Slow-Light Optimization of Polymer-Infiltrated Slot Photonic Crystal Waveguide
Slow-Light Optimization of Polymer-Infiltrated Slot Photonic Crystal Waveguide
复制标题
聚合物渗透缝隙光子晶体波导的慢光优化
DOI：
10.1109/tnano.2014.2315824
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发表时间：
2014-07
影响因子：
2.4
通讯作者：
Wang, Qi
中科院分区：
文献类型：
--
作者：
Zhao, Yong;Zhang, Ya-nan;Wang, Qi
在聚合物渗透缝隙光子晶体波导中实现了宽带宽、大群折射率、低色散的可调谐慢光。首先通过移动与狭缝相邻的第一和第二排空气孔来优化PI-SPCW的慢光特性。利用三维平面波展开方法，在9.0、3.5、1.1和0.8 nm的带宽上，得到了群折射率为55、100、172.5和222的低色散慢光。然后，研究了PI-SPCW中优化慢光的动态调制。由于渗透聚合物的电光效应，平带慢光的中心波长可以通过外部驱动电压灵活调节。对于群折射率为100的慢光，调制灵敏度可达-0.75nm/V，有效带宽可进一步扩大到11nm。这些成就为在PI-SPCW中实现广泛的目标光学功能提供了可能性，这些功能可以根据实际要求进行动态控制，并突出了PI-SPCW中电光效应所提供的多功能性，灵活性和可调谐性。
A tunable slow light with wide bandwidth, large group index, and low dispersion is realized in polymer-infiltrated slot photonic crystal waveguide (PI-SPCW). The slow-light properties of PI-SPCW are first optimized by shifting the first and second rows of air holes adjacent to the slot. Using the three-dimensional (3-D) plane wave expansion method, the low dispersion slow light with nearly constant group indices of 55, 100, 172.5, and 222 over bandwidths of 9.0, 3.5, 1.1, and 0.8 nm are demonstrated. Then, the dynamic modulation of the optimized slow light in PI-SPCW is investigated. Thanks to the electro-optic effect of the infiltrated polymer, the central wavelength of flatband slow light could be flexibly tuned by the external driving voltage. For the slow light with high group index of 100, the modulation sensitivity up to -0.75 nm/V is observed and the effective bandwidth could be further enlarged to 11 nm. These achievements open the possibility for achieving a wide range of targeted optical functionalities in PI-SPCW that can be dynamically controlled according to the practical requirements and highlight the versatility, flexibility, and tunability offered by electro-optic effect in PI-SPCW.
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影响因子：
3.8
作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
3.8
作者：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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