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Minimalist terahertz wireless transceiver in integrated photonics.

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Area of Science:

  • Integrated photonics
  • Wireless communication
  • Terahertz technology

Background:

  • Photonics-assisted wireless communication offers high bandwidth but faces challenges in power-sensitive end devices due to complex transceiver architectures.
  • Mitigating carrier drift and jitter typically requires high-purity sources or extensive digital signal processing (DSP).

Purpose of the Study:

  • To propose a minimalist integrated photonics-assisted terahertz wireless transceiver for lightweight systems.
  • To overcome the hardware complexity and DSP overhead hindering the adoption of such technologies in end devices.

Main Methods:

  • Utilized residual carrier modulation and injection locking for a streamlined transceiver architecture.
  • Employed off-the-shelf 4 MHz linewidth distributed feedback laser chips and a single photodetector receiver.
  • Integrated on-chip modulator and photodiode for enhanced system integration.

Main Results:

  • Achieved 144 Gbps high-speed data transmission at sub-terahertz frequencies.
  • Operated the transceiver in a digital signal processing (DSP)-free regime for carrier recovery.
  • Demonstrated a streamlined architecture eliminating the need for complex carrier recovery mechanisms.

Conclusions:

  • The proposed minimalist transceiver design significantly reduces hardware complexity and DSP requirements.
  • This scheme enables higher-level system integration and paves the way for lightweight, high-performance photonics-assisted wireless transceivers in end devices.
  • Facilitates massive adoption of advanced wireless communication technologies for ubiquitous access.