Multi-Chirp Piecewise Linearly Frequency Modulated Microwave Generation Using a Semiconductor Laser

B Nakarmi, BY Song, HN Parajuli… - IEEE Photonics …, 2023 - ieeexplore.ieee.org
A simple structured photonics-based multi-chirp piecewise linearly frequency modulated
microwave (Ph-MPLFM) waveform is proposed and demonstrated experimentally for radar …

Multi-Chirp LFM Waveforms Generation With Reconfigurable Chirp Rates Using Optical Injection in a Semiconductor Laser

B Nakarmi, BY Song, IA Ukaegbu… - Journal of Lightwave …, 2024 - opg.optica.org
We propose and experimentally demonstrate a photonics-based technique for generating
simultaneous up-down multiple chirp-rate linear frequency modulated (SUDMC-LFM) …

Ultra-wideband photonic frequency-hopping waveform generator enabled by optical injection locking for secure terahertz wireless communications

Z Yang, F Yang, Z Wen, H Wang, Y Liu… - Journal of Lightwave …, 2024 - ieeexplore.ieee.org
Terahertz (THz) wave technology has garnered significance in various cutting-edge
applications in recent years, including 6G communications, high-resolution imaging, and …

Multi-radar Interference Mitigation in Photonics-based Radar with Sliding Window LSTM Recurrent Neural Network

HN Parajuli, A Ashimbayeva, U Nakarmi… - Journal of Lightwave …, 2024 - ieeexplore.ieee.org
In this paper, we propose and experimentally demonstrate a technique of mitigating multi-
radar interference in a photonic radar using a sliding window long short-term memory (SW …

Ultra-wideband and Multi-octave Tunable Millimeter Wave Generation based on Photonic Multiplication and Delay-matched Heterodyne

Y Liu, F Yang, Z Yang, Z Wen, H Jiang… - Journal of Lightwave …, 2024 - ieeexplore.ieee.org
Millimeter wave (MMW) and terahertz technology has garnered great interest in various
fields due to its wide bandwidth availability. However, generating MMW signals that …

Interference-Resistant Photonically Generated Orthogonal Pair Multi-Chirp-LFM Waveform

HN Parajuli, B Nakarmi, A Ashimbayeva… - … Topical Meeting on …, 2023 - ieeexplore.ieee.org
We propose and demonstrate a photonically generated orthogonal up-down-chirp pair
based multi-chirp linear frequency modulation (Ph-O-MLFM) radar waveform that offers …

Stepped Frequency Radar with Broadband Signal Generation by Period One Laser Dynamics

B Wu, F Zhang, X Yu, X Wang… - … Meetings (ACP/POEM), 2023 - ieeexplore.ieee.org
We propose a stepped frequency (SF) radar that utilizes period one (P1) dynamics of an
optically injected semiconductor laser to generate broadband SF signals. An SF signal with …

High-frequency broadband radar signal generation based on optical frequency comb

M Xi, W Zhao, X Song, D Bo… - AOPC 2023: AI in Optics …, 2023 - spiedigitallibrary.org
The rapid development of radar technology requires RF transmitters with high working
frequency, broad tuning bandwidth, flexible reconfigurability, and the ability of generating …

Analysis of disturbances in the multi-radar environment and mitigation approaches

Y Bai, B Nakarmi, IA Ukaegbu… - … Lasers and Applications …, 2022 - spiedigitallibrary.org
Among several sensors, photonic RADAR has shown potential performance in range
detection, radial velocity,“allweather” system, and distance resolution. With an increase in …