Reconfigurable Generation of Switchable Multi-Format Linearly Frequency Modulated Signal at X-Band and K-Band With a Compact Photonics-Based Scheme

IF 2.1 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Photonics Journal Pub Date : 2024-07-30 DOI:10.1109/JPHOT.2024.3435772

Yunxin Wang;Xiao Liu;Jing Zhang;Dayong Wang;Yu Zhang

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Abstract

A photonic method for the reconfigurable generation of switchable multi-format linearly frequency modulated (LFM) signal using a dual-polarization dual-parallel Mach-Zehnder modulator (DP-DPMZM) is proposed and experimentally verified. By properly controlling the bias voltage applied on the DP-DPMZM, different chirp waveforms, including dual-chirped, down-chirped and up-chirped LFM signals, can be obtained when a radio frequency (RF) signal and a baseband chirped signal are injected into the modulator. Besides, the central frequency of the generated LFM signal can be converted from X-band to K-band by adopting -2 ^nd -order sideband instead of -1 ^st -order sideband of the modulated RF signal. Moreover, the RF signal is always single sideband modulated, thus eliminating the dispersion-induced power fading, which is essential for the photonics-based distributed multi-function radar. In the proposed scheme, no optical filter is required, which also improves the stability and feasibility of the system.

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利用基于紧凑型光子学的方案，在 X 波段和 K 波段可重构地生成可切换的多格式线性频率调制信号

本文提出并通过实验验证了一种利用双偏振双并联马赫-泽恩德调制器（DP-DPMZM）可重新配置生成可切换多格式线性频率调制（LFM）信号的光子方法。通过适当控制施加在 DP-DPMZM 上的偏置电压，当射频（RF）信号和基带啁啾信号注入调制器时，可获得不同的啁啾波形，包括双啁啾、下啁啾和上啁啾 LFM 信号。此外，生成的低频调制信号的中心频率可从 X 波段转换为 K 波段，方法是采用-2 阶边带代替调制射频信号的-1 阶边带。此外，射频信号始终为单边带调制，从而消除了色散引起的功率衰减，这对于基于光子技术的分布式多功能雷达来说至关重要。在所提出的方案中，不需要光滤波器，这也提高了系统的稳定性和可行性。

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来源期刊

IEEE Photonics Journal ENGINEERING, ELECTRICAL & ELECTRONIC-OPTICS

CiteScore

4.50

自引率

8.30%

发文量

489

审稿时长

1.4 months

期刊介绍： Breakthroughs in the generation of light and in its control and utilization have given rise to the field of Photonics, a rapidly expanding area of science and technology with major technological and economic impact. Photonics integrates quantum electronics and optics to accelerate progress in the generation of novel photon sources and in their utilization in emerging applications at the micro and nano scales spanning from the far-infrared/THz to the x-ray region of the electromagnetic spectrum. IEEE Photonics Journal is an online-only journal dedicated to the rapid disclosure of top-quality peer-reviewed research at the forefront of all areas of photonics. Contributions addressing issues ranging from fundamental understanding to emerging technologies and applications are within the scope of the Journal. The Journal includes topics in: Photon sources from far infrared to X-rays, Photonics materials and engineered photonic structures, Integrated optics and optoelectronic, Ultrafast, attosecond, high field and short wavelength photonics, Biophotonics, including DNA photonics, Nanophotonics, Magnetophotonics, Fundamentals of light propagation and interaction; nonlinear effects, Optical data storage, Fiber optics and optical communications devices, systems, and technologies, Micro Opto Electro Mechanical Systems (MOEMS), Microwave photonics, Optical Sensors.