400-GHz wireless transmission of 60-Gb/s nyquist-QPSK signals using UTC-PD and heterodyne mixer

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We experimentally demonstrate an optical network compatible high-speed optoelectronics THz wireless transmission system operating at 400-GHz band. In the experiment, optical Nyquist quadrature phase-shift keying signals in a 12.5-GHz ultradense wavelength-division multiplexing grid is converted to the THz wireless radiation by photomixing in an antenna integrated unitravelling photodiode. The photomixing is transparent to optical modulation formats. We also demonstrate in the experiment the scalability of our system by applying single to four channels, as well as mixed three channels. Wireless transmission of a capacity of 60 Gb/s for four channels (15 Gb/s per channel) at 400-GHz band is successfully achieved, which pushes the data rates enabled by optoelectronics approach beyond the envelope in the frequency range above 300 GHz. Besides those, this study also validates the potential of bridging next generation 100 Gigabit Ethernet wired data stream for very high data rate indoor applications.
Original languageEnglish
Article number7556985
JournalIEEE Transactions on Terahertz Science and Technology
Issue number6
Pages (from-to)765 - 770
Publication statusPublished - 2016

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  • Radiation
  • Electrical and Electronic Engineering
  • Photomixing
  • THz photonics
  • THz wireless communication
  • ultradense wavelength-division multiplexing (UD-WDM)
  • unitravelling carrier photodiode (UTC-PD)
  • Broadband networks
  • Light modulation
  • Optical systems
  • Phase shift
  • Phase shift keying
  • Terahertz waves
  • Wavelength division multiplexing
  • 100 Gigabit Ethernet
  • Heterodyne mixers
  • High-speed optoelectronics
  • Indoor applications
  • Optical modulation format
  • Ultradense wavelength division multiplexing
  • Wireless transmission systems
  • Wireless transmissions
  • Quadrature phase shift keying


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