Low Cost mmWaves Electromagnetic Spectrum Monitoring System for Education and Research Purpose

Leon, Ruben; Rosero, Cyntia; Tinoco-S., Alexis F.; Guarderas, Galo; Lara, Fernando

doi:10.1109/rtsi55261.2022.9905192

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An Experimental Alternative Of Microwave Signal1

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2024

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“…Hence the generation of microwave (MW) signals is of vital importance. In this regard, it is well known that microwave signal generation can be realized using oscillators based on electronic devices such as Gunn diodes or transistors [4], [5]. However, sometimes these methods fail to produce satisfactory results.…”

Section: An Experimental Alternative Of Microwave Signalmentioning

confidence: 99%

An experimental alternative of microwave signal generation through an optical heterodyning technique using a multimode laser diode and a tunable DFB laser

Zaldívar-Huerta,

Tshibangu Mbuebue,

García-Juárez

et al. 2024

IEEE Latin Am. Trans.

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Experimentally, an alternative technique to one of the classical optical heterodyning methods for generating microwave (MW) signals is demonstrated. The novelty of this approach lies in the utilization of a Multimode Laser Diode (MLD) in conjunction with a Fiber Bragg Grating (FBG) and a tunable Distributed Feedback (DFB) laser, rather than employing two DFB lasers. The FBG acts as an optical filter, enabling the selection of only one mode of the MLD. This selected mode serves as a reference in the optical beating process alongside the signal from the tunable DFB laser. Tuning is achieved by varying the wavelength of the DFB laser to modify the wavelength separation (Δλ) between the two optical modes. Experimental results are corroborated theoretically and through simulation. Performance evaluation of the system is conducted by measuring the signal-tonoise ratio (SNR) and the Phase Noise (PN) parameters.

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Section: An Experimental Alternative Of Microwave Signalmentioning

confidence: 99%