Photonics Research, 2019, 7 (8): 08000828, Published Online: Jul. 11, 2019   

Ge-on-Si modulators operating at mid-infrared wavelengths up to 8  μm

Author Affiliations
1 Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, UK
2 State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
3 Silicon Technologies Centre of Excellence, Nanyang Technological University, Singapore 639798, Singapore
4 Centre de Nanosciences et de Nanotechnologies, CNRS, Univ. Paris-Sud, Université Paris-Saclay, C2N—Palaiseau, 91120 Palaiseau, France
Abstract
We report mid-infrared Ge-on-Si waveguide-based PIN diode modulators operating at wavelengths of 3.8 and 8 μm. Fabricated 1-mm-long electro-absorption devices exhibit a modulation depth of >35 dB with a 7 V forward bias at 3.8 μm, and a similar 1-mm-long Mach–Zehnder modulator has a Vπ·L of 0.47 V·cm. Driven by a 2.5Vpp RF signal, 60 MHz on-off keying modulation was demonstrated. Electro-absorption modulation at 8 μm was demonstrated preliminarily, with the device performance limited by large contact separation and high contact resistance.

Tiantian Li, Milos Nedeljkovic, Nannicha Hattasan, Wei Cao, Zhibo Qu, Callum G. Littlejohns, Jordi Soler Penades, Lorenzo Mastronardi, Vinita Mittal, Daniel Benedikovic, David J. Thomson, Frederic Y. Gardes, Hequan Wu, Zhiping Zhou, Goran Z. Mashanovich. Ge-on-Si modulators operating at mid-infrared wavelengths up to 8  μm[J]. Photonics Research, 2019, 7(8): 08000828.

本文已被 2 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!