Comparison of cross-talk effects between colloidal quantum dot and conventional waveguides
Comparison of cross-talk effects between colloidal quantum dot and conventional waveguides
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DOI：
10.1364/ol.32.000235
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发表时间：
2007-02-01
期刊：
影响因子：
3.6
通讯作者：
Lin, Lih Y.
中科院分区：
文献类型：
--
作者：
Huang, Ludan;Wang, Chia-Jean;Lin, Lih Y.
我们给出了由直径10 nm的胶体量子点(QD)阵列组成的亚衍射纳米光子波导的串扰计算，并与传统的连续介质波导进行了比较，假设尺寸相同，导模截止直径为200 nm。我们发现，在相同的间隔>；30 nm下，QD级联比10 nm介质光波导具有更低的串扰。此外，对于间距为280 nm的200 nm介质光波导，其结果与间距为110 nm的量子点结构的结果相当。因此，在亚衍射区实现低串扰方面，所提出的QD器件潜在地优于传统的光波导，并且为实现高密度光子集成电路提供了一条新的途径。(C)2007年美国光学学会。
We present cross-talk calculations for a subdiffraction nanophotonic waveguide that consists of a colloidal quantum dot (QD) array 10 nm in diameter and compare the results with conventional continuous dielectric waveguides, assuming the same 10 nm size as well as a 200 nm cutoff diameter for guided mode. We find that the QD cascade has much lower cross talk than 10 nm dielectric waveguides at an identical separation > 30 nm. Moreover, results for 200 nm dielectric waveguides at a 280 run gap are comparable with those of QD structures spaced 110 nm apart. Hence the proposed QD device is potentially superior to conventional waveguides in achieving lower cross talk in the subdiffraction regime and provides a new route to achieving high-density photonic integrated circuits. (c) 2007 Optical Society of America.