ELECTRO-OPTIC MICROWAVE-LIGHTWAVE CONVERTERS UTILIZING PATCH ANTENNAS WITH ORTHOGONAL GAPS

2012 ◽  
Vol 21 (01) ◽  
pp. 1250001 ◽  
Author(s):  
YUSUF NUR WIJAYANTO ◽  
HIROSHI MURATA ◽  
YASUYUKI OKAMURA
Keyword(s):  
Power Supply ◽  
Optical Waveguides ◽  
Electromagnetic Compatibility ◽  
Optical Modulation ◽  
Patch Antennas ◽  
Electro Optic ◽  
Wireless Signal ◽  
Microwave Signals ◽  
External Power ◽  
Fiber Link

We propose a new electro-optic microwave-lightwave converter using two orthogonal optical waveguides and patch antennas embedded with two orthogonal gaps. Wireless microwave signals can be received, separated and converted directly to lightwave signals through optical modulation using the proposed device. This device operates with no external power supply and with low microwave distortion. In addition, it enables us to measure the magnitude, phase and polarization of the wireless signal simultaneously. Experimental demonstrations of the device were presented at the operation frequency of 26 GHz. The device can be applied for electromagnetic compatibility test in the radio-over-fiber link.

scholarly journals Microwave and Optical Electric Field Interaction in Microwave Polarization Detector Based on Photonic Technology for EMC Measurement

2016 ◽  
Vol 16 (1) ◽  
pp. 7 ◽  
Author(s):  
Yusuf Nur Wijayanto ◽  
Hiroshi Murata ◽  
I Dewa Putu Hermida
Keyword(s):  
Electric Field ◽  
Optical Waveguides ◽  
Electromagnetic Compatibility ◽  
Patch Antennas ◽  
Field Interaction ◽  
Electro Optic ◽  
Wireless Signal ◽  
Microwave Signals ◽  
External Power ◽  
Fiber Link

We analyze the interaction of microwave and optical electric field in a microwave polarization detector based on photonic technology for Electromagnetic Compatibility (EMC) measurement. The detector consists of two orthogonal optical waveguides and patch antennas embedded with two orthogonal gaps fabricated on an Electro-Optic (EO) crystal. Wireless microwave signals can be received, separated and converted directly to lightwave signals through optical modulation using the proposed detector. This detector operates with no external power supply and with low microwave distortion. Microwave polarization can be identified using the proposed interface. In addition, it enables us to measure the magnitude and phase of the wireless signal simultaneously. The analysis of the device was done and presented at the operation frequency of 26 GHz. The proposed interface can be applied for EMC measurement through the radio-over-fiber link.

scholarly journals Optical Modulator Using Channel Optical Waveguides and Planar Patch-Antennas with Gaps

2016 ◽  
Vol 15 (2) ◽  
pp. 50
Author(s):  
Yusuf Nur Wijayanto ◽  
Hiroshi Murata ◽  
Yasuyuki Okamura
Keyword(s):  
Power Supply ◽  
Optical Waveguides ◽  
Microwave Signal ◽  
Optical Modulator ◽  
Patch Antennas ◽  
Compact Structure ◽  
Optical Crystals ◽  
External Power ◽  
Narrow Gaps ◽  
External Power Supply

Optical modulator using channel optical waveguides and planar patch-antennas with gaps on ferroelectric optical crystals were proposed. Basic operations for receiving a wireless microwave signal and directly converting it to a lightwave signal were demonstrated successfully using a prototype device with simple and compact structure. These devices operate with no external power supply and no additional modulation electrode. Therefore the microwave-lightwave conversion with low microwave distortion can be obtained. The advanced microwave-lightwave converters using patch-antennas with a pair of narrow gaps and their applications are also discussed

Multi-layered stacked patch-antennas on electro-Optic material for optical modulation

2016 ◽  
Author(s):  
Y.N. Wijayanto ◽  
A. Kanno ◽  
T. Kawanishi ◽  
H. Murata ◽  
T. Umezawa ◽  
...  
Keyword(s):  
Optical Modulation ◽  
Patch Antennas ◽  
Electro Optic

