Photonic Phase Stabilization Control System for Terahertz-Wave Phase Modulation

Shiramizu, Takashi; Ibrahim, Amalina Athira; Ye, Shenghong; Mikami, Yuya; Kato, Kazutoshi

doi:10.23919/oecc/psc53152.2022.9850107

Cited by 4 publications

(1 citation statement)

References 3 publications

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“…To address this limitation, the pilot lightwave was introduced along a backward direction. Figure 5 illustrates the use of a 100 mm-long lithium niobate (LN) phase modulator to modulate the phase of lightwaves [51]. The modulation is achieved by applying an electrical signal to the traveling-wave electrode of the LN modulator, causing a shift in the phase of the lightwave passing through it.…”

Section: Phase Stabilization Methodsmentioning

confidence: 99%

Phase Stabilization of a Terahertz Wave Using Mach–Zehnder Interference Detection

Ibrahim

et al. 2023

Electronics

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As a high-frequency carrier, the terahertz (THz) wave is essential for achieving high-data-rate wireless transmission due to its ultra-wide bandwidth. Phase stabilization becomes crucial to enable phase-shift-based multilevel modulation for high-speed data transmission. We developed a Mach–Zehnder interferometric phase stabilization technique for photomixing, which has proved a promising method for phase-stable continuous THz-wave generation. However, this method faced inefficiencies in generating phase-modulated THz waves due to the impact of the phase modulator on the phase stabilization system. By photomixing, which is one of the promising methods for generating THz waves, the phase of the generated THz waves can be controlled in the optical domain so that the stability of the generated THz wave can be controlled by photonics technologies. Thus, we devised a new phase stabilization approach using backward-directional lightwave, which is overlapped with the THz wave generation system. This study presented a conceptual and experimental framework for stabilizing the phase differences of optical carrier signals. We compared the optical domain and transmission performances between forward-directional and backward-directional phase stabilization methods. Remarkably, our results demonstrated error-free transmission at a modulation frequency of 3 Gbit/s and higher.

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Section: Phase Stabilization Methodsmentioning

confidence: 99%

Phase Stabilization of a Terahertz Wave Using Mach–Zehnder Interference Detection

Ibrahim

et al. 2023

Electronics

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Phase Stabilization of a Terahertz Wave using Mach-Zehnder Interference Detection

Ibrahim¹,

Li²,

Ye³

et al. 2023

Preprint

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As a high-frequency carrier, the Terahertz (THz) wave is essential for achieving high-data-rate wireless transmission due to its ultra-wide bandwidth. Phase stabilization becomes crucial to enable phase-shift-based multilevel modulation for high-speed data transmission. We developed a Mach-Zehnder interferometric phase stabilization technique for photomixing, which has proved a promising method for phase-stable continuous THz-wave generation. However, this method faces inefficiencies in generating phase-modulated THz waves due to the impact of the phase modulator on the phase stabilization system. By photomixing, which is one of the promising methods for generating THz waves, the phase of the generated THz waves can be controlled in the optical domain so that the stability of the generated THz wave can be controlled by photonics technologies. Thus, we have devised a new phase stabilization approach using backward-directional lightwave, which is overlapped with the THz wave generation system. This study presents a conceptual and experimental framework for stabilizing the phase differences of optical carrier signals. We compare the optical domain and transmission performances between forward-directional and backward-directional phase stabilization methods. Remarkably, our results demonstrate error-free transmission at a modulation frequency of 3 Gbit/s and higher.

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Terahertz-Wave Phase Modulation Enabled by Optical Interferometric Phase Stabilization

Ibrahim

Chen

Shiramizu

et al. 2022

2022 Asia-Pacific Microwave Conference (APMC)

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Photonic Phase Stabilization Control System for Terahertz-Wave Phase Modulation

Cited by 4 publications

References 3 publications

Phase Stabilization of a Terahertz Wave Using Mach–Zehnder Interference Detection

Phase Stabilization of a Terahertz Wave Using Mach–Zehnder Interference Detection

Phase Stabilization of a Terahertz Wave using Mach-Zehnder Interference Detection

Terahertz-Wave Phase Modulation Enabled by Optical Interferometric Phase Stabilization

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