{"title":"Quantum Well Optical Modulator With Circular Patch Antenna for Millimeter-Wave Radio Over Fiber System","authors":"Ryotaro Nakazawa;Gaku Sekiguchi;Yui Otagaki;Hiroshi Murata;Atsushi Matsumoto;Taro Arakawa","doi":"10.1109/JLT.2024.3445632","DOIUrl":null,"url":null,"abstract":"A circular patch antenna-coupled quantum well optical modulator for 1550 nm is proposed for the incident millimeter-wave polarization angle-independent phase modulation. The core layer of the modulator is composed of a multiple five-layer asymmetric coupled quantum well structure. The design and theoretical millimeter wave reception characteristics of circular and rectangular patch antennas with a gap structure are theoretically discussed for comparison. The circular antenna with an outer radius of 330 μm and a gap radius of 310 μm is designed. The optical phase modulators with both types of antennas are fabricated, and their modulation characteristics in the 60 GHz millimeter wave band are demonstrated and compared. The phase modulation independent of the incident millimeter-wave polarization angle is successfully realized. The CSR of 55.0 dB (3.56 mrad of phase shift) is obtained when irradiated with 60 GHz millimeter waves. The phase shift of 3.0 to 3.6 mrad is obtained at any polarization angle of the radio waves at an incident power density of 4.4 W/m\n<sup>2</sup>\n.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":null,"pages":null},"PeriodicalIF":4.1000,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10638736","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Lightwave Technology","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10638736/","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
A circular patch antenna-coupled quantum well optical modulator for 1550 nm is proposed for the incident millimeter-wave polarization angle-independent phase modulation. The core layer of the modulator is composed of a multiple five-layer asymmetric coupled quantum well structure. The design and theoretical millimeter wave reception characteristics of circular and rectangular patch antennas with a gap structure are theoretically discussed for comparison. The circular antenna with an outer radius of 330 μm and a gap radius of 310 μm is designed. The optical phase modulators with both types of antennas are fabricated, and their modulation characteristics in the 60 GHz millimeter wave band are demonstrated and compared. The phase modulation independent of the incident millimeter-wave polarization angle is successfully realized. The CSR of 55.0 dB (3.56 mrad of phase shift) is obtained when irradiated with 60 GHz millimeter waves. The phase shift of 3.0 to 3.6 mrad is obtained at any polarization angle of the radio waves at an incident power density of 4.4 W/m
2
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期刊介绍:
The Journal of Lightwave Technology is comprised of original contributions, both regular papers and letters, covering work in all aspects of optical guided-wave science, technology, and engineering. Manuscripts are solicited which report original theoretical and/or experimental results which advance the technological base of guided-wave technology. Tutorial and review papers are by invitation only. Topics of interest include the following: fiber and cable technologies, active and passive guided-wave componentry (light sources, detectors, repeaters, switches, fiber sensors, etc.); integrated optics and optoelectronics; and systems, subsystems, new applications and unique field trials. System oriented manuscripts should be concerned with systems which perform a function not previously available, out-perform previously established systems, or represent enhancements in the state of the art in general.