作者
Hongnan Xu, Yaocheng Shi
发表日期
2018/3
期刊
Laser & Photonics Reviews
卷号
12
期号
3
页码范围
1700240
简介
On‐chip multi‐mode communication has attracted much attention for its potential to greatly expand the bandwidth of data transmission. However, the application of multi‐mode transmission is still restricted since the multi‐mode waveguide can't be compactly routed, especially in the sharp bending region. The challenge lies in decreasing the significant inter‐mode coupling in the multi‐mode bending with a small radius. Few works have been reported to achieve multi‐mode bending, but all suffer from the complex fabrication. In this paper, an ultra‐sharp multi‐mode waveguide is proposed, which is assisted with metamaterial‐based mode converters. The sub‐wavelength structures are directly written onto the polymer cladding. By engineering the effective medium index of the metamaterial cladding in the mode converters, the inter‐mode coupling is dramatically inhibited. The fabricated sharp bending with a 30‐μm …
学术搜索中的文章
H Xu, Y Shi - Laser & Photonics Reviews, 2018