科研之友
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摘要
We present our recent work on fibre-chip grating couplers operating around 1310 nm. For the first time, we demonstrate the combination of dual-etch and apodization design approaches which may achieve a coupling efficiency of 85% (-0.7 dB). Subwavelength structures were employed to modify the coupling strength of the grating. -1.9 dB efficiency was measured from a first set of fabricated structures. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.
- 出版日期2017-7-24
