Graphene-channel FETs for photonic frequency double-mixing conversion over the sub-THz band
| Autor: | Tetsuya Suemitsu, Jun-ichi Kani, Yuhei Yabe, Hiroki Ago, Adrian Dobroiu, Naoto Yoshimoto, Jun Terada, Taiichi Otsuji, Kenji Kawahara, Takanori Eto, Hiroki Sugiyama, Youichi Fukada, Kenta Sugawara, Victor Ryzhii, Katsumi Iwatsuki, Kazuki Kojima, Takayuki Watanabe, Y. Kurita, Tetsuya Kawasaki |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Optical fiber business.industry Graphene Terahertz radiation Condensed Matter Physics Signal Electronic Optical and Magnetic Materials law.invention Photomixing Intermediate frequency Modulation law Materials Chemistry Optoelectronics Electrical and Electronic Engineering Photonics business |
| Zdroj: | Solid-State Electronics. 103:216-221 |
| ISSN: | 0038-1101 |
| DOI: | 10.1016/j.sse.2014.07.009 |
| Popis: | We report on photonic frequency double-mixing conversion utilizing a graphene-channel FET (G-FET). Optoelectronic properties of graphene are exploited to perform single-chip photonic double-mixing functionality, which is greatly advantageous in future broadband technological conversion between optical fiber and sub-terahertz wireless communications. A 1 GHz modulation signal on a 125 GHz carrier is electrically input to the gate, whereas a 1.58 μm dual wavelength CW laser beam having a frequency difference of 112.5 GHz impinges on the G-FET. The G-FET works as a photomixer generating a 112.5 GHz local signal which is then electrically mixed to the 1 GHz modulated 125 GHz carrier signal, resulting in the down-conversion of the 1 GHz signal to a 12.5 GHz intermediate frequency (IF) signal. |
| Databáze: | OpenAIRE |
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