Variable Terahertz Attenuator Integrated on Nonradiative Guide Using Photoinduced Carriers

Keisuke Sasao, Yasuaki Monnai

研究成果: Article査読

1 被引用数 (Scopus)

抄録

A terahertz variable attenuator integrated on a nonradiative guide controlled by externally induced photoconductivity is proposed. Our device is constructed using high-resistivity silicon as a dielectric channel of the waveguide sandwiched between parallel conducting plates. By irradiating an excitation light to the side surface of the channel, photoinduced carriers are generated involving attenuation for terahertz waves propagating through the channel. We experimentally demonstrate attenuation of 0.50 dB/cm/mW at 300 GHz. The use of the nonradiative guide simplifies the light irradiation scheme and contributes to integrate other functions such as bending, filtering, splitting, and combining without radiation losses. We also discuss its unique frequency dependence, in which the attenuation increases as the frequency decreases.

本文言語English
論文番号9023006
ページ(範囲)256-259
ページ数4
ジャーナルIEEE Transactions on Terahertz Science and Technology
10
3
DOI
出版ステータスPublished - 2020 5 1

ASJC Scopus subject areas

  • 放射線
  • 電子工学および電気工学

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