Transmitting light efficiently on photonic crystal surface waveguide bend
Transmitting light efficiently on photonic crystal surface waveguide bend
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DOI：
10.1063/1.2793175
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发表时间：
2007-10
影响因子：
4
通讯作者：
E. H. Khoo;T. Cheng;A. Liu;J. Li;D. Pinjala
中科院分区：
文献类型：
--
作者：
E. H. Khoo;T. Cheng;A. Liu;J. Li;D. Pinjala
本文研究了光子晶体表面波导弯曲处的传输效率。光通过表面模式被限制在光子晶体-空气界面。表面波导弯曲处的传输效率很差。这是由于在表面波导弯曲的不同部分之间的波矢量的相位不匹配。为了减少不同波导段之间的相位失配，对弯曲段的电池特性进行了修改。结果表明，在改进的表面波导弯曲结构周围，传输效率高达93%以上。
In this letter, the transmission efficiency around waveguide bend on the surface of photonic crystal is investigated. Light is confined to the photonic crystal-air interface by means of surface modes. The transmission efficiency around surface waveguide bend is shown to be very poor. This is due to the phase mismatch of the wave vectors between different sections of the surface waveguide bend. To reduce the phase mismatch between the different waveguide sections, the cell properties at the bend section are modified. As a result, high transmission efficiency of more than 93% around the modified surface waveguide bend structure is achieved.