면등리자체격원（surface plasmon polaritons, SPPs）능장광장속박재아파장량급，가이돌파연사겁한，피인위시유희망실현납미집성광학기건적재체지일。설계료일충T형강결구적표면등리자체파도려파기，병차이용시역유한차분（FDTD）법대기려파특성진행료분석。결과표명，개변T형강적장도화관도가이개변투사보적중심파장，이개변강여우합파도지간적간거，칙가이조절강적Q치。
Optical fields can be bound at sub-wavelength level by surface plasma polaritons (SPPs) and dif?fraction limit can be broken through. SPP is regarded as one of the most hopeful carrier to implement integrated optical devices in nanometer level. A surface plasma waveguide filter with T-shape cavity structure is designed. And its filtering characteristics are analyzed by finite difference time domain (FDTD) method. The results show that the center wavelength of transmission spectrum can be changed by the changing of length and width of T-shape cavity. Q values of cavities can be adjusted by changing the distances between cavities and coupling waveguide.