期刊
OPTICS EXPRESS
卷 27, 期 11, 页码 15856-15867出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.27.015856
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资金
- Sandia National Laboratories [1672814]
- NASA Early Career Faculty award (ECF) [80NSSC17K052]
We present the design. modeling, fabrication. and characterization of grating coupler devices for z-cut lithium niobate near 1550 nm. We first experimentally measure the sensitivity of the insertion loss of a conventional grating coupler to translational misalignment through a three-factor full factorial design of experiment. Next, we design grating couplers that are significantly less sensitive to misalignment. The fabricated devices experienced less than 7 dB of excess insertion loss for combined misalignments of up to +/- 5 mu m in plane and up to -2 mu m or + 10 mu m out of plane. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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