Microwave photonics

Microwave photonics is the practical application of electromagnetic waves with a wavelength between one millimetre and one meter. Microwaves are important for communications, and systems for detecting microwaves are crucial for astronomy. The term also includes high-frequency electronic systems.

Latest Research and Reviews

  • Research
    | Open Access

    Most conventional PT-symmetric systems contain two physically separated modes. Here the authors proposed a PT-symmetric microwave optoelectronic oscillator, where the gain and loss modes are confined in a single spatial resonator, resulting in an increased structural simplicity, and long-term stability.

    • Jiejun Zhang
    • , Lingzhi Li
    • , Guangying Wang
    • , Xinhuan Feng
    • , Bai-Ou Guan
    •  & Jianping Yao
  • Research |

    Nanophotonic microwave synthesizers in the X-band (10 GHz, for radar) and K-band (20 GHz, for 5G), based on integrated soliton microcombs driven by a low-noise fibre laser, link the fields of microwave photonics and integrated microcombs.

    • Junqiu Liu
    • , Erwan Lucas
    • , Arslan S. Raja
    • , Jijun He
    • , Johann Riemensberger
    • , Rui Ning Wang
    • , Maxim Karpov
    • , Hairun Guo
    • , Romain Bouchand
    •  & Tobias J. Kippenberg
  • Research
    | Open Access

    Overcoming reciprocity is important for novel functionalities. Here, the authors demonstrate a spatio-temporally modulated metasurface capable of complete violation of Lorentz reciprocity by reflecting an incident beam into far-field radiation in forward scattering, but into near-field surface waves in reverse scattering.

    • Andrew E. Cardin
    • , Sinhara R. Silva
    • , Shai R. Vardeny
    • , Willie J. Padilla
    • , Avadh Saxena
    • , Antoinette J. Taylor
    • , Wilton J. M. Kort-Kamp
    • , Hou-Tong Chen
    • , Diego A. R. Dalvit
    •  & Abul K. Azad
  • Research |

    A digital platform that integrates a metasurface based on electronic varactors with an optical interrogation network based on photodiodes can be programmed by visible light to implement electromagnetic functions, including microwave cloaking, illusion and vortex beam generation.

    • Xin Ge Zhang
    • , Wei Xiang Jiang
    • , Hao Lin Jiang
    • , Qiang Wang
    • , Han Wei Tian
    • , Lin Bai
    • , Zhang Jie Luo
    • , Shang Sun
    • , Yu Luo
    • , Cheng-Wei Qiu
    •  & Tie Jun Cui
    Nature Electronics 3, 165-171

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