Terahertz planar circuits based on photonic crystal

2016 Fiscal Year Final Research Report

• Project/Area Number: 26289104
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Electron device/Electronic equipment
• Research Institution: Osaka University
• Principal Investigator: Fujita Masayuki 大阪大学, 基礎工学研究科, 准教授 (40432364)
• Co-Investigator(Renkei-kenkyūsha): NAGATSUMA TADAO 大阪大学, 大学院基礎工学研究科, 教授 (00452417)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: テラヘルツ / フォトニック結晶 / 回路 / 集積

Outline of Final Research Achievements

We focused on a photonic crystal slab as technology platform for the integration of terahertz devices, such as planar circuits, with operating frequency located between the radio and light waves. We investigated the low loss of terahertz waveguides using a photonic crystal slab, and achieved a loss of 0.04 dB/cm in the 0.3 THz band. We also demonstrated a compact diplexer using a directional coupler based on photonic crystal waveguides. Then, we fabricated a prototype of a terahertz integrated circuit using the photonic crystal platform for frequency division wireless communication, which consists of the diplexer, a grating coupler as input-output wireless interface, and resonant tunneling diodes. Finally, we discussed the operating bandwidth of terahertz photonic crystal devices.

Free Research Field

光電子量子工学