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Broadband Arbitrary Ratio Power Splitters Based on Directional Couplers With Subwavelength Structure
IEEE Photonics Technology Letters ( IF 2.6 ) Pub Date : 2021-04-01 , DOI: 10.1109/lpt.2021.3070464
Shi Zhao 1 , Weixi Liu 1 , Jingye Chen 1 , Zuoqin Ding 1 , Yaocheng Shi 1
Affiliation  

We propose and demonstrate a $1\times2$ power splitter enabling arbitrary power splitting ratios. The device is based on a directional coupler with subwavelength structure in the coupling region and a trapezoid-structure in one arm. The measurement shows that arbitrary power splitting ratios, equal to 50:50, 60:40, 70:30, 80:20 and 90:10, can be obtained over an >80 nm bandwidth with an excess loss about 0.65 dB at 1550 nm, while the footprint is only $11.5\,\,\mu \text{m}\,\,\times 1.315\,\,\mu \text{m}$ . The proposed arbitrary ratio power splitter shows promising application prospect in photonic integrated circuits.

中文翻译:

基于亚波长结构定向耦合器的宽带任意比功率分配器

我们建议并演示一个 $ 1 \ times2 $ 功率分配器,可实现任意功率分配比。该设备基于定向耦合器,耦合器在耦合区域具有亚波长结构,在一个臂中具有梯形结构。测量表明,可以在大于80 nm的带宽上获得等于50:50、60:40、70:30、80:20和90:10的任意功率分配比,在1550 nm处会有大约0.65 dB的额外损耗,而足迹只是 $ 11.5 \,\,\ mu \ text {m} \,\,\ times 1.315 \,\,\ mu \ text {m} $ 。提出的任意比例功率分配器在光子集成电路中显示出广阔的应用前景。
更新日期:2021-04-09
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