Development of an efficient design method for a wavegduie polarization converter and an extremely thin plate for polarization conversion

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420322
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Electron device/Electronic equipment
• Research Institution: Hosei University
• Principal Investigator: Yamauchi Junji 法政大学, 理工学部, 教授 (50174579)
• Research Collaborator: TANIGUCHI Ryousuke 法政大学, 大学院理工学研究科 ; TAKAGI Yuhei 法政大学, 大学院理工学研究科 ; FUJIMURA Shunya 法政大学, 大学院理工学研究科 ; TAKADA Takumi 法政大学, 大学院理工学研究科 ; ATARASHI Daiki 法政大学, 大学院理工学研究科 ; HONDA Satoru 法政大学, 大学院理工学研究科 ; RIKIHISA Yuta 法政大学, 大学院理工学研究科 ; SAKAEYAMA Ryusei 法政大学, 大学院理工学研究科 ; SHIMAMURA Daiki 法政大学, 大学院理工学研究科
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 光デバイス / 偏波変換 / 表面プラズモン / 周期構造

Outline of Final Research Achievements

A waveguide type polarization converter is developed, in which a thin metal film is loaded on a substrate or at the interface between the cladding and the air region. No modification to the waveguide core is required, since two asymmetric modes are generated by virtue of the existence of the metal film. The polarization conversion can be obtained for a gold, silver or copper film, provided the configuration parameters are redesigned. Furthermore, the Yee-mesh-based beam-propagation method for a periodic structure is applied to the imaginary-distance procedure with an enhanced amplification factor. The eigenmode analysis of a rectangular hole array is performed with reduced computational time, and the obtained results are utilized to design a polarization converter. A novel configuration composed of two half-wave plates, which are stacked with a inclination angle of 45 degrees has been proposed to obtain the conversion regardless of the polarization plane angle of incident wave.

Free Research Field

電磁波工学