Development and analysis of electric field sensor using LiNbO/sub 3/ optical modulator

Kuwabara, Nobuo; Tajima, Kazuo; Kobayashi, Ryota; Amemiya, Fujio

doi:10.1109/15.179271

Cited by 110 publications

(50 citation statements)

References 6 publications

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“…This problem can be overcome by using electric/optical (E/O) array sensors. There has been many researches on how to improve the sensitivity and stability of the E/O array sensors as the antenna probes [87]- [90]. The SAR measurement is important to evaluate the electromagnetic exposure to the human body caused by mobile devices.…”

Section: Fast Measurement Of Mobile Devicesmentioning

confidence: 99%

Recent Technologies in Japan on Array Antennas for Wireless Systems

Hirokawa

Chen

Fujimoto

et al. 2017

IEICE Trans. Commun.

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SUMMARY Array antenna technology for wireless systems is highly integrated for demands such as multi-functionality and high-performance. This paper details recent technologies in Japan in design techniques based on computational electromagnetics, antenna hardware techniques in the millimeter-wave band, array signal processing to add adaptive functions, and measurement methods to support design techniques, for array antennas for future wireless systems. Prospects of these four technologies are also described. key words: array antenna, multiple antenna, computational electromagnetics, millimeter-wave, antenna measurement, signal processing

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Section: Fast Measurement Of Mobile Devicesmentioning

confidence: 99%

Recent Technologies in Japan on Array Antennas for Wireless Systems

Hirokawa

Chen

Fujimoto

et al. 2017

IEICE Trans. Commun.

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“…Integrated optical E-field sensors have been developed for electromagnetic compatibility (EMC) measurement since 1980s due to their negligible field distortion, high sensitivity, wide frequency response, and compact size [1][2][3][4]. However, the researches mainly focus on how to improve the sensitivity and bandwidth for the measurement of weak radio frequency (RF) E-fields.…”

Section: Introductionmentioning

confidence: 99%

Integrated optical waveguide sensor for lighting impulse electric field measurement

et al. 2014

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A Lithium niobate (LiNbO 3 ) based integrated optical E-field sensor with an optical waveguide Mach-Zehnder interferometer (MZI) and a tapered antenna has been designed and fabricated for the measurement of the pulsed electric field. The minimum detectable E-field of the sensor was 10 kV/m. The sensor showed a good linear characteristic while the input E-fields varied from 10 kV/m to 370 kV/m. Furthermore, the maximum detectable E-field of the sensor, which could be calculated from the sensor input/output characteristic, was approximately equal to 1000 kV/m. All these results suggest that such sensor can be used for the measurement of the lighting impulse electric field.

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“…Electric-field sensors with broad, flat frequency responses are important tools for electromagnetic compatibility and interference (EMC/EMI) measurements, high-frequency electronic circuit diagnostics, medical equipment field monitoring, radiofrequency reception, and high-power microwave detection, and their importance is increasing with the progress in mobile multimedia communications [1,2]. To evaluate EMC, it is necessary to accurately evaluate the strength and distribution of the electromagnetic field surrounding the electronic equipment.…”

Section: Introductionmentioning

confidence: 99%

Integrated-Optic Electric-Field Sensor Utilizing a Ti:LiNbO₃Y-fed Balanced-Bridge Mach-Zehnder Interferometric Modulator With a Segmented Dipole Antenna

Jung¹

2014

Journal of the Optical Society of Korea

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We have demonstrated a Ti:LiNbO3 electro-optic electric-field sensor utilizing a 1×2 Y-fed balanced-bridge Mach-Zehnder interferometric (YBB-MZI) modulator, which uses a 3-dB directional coupler at the output and has two complementary output waveguides. A dc switching voltage of ~25 V and an extinction ratio of ~12.5 dB are observed at a wavelength of 1.3 μm. For a 20 dBm rf input power, the minimum detectable electric fields are ~8.21, 7.24, and ~13.3 V/m, corresponding to dynamic ranges of ~10, ~12, and ~7 dB at frequencies of 10, 30, and 50 MHz respectively. The sensors exhibit almost linear response for an applied electric-field intensity from 0.29 V/m to 29.8 V/m.

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Development and analysis of electric field sensor using LiNbO/sub 3/ optical modulator

Cited by 110 publications

References 6 publications

Recent Technologies in Japan on Array Antennas for Wireless Systems

Recent Technologies in Japan on Array Antennas for Wireless Systems

Integrated optical waveguide sensor for lighting impulse electric field measurement

Integrated-Optic Electric-Field Sensor Utilizing a Ti:LiNbO₃Y-fed Balanced-Bridge Mach-Zehnder Interferometric Modulator With a Segmented Dipole Antenna

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Development and analysis of electric field sensor using LiNbO/sub 3/ optical modulator

Cited by 110 publications

References 6 publications

Recent Technologies in Japan on Array Antennas for Wireless Systems

Recent Technologies in Japan on Array Antennas for Wireless Systems

Integrated optical waveguide sensor for lighting impulse electric field measurement

Integrated-Optic Electric-Field Sensor Utilizing a Ti:LiNbO3Y-fed Balanced-Bridge Mach-Zehnder Interferometric Modulator With a Segmented Dipole Antenna

Contact Info

Product

Resources

About

Integrated-Optic Electric-Field Sensor Utilizing a Ti:LiNbO₃Y-fed Balanced-Bridge Mach-Zehnder Interferometric Modulator With a Segmented Dipole Antenna