极化(电化学)
光学
算法
计算机科学
材料科学
分析化学(期刊)
物理
化学
色谱法
物理化学
作者
Jingjing Zhang,Xiaodong Shi,Zhaojian Zhang,Chao Ma,Xuefeng Chen,Liping Liu,Xiaoxian Song,Haiting Zhang,Yu Yu,Haiyan Ou,Kai Guo,Junbo Yang
出处
期刊:Optics Letters
[The Optical Society]
日期:2021-10-01
卷期号:46 (19): 5027-5027
被引量:6
摘要
Waveguide taper, a key component in the photonic integrated circuit (PIC), enables on-chip mode conversion, but large-footprint tapers are detrimental to the PIC, which desires compact and efficient devices. Polarization sensitivity also limits the tapers in the applications involving orthogonal modes. In this work, we design an efficient polarization-insensitive ultra-short MMI-based waveguide taper, through the mode spreading principle and the self-image principle. The proposed taper is 26.3 µm long, one order of magnitude shorter than the standard linear taper. We fabricate the taper, and experimentally demonstrate that it exhibits a high transmission efficiency of ∼ 70 % and a wide 1 dB bandwidth of > 54 n m , for both TE and TM polarizations.
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