Polarization beam splitting using a birefringent graded photonic crystal
Polarization beam splitting using a birefringent graded photonic crystal
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DOI：
10.1364/ol.38.000459
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发表时间：
2013-02-15
期刊：
影响因子：
3.6
通讯作者：
Cluzel, Benoit
中科院分区：
文献类型：
--
作者：
Cassan, Eric;Khanh Van Do;Cluzel, Benoit
提出使用双折射渐变光子晶体（GPhC）来实现高效的偏振分束器。这种方法可以将偏振和 TE/TM 光束分裂的有效光注入这两个功能解耦。由于 TE 和 TM 波在渐变介质内遵循不同的弯曲轨迹，自然实现了平滑的光偏振分裂。通过有限差分时域仿真预测了 160 nm 工作带宽，插入损耗约为 1 dB，极化间串扰低于 -15 dB。通过对使用绝缘体上硅光子技术制造的样品进行扫描近场光学测量，可以通过实验证明这种不寻常的电磁现象。这些实验工作为使用双折射 GPhC 来管理硅光子电路中的偏振多样性开辟了前景。 (c) 2013 年美国光学学会
The use of a birefringent graded photonic crystal (GPhC) is proposed for the realization of an efficient polarization beam splitter. This approach allows decoupling the two functions of efficient light injection for both polarizations and TE/TM beam splitting. A smooth light polarization splitting is naturally achieved due to the different curved trajectories followed within the graded medium by the TE and TM waves. A 160 nm operating bandwidth with insertion loss around 1 dB and interpolarization crosstalk below -15 dB is predicted by a finite difference time domain simulation. The unusually exploited electromagnetic phenomena are experimentally evidenced by scanning near-field optical measurements performed on samples fabricated using the silicon on insulator photonics technology. These experimental works open perspectives for the use of birefringent GPhCs to manage polarization diversity in silicon photonic circuits. (c) 2013 Optical Society of America