Novel Lightwave-Interferometric Phase Detection for Phase Stabilization of Two-Tone Coherent Millimeter-Wave/Microwave Carrier Generation

Takeuchi, Shota; Sakuma, Kazuki; Kato, Kazutoshi; Yoshimizu, Yasuyuki; Yasuda, Y.; Hisatake, Shintaro; Nagatsuma, Tadao

doi:10.1587/transele.e99.c.1048

Cited by 7 publications

(2 citation statements)

References 5 publications

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“…In previous research, we developed a phase stabilization system using the Mach-Zehnder Interferometric (MZI) phase stabilization method [48][49][50]. This method involved introducing a pilot lightwave, f 0 , into the THz-wave intensity-modulation (IM)/coherent detection (CD) system, which can be considered an MZI, as shown in Figure 4.…”

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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“…However, with increasing the frequency, output power at electrically generating terahertz-wave device is degrading. 5) The multiplier, [6][7][8][9][10][11] the resonant tunneling diode [12][13][14] and the photomixer [15][16][17][18][19] have been studying as a terahertz-wave generator. Among these devices the multiplier has showed higher output power which is thanks to rapid progress in CMOS technology.…”

Section: Introductionmentioning

confidence: 99%

700 GHz terahertz wave beam combination by optical phase control

Zhou

Nishiyama

Itô

et al. 2019

Jpn. J. Appl. Phys.

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We investigated the feasibility of terahertz wave beam combination with optical phase control using arrayed photomixers at 700 GHz which is the upper region at the 600-700 GHz atmospheric window. Experimental results showed that combined power superlinearly increases with the number of photomixers/antennas, which follows the array antenna theory, and becomes ten times at four arrayed configuration. This confirms that the wave combination with a directional gain is enabled at 600-700 GHz band by the photonics technology.

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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.

show abstract

Novel Lightwave-Interferometric Phase Detection for Phase Stabilization of Two-Tone Coherent Millimeter-Wave/Microwave Carrier Generation

Cited by 7 publications

References 5 publications

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

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

700 GHz terahertz wave beam combination by optical phase control

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

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