【摘要】 利用传输矩阵法探讨一维光子晶体中两种不同的偏振模式的特性 .通过改变周期性分层介质的填充率、厚度、入射光频率、入射角度等参数 ,得到一维光子晶体在光频 (特别是近红外 )范围内的透射谱与以上因素的关系 ,从而设计了一维光子晶体偏振器 .理论计算得到它对p偏振的透过为 - 3.0× 10 -4dB ,而对s偏振透过仅为 -4 0dB ,偏振度为 96 .7% .结果表明可以用光子晶体实现小尺寸、高偏振度的偏振器件 .更多还原

【Abstract】 A theoretical investigation is undertaken to study polarization properties in one-dimensional photonic bandgap materials by transfer matrix method. By altering the refractive indices and thickness of the periodic dielectric layers, wavelength and angles of the incident light, gained the relationship of the transmission spectrum with the factors hereinbefore within optical range (especially in near infrared range), accordingly a polarizer is designed base on one-dimensional photonic crystals. Calculated transmission of p polarization through the designed polarizer is -3.0×10 -4 dB, but for s polarization transmission is only -40 dB, degree of polarization is 96.7%. Results indicate it can realize polarizer with small size and high degree of polarization by using photonic crystals.更多还原