Generation of arbitrary shape microwave waveform centered on two fold cascaded Mach–Zehnder modulators

Raghuwanshi, Sanjeev Kumar; Nadeem, Md Danish; Kumar, Ritesh

doi:10.1007/s11082-023-05626-7

Cited by 3 publications

(2 citation statements)

References 23 publications

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“…A simulation was performed using the Opti-system software to analyze a dual-drive modulator operating at a rate of data transmission of 40 Gb/s and requiring a voltage of less than 2 V. To simplify the analysis, it is assumed that the system is operating in a steady-state condition. In this scenario, if a DD-MZM is employed, and the two channels of the MZM have independent drive voltages denoted as V1 and V2, respectively, and an input electric field denoted as Ein, then the resulting output electric field may be determined as [14][15][16][17][18].…”

Section: Theorymentioning

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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Section: Theorymentioning

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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“…There are several approaches for producing the chirp signal utilizing a photonic technique [7][8][9][10][11][12][13][14]. These methods are based on solid state transmitters, wavelength to time mapping, spectral shaping, temporal pulse shaping, and direct space to time mapping.…”

Section: Introductionmentioning

confidence: 99%

Advancing microwave waveform generation: photonic dual linear chirp modulation with configurable bandwidth

Kumar,

Nadeem,

Raghuwanshi

et al. 2024

Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVII

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Microwave waves play a crucial role in various fields, including data transmission, sensing applications, and seismology. The advancement of technology has led to the increased use of microwave waves due to their wider bandwidth and higher frequency capabilities. However, conventional electrical systems often produce microwave waveforms with limited bandwidth and predefined frequency ranges, which may not be suitable for all applications. In this study, we focus on producing an arbitrary dual linear chirped microwave signal that offers configurable bandwidth within a predetermined frequency range. Our approach relies on optical external modulation as the foundation of the photonic method. By cascading two Mach-Zehnder Modulators (MZMs) functioning at the Minimum Transmission Point (MITP), we effectively suppress carrier signals in the modulated output. Through this technique, we successfully generate dual linear chirp microwave signals by superimposing an electrical baseband chirp signal onto the externally modulated signal in the optical domain. This approach demonstrates the potential to create microwave waveforms with wide bandwidth and linear chirping, opening up new possibilities in satellite communication, radar systems, and other advanced applications.

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Frequency quadrupled/ twelve-tupled millimeter-wave ROF system without bit walk-off effect by a dual parallel polarization modulator

Chen,

Liang

et al. 2025

Optics & Laser Technology

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Generation of arbitrary shape microwave waveform centered on two fold cascaded Mach–Zehnder modulators

Cited by 3 publications

References 23 publications

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

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

Advancing microwave waveform generation: photonic dual linear chirp modulation with configurable bandwidth

Frequency quadrupled/ twelve-tupled millimeter-wave ROF system without bit walk-off effect by a dual parallel polarization modulator

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