Equivalent Circuits of the 27.5 kV Electric Railway External Power Supply System

2020 ◽  
Vol 8 (8) ◽  
pp. 29-36
Author(s):  
Yeugene P. FIGURNOV ◽  
◽  
Yury I. ZHARKOV ◽  
Nataliya A. POPOVA ◽  
◽  
...  
Keyword(s):  
Power Supply ◽  
Power Supply System ◽  
Supply System ◽  
Equivalent Circuits ◽  
External Power ◽  
Electric Railway ◽  
External Power Supply

Polymeric Thin Films for Electro-Optic Modulator and High Density Optical Memory Applications

1995 ◽  
Vol 392 ◽  
Author(s):  
Larry R. Dalton ◽  
Aaron W. Harper ◽  
Zhiyong Liang ◽  
Jingsong Zhu ◽  
Uzi Efron ◽  
...  
Keyword(s):  
Conformational Changes ◽  
Optical Waveguides ◽  
Optical Memory ◽  
High Density ◽  
Hole Burning ◽  
Spectral Hole Burning ◽  
Polymeric Thin Films ◽  
Buried Channel ◽  
Electro Optic ◽  
Memory Applications

AbstractChromophores capable of undergoing conformational changes when exposed to ultraviolet or visible light have been synthesized with functional groups permitting attachment to polymer matrices. One class of such chromophores, containing reactive functionalities at both ends of the chromophore, are referred to as double-end crosslinkable (DEC) chromophores. These chromophores are used in the synthesis of hardened nonlinear optically active lattices and in the fabrication of buried channel nonlinear optical waveguides by photoprocessing; development of such waveguides represents a critical step in the production of polymeric electro-optic modulators. Such chromophores are also crucial to the phenomena of laser-assisted poling (also known as photochemically-induced poling). Finally, these chromophores are attached to the surface of polystyrene beads permitting the realization of room temperature spectral hole burning exploiting morphology-dependent resonances. Such resonances provide the basis of wavelength coding for the development of high density optical memories.

Study on the Development of Lighting Devices Material Combined with Street Lamp in the Use of Rays of the Sun

2017 ◽  
Vol 864 ◽  
pp. 224-228
Author(s):  
Seung Hyeon You ◽  
Jeong Hwan Lee ◽  
Sung Hoon Oh
Keyword(s):  
Power Supply ◽  
Economic Value ◽  
The Sun ◽  
Led Light ◽  
Lighting Device ◽  
The Future ◽  
Street Lamp ◽  
External Power ◽  
The City

This study has developed street lamp lighting device material that was turned on and off by self-power supply without additional power by using the rays of the sun. Lighting devices have been applied with polycarbonate materials that were outstanding with light transmissivity while using LED light and economic value. Lighting devices are easily installed in various places since external power is not necessary. In addition, it also serves as a function of preventing crime by acquiring intensity of illumination in crime-ridden district in the night. Lighting device can also serve as a function of improving fine view in the city by establishing eco-friendly circumstances including parks, areas around shopping district, and housing areas after being manufactured in the form of flowerpot where can grow plants in the future.

Researches on the Flood Protection and Anti-Seismic Self-Help Bed

2014 ◽  
Vol 945-949 ◽  
pp. 393-396
Author(s):  
Jia Bin Lu ◽  
Hong Sheng Zhao ◽  
Xin Lei Guo
Keyword(s):  
Power Supply ◽  
Flood Control ◽  
Flood Protection ◽  
Storage Battery ◽  
Protection Device ◽  
Personal Safety ◽  
Circular Arch ◽  
Self Help ◽  
External Power ◽  
And Storage

In recent years, floods and earthquakes occur frequently and cause great threats and harm to personal safety. On the basis of my patent named anti-seismic bed, which patent id is 200920287683.8, the flood control and anti-seismic bed is proposed. The anti-seismic bed doesn’t need external power supply and storage battery. When an earthquake occurs, the protection device starts and then an circular arch are formed by rotating protection boards. people are protected in bed body in 0.765s. When floods occur, flood protection airbag is filled with gas and launched by the Atmel89C52 microprocessor and YDE-WDT-P sensors. Bed body can float in the flood. Its functions are similar to the rescue boat and can protect human life’s safety.

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