Pattern manipulation via on-chip phase modulation between orbital angular momentum beams

Li, H. et al. (2015) Pattern manipulation via on-chip phase modulation between orbital angular momentum beams. Applied Physics Letters, 107(5), 051102. (doi: 10.1063/1.4927758)

Abstract

An integrated approach to thermal modulation of relative phase between two optical vortices with opposite chirality has been demonstrated on a silicon-on-insulator substrate. The device consists of a silicon-integrated optical vortex emitter and a phase controlled 3 dB coupler. The relative phase between two optical vortices can be actively modulated on chip by applying a voltage on the integrated heater. The phase shift is shown to be linearly proportional to applied electrical power, and the rotation angle of the interference pattern is observed to be inversely proportional to topological charge. This scheme can be used in lab-on-chip, communications and sensing applications. It can be intentionally implemented with other modulation elements to achieve more complicated applications.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Sorel, Professor Marc and Meriggi, Miss Laura and Strain, Dr Michael and Li, Mr Huanlu
• Authors: Li, H., Strain, M. J., Meriggi, L., Chen, L., Zhu, J., Cicek, K., Wang, J., Cai, X., Sorel, M., Thompson, M. G., and Yu, S.
• College/School: College of Science and Engineering > School of Engineering; College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: Applied Physics Letters
• Publisher: American Institute of Physics
• ISSN: 0003-6951
• ISSN (Online): 1077-3118