Optical beamforming networks for millimeter-wave wireless communications

F Duan, Y Guo, Z Gu, Y Yin, Y Wu, T Chen - Applied Sciences, 2023 - mdpi.com
With the rapid data growth driven by smart phone, high-definition television and virtual
reality/augmented reality devices and so on, the launched 5G and upcoming 6G wireless …

Femtojoule per MAC neuromorphic photonics: an energy and technology roadmap

AR Totović, G Dabos, N Passalis… - IEEE Journal of …, 2020 - ieeexplore.ieee.org
Photonic artificial neural networks have garnered enormous attention due to their potential
to perform multiply-accumulate (MAC) operations at much higher clock rates and consuming …

Compact and scalable polarimetric self-coherent receiver using a dielectric metasurface

G Soma, Y Nomoto, T Umezawa, Y Yoshida, Y Nakano… - Optica, 2023 - opg.optica.org
Polarimetric self-coherent systems using direct-detection-based Stokes-vector receivers
(SVRs) are a promising technology to meet both the cost and capacity requirements of short …

Live streaming of uncompressed HD and 4K videos using terahertz wireless links

K Nallappan, H Guerboukha, C Nerguizian… - IEEE …, 2018 - ieeexplore.ieee.org
Taming the Terahertz waves (100 GHz-10 THz) is considered the next frontier in wireless
communications. While components for the ultra-high bandwidth Terahertz wireless …

100-GHz radio and power over fiber transmission through multicore fiber using optical-to-radio converter

T Umezawa, PT Dat, K Kashima, A Kanno… - Journal of Lightwave …, 2018 - opg.optica.org
We designed and fabricated a 100-GHz range integrated photoreceiver with zero-bias
operational uni-traveling-carrier photodiode and pseudomorphic high electron mobility …

Reconfigurable low phase noise RF carrier generation up to W-band in silicon photonics technology

A Malacarne, A Bigongiari, A D'Errico… - Journal of Lightwave …, 2022 - ieeexplore.ieee.org
Reconfigurable radiofrequency (RF) signal generation in the 30–300 GHz range is attractive
for many applications. W-band (75–110 GHz) is currently targeted by both wireless and …

100-GHz fiber-fed optical-to-radio converter for radio-and power-over-fiber transmission

T Umezawa, K Kashima, A Kanno… - IEEE Journal of …, 2016 - ieeexplore.ieee.org
We have developed a 100-GHz fiber-fed optical-to-radio converter for radio-and power-over-
fiber transmission. A zero-bias operational high-speed photodetector (3-dB bandwidth> 100 …

High-speed evanescently-coupled waveguide type-II MUTC photodiodes for zero-bias operation

F Yu, K Sun, Q Yu, A Beling - Journal of Lightwave Technology, 2020 - ieeexplore.ieee.org
We demonstrate evanescently-coupled GaAs 0.5 Sb 0.5/In 0.53 AlyGa 0.47-y As modified
uni-traveling carrier (MUTC) waveguide photodiodes (PDs) with high bandwidth (BW) of 66 …

Flexible millimeter-wave carrier generation up to the Sub-THz with silicon photonics filters

C Porzi, F Falconi, M Sorel, P Ghelfi… - Journal of Lightwave …, 2021 - opg.optica.org
We report on the characterization of a photonic integrated circuit (PIC) for the generation of a
RF carrier in the millimeter-wave band up to the sub-THz region. The circuit is implemented …

Optimized uni-traveling carrier photodiode and mushroom-mesa structure for high-power and sub-terahertz bandwidth under zero-and low-bias operation

T Liu, Y Huang, Q Wei, K Liu, X Duan… - Journal of Physics …, 2019 - iopscience.iop.org
In this paper, physically-based simulations are carried out to investigate and design uni-
traveling carrier photodiode (UTC-PD) for high-power sub-terahertz wave generation at zero …