Photon pair generation in hydrogenated amorphous silicon microring resonators.

Photon pair generation in hydrogenated amorphous silicon microring resonators.
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DOI:
10.1038/srep38908
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发表时间:
2016-12-20
期刊:
影响因子:
4.6
通讯作者:
Thompson MG
Thompson MG
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Hemsley E;Bonneau D;Pelc J;Beausoleil R;O'Brien JL;Thompson MG

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We generate photon pairs in a-Si:H microrings using a CW pump, and find the Kerr coefficient of a-Si:H to be 3.73 ± 0.25 × 10−17m2/W. By measuring the Q factor with coupled power we find that the loss in the a-Si:H micro-rings scales linearly with power, and therefore cannot originate from two photon absorption. Theoretically comparing a-Si:H and c-Si micro-ring pair sources, we show that the high Kerr coefficient of this sample of a-Si:H is best utilized for microrings with Q factors below 103, but that for higher Q factor devices the photon pair rate is greatly suppressed due to the first order loss.
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