A photonic approach to generate arbitrary chirp microwave waveforms using a direct modulated laser source

Md Danish Nadeem; Chandan Kumar; Sanjeev Kumar Raghuwanshi; Rajnish Raj; Ritesh Kumar; Santosh Kumar

doi:10.1117/12.2687616

28 November 2023 A photonic approach to generate arbitrary chirp microwave waveforms using a direct modulated laser source

Md Danish Nadeem, Chandan Kumar, Sanjeev Kumar Raghuwanshi, Rajnish Raj, Ritesh Kumar, Santosh Kumar

Author Affiliations +

Proceedings Volume 12764, Optoelectronic Devices and Integration XII; 127640M (2023) https://doi.org/10.1117/12.2687616
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Abstract

In this work, a novel microwave photonic approach is applied to generate an arbitrary chirp microwave waveform in the Ku band that possesses a high chirp rate. Chirp microwave signals can be produced in a variety of ways, the most common of which is the shaping of the temporal pulse and the mapping of the wavelength to the time. The usage of Kuband frequencies is widespread in modern radar applications, such as high-resolution mapping and satellite altimetry. The range-Doppler resolution of a radar system can be enhanced by improving its chirp rate, time-bandwidth product, and center frequency. The proposed approach in this work is based on the direct modulated Laser source and polarization controller. The theoretical and simulation analysis has been done to generate a dual linear chirp microwave signal in the Ku band with a center frequency of 12 GHz.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Md Danish Nadeem, Chandan Kumar, Sanjeev Kumar Raghuwanshi, Rajnish Raj, Ritesh Kumar, and Santosh Kumar "A photonic approach to generate arbitrary chirp microwave waveforms using a direct modulated laser source", Proc. SPIE 12764, Optoelectronic Devices and Integration XII, 127640M (28 November 2023); https://doi.org/10.1117/12.2687616

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KEYWORDS

Microwave radiation

Modulation

Single mode fibers

Laser sources

Radar

Laser frequency

Polarization

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