Research of the control of vector beams for mode multiplexing optical communications

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K13370
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Optical engineering, Photon science
• Research Institution: Tohoku University
• Principal Investigator: Ohtera Yasuo 東北大学, 工学研究科, 准教授 (20292295)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: ベクトルビーム / 軌道角運動量 / 導波モード共鳴 / ディスク共振器

Outline of Final Research Achievements

This study relates to the mode multiplexing technology for optical communication systems. The main focus is to develop an optical circuit which can emit and receive optical beams having orbital angular momentum(OAM). By utilizing a disk optical resonator with azimuthal periodic structure, we tried to induce highly wavelength selective confinement of optical fields in the disk, as well as the vertical input/output of the OAM beams. During the research period we carried out 1) study of wave physics of the resonance, 2) fabrication experiment, and 3) study of high-performance parallel computing technique for the electromagnetic simulation of the complicated resonance phenomena. As to the last topic, we verified the feasibility of the FPGA-based parallel comuputing architecture for the highly efficient analysis of such sub-wavelength scale optical wave physics.

Free Research Field

計算電磁気学、光ナノ構造・現象