Dispersion engineering of photonic crystal waveguides with ring-shaped holes.

Dispersion engineering of photonic crystal waveguides with ring-shaped holes.
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DOI:
10.1364/oe.15.008323
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发表时间:
2007-06
期刊:
影响因子:
3.8
通讯作者:
A. Säynätjoki;M. Mulot;J. Ahopelto;H. Lipsanen
A. Säynätjoki;M. Mulot;J. Ahopelto;H. Lipsanen
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
A. Säynätjoki;M. Mulot;J. Ahopelto;H. Lipsanen

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优化了具有环形孔的光子晶体波导的几何形状,以使慢光区的色散最小化。我们发现几何形状与一个几乎恒定的组指数超过20在8 nm的波长范围内。低色散的起源与靠近下带隙边缘的传播模式的加宽有关。
The geometry of photonic crystal waveguides with ring-shaped holes is optimized to minimize dispersion in the slow light regime. We found geometries with a nearly constant group index in excess of 20 over a wavelength range of 8 nm. The origin of the low dispersion is related to the widening of the propagating mode close to the lower band gap edge.