A Simple Photonic Generation of a Microwave Waveforms Scheme Based on a Dual-Polarization Dual-Drive Mach-Zehnder Modulator

Gu, Yiying; Gao, Ruirui; Chong, Yuhua; Li, Xiaozhou; Zhao, Mingshan; Hu, Jingjing; Han, Xiuyou

doi:10.3390/app12052668

Cited by 2 publications

(1 citation statement)

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“…The DSB optical mm-wave system has two primary obstacles: the occurrence of fading and the temporal displacement of codes, which is mainly caused by chromatic dispersion of the fiber [10]. It has been shown that OCS and SSB optical mm-waves are resistant to fading, but their propagation distance is restricted by the length of time shift of the codes [11,12]. Some researchers [13] proposed a technique that efficiently prohibits the manipulation of codes that generate optical mm-wave signals with a quadrupling frequency.…”

Section: Introductionmentioning

confidence: 99%

Advancing microwave signal generation: frequency quadrupling using dual-drive Mach-Zehnder modulator

Kumar,

Nadeem,

Raj

et al. 2024

Integrated Optics: Devices, Materials, and Technologies XXVIII

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This work demonstrates the implementation of a microwave photonic technique for generating a frequency-quadrupled microwave signal. The approach involves utilizing a parallel Dual-Drive Mach-Zehnder Modulator (DDMZM) driven by an electrical signal, while applying appropriate dc biasing to the DDMZM electrodes to suppress or eliminate the odd harmonic components of the sidebands in the optical domain. The DDMZM is operated at its maximum transmission point (MATP). To eliminate the optical carrier, an optical notch filter with the same central wavelength as the carrier is employed at the output of the DDMZM. This setup yields two optical sidebands. By detecting the beat signal at a photodetector (PD), a fourfold increase in frequency relative to the input RF signal is achieved. The input microwave signal frequencies of 15 GHz are utilized, resulting in output microwave signal frequencies of 60 GHz, 120 GHz, respectively. The generated frequency-quadrupled microwave signal can find applications in areas such as high-speed communication systems, radar systems, wireless networks, and satellite communications, where higher frequency signals are desired.

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