Short Photonic-Crystal Directional Coupling Optical Switch of Extended Optical Bandwidth Using Flat Dispersion
Short Photonic-Crystal Directional Coupling Optical Switch of Extended Optical Bandwidth Using Flat Dispersion
复制标题
利用平坦色散扩展光带宽的短光子晶体定向耦合光开关
DOI：
10.1143/jjap.50.032201
复制
发表时间：
2011
影响因子：
1.5
通讯作者：
Masahide
中科院分区：
文献类型：
--
作者：
Sugisaka;Jun-ichiro; Yamamoto;Noritsugu; Okano;Makoto; Komori;Kazuhiro; Itoh;Masahide
定向耦合光开关由具有较宽光学带宽的光子晶体构成。它具有平坦的分散性，这使得它的长度可以大大缩短。比较了平坦色散定向耦合器和普通定向耦合器的开关特性，证明在保持输入能量和带宽的前提下，器件长度可以缩短到4.68µm(比常规定向耦合器短50倍)。制作了一个1.17微米的光开关，同时缩短了器件，扩展了光带宽。
A directional coupling optical switch is constructed from a photonic crystal having a wide optical bandwidth. It has flat dispersion, which allows considerable shortening of its length. The switching operation of a directional coupler having flat dispersion and of an ordinary directional coupler are compared, to prove that the device length can be as short as 4.68 µm (50 times shorter than the conventional one), while maintaining the input energy and bandwidth. A 1.17 µm optical switch is fabricated, simultaneously shortening the device and extending the optical bandwidth.