Pub Date : 2021-09-26DOI: 10.23919/MOC52031.2021.9598107
Y. Yoshizawa
Hamamatsu Photonics has been providing photomultiplier tubes for Neutrino physics experiments for long time. 20-inch photomultiplier tube is one of them. It was used for Kamiokande and Super-Kamiokande and will be used for Hyper-Kamiokande. Developmental stories for Kamiokande, Super-Kamiokande and Hyper-Kamiokande are described in this paper.
{"title":"Development of 20-inch Photomultiplier Tube for Neutrino Experiments","authors":"Y. Yoshizawa","doi":"10.23919/MOC52031.2021.9598107","DOIUrl":"https://doi.org/10.23919/MOC52031.2021.9598107","url":null,"abstract":"Hamamatsu Photonics has been providing photomultiplier tubes for Neutrino physics experiments for long time. 20-inch photomultiplier tube is one of them. It was used for Kamiokande and Super-Kamiokande and will be used for Hyper-Kamiokande. Developmental stories for Kamiokande, Super-Kamiokande and Hyper-Kamiokande are described in this paper.","PeriodicalId":355935,"journal":{"name":"2021 26th Microoptics Conference (MOC)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126371109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-26DOI: 10.23919/MOC52031.2021.9598051
Mao Xiaojie, Miyamoto Tomoyuki
Optical wireless power transmission (OWPT) systems are attractive photonic systems. However, OWPT has safety problems such as unexpected and unnecessary light irradiation. In this report, an improved safety system based on a depth camera is constructed, and response time of less than 60 ms and detection range limit are confirmed.
{"title":"Safety System of Optical Wireless Power Transmission by Suppressing Light Beam Irradiation to Human using Depth Camera","authors":"Mao Xiaojie, Miyamoto Tomoyuki","doi":"10.23919/MOC52031.2021.9598051","DOIUrl":"https://doi.org/10.23919/MOC52031.2021.9598051","url":null,"abstract":"Optical wireless power transmission (OWPT) systems are attractive photonic systems. However, OWPT has safety problems such as unexpected and unnecessary light irradiation. In this report, an improved safety system based on a depth camera is constructed, and response time of less than 60 ms and detection range limit are confirmed.","PeriodicalId":355935,"journal":{"name":"2021 26th Microoptics Conference (MOC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116662488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-26DOI: 10.23919/MOC52031.2021.9598019
Y. Sawada, T. Fujisawa, Takanori Sato, K. Saitoh
We propose a switchable mode converter which converts TE0 mode into any one of the first four TE modes. The device includes TE0-TE1 mode converter designed by wavefront matching method. Mode conversion efficiencies are larger than -0.39 dB and modal crosstalks are lower than -23 dB at 1550 nm.
{"title":"Switchable Mode Converter for Four-Mode MDM System Assisted by Passive Mode Controlling Device Designed by Wavefront Matching Method","authors":"Y. Sawada, T. Fujisawa, Takanori Sato, K. Saitoh","doi":"10.23919/MOC52031.2021.9598019","DOIUrl":"https://doi.org/10.23919/MOC52031.2021.9598019","url":null,"abstract":"We propose a switchable mode converter which converts TE0 mode into any one of the first four TE modes. The device includes TE0-TE1 mode converter designed by wavefront matching method. Mode conversion efficiencies are larger than -0.39 dB and modal crosstalks are lower than -23 dB at 1550 nm.","PeriodicalId":355935,"journal":{"name":"2021 26th Microoptics Conference (MOC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116178447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-26DOI: 10.23919/MOC52031.2021.9598151
T. Lühmann, S. Pazzagna, J. Meijer
Due to their extraordinary properties, colour centres in diamond can be used for quantum information as well as for sensor tasks. Up to now the NV centre has been in focus. In this paper, techniques to optimize the color creation yield and methods to find new centres are considered.
{"title":"Color centers with exceptional properties in diamond","authors":"T. Lühmann, S. Pazzagna, J. Meijer","doi":"10.23919/MOC52031.2021.9598151","DOIUrl":"https://doi.org/10.23919/MOC52031.2021.9598151","url":null,"abstract":"Due to their extraordinary properties, colour centres in diamond can be used for quantum information as well as for sensor tasks. Up to now the NV centre has been in focus. In this paper, techniques to optimize the color creation yield and methods to find new centres are considered.","PeriodicalId":355935,"journal":{"name":"2021 26th Microoptics Conference (MOC)","volume":"301 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130051759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-26DOI: 10.23919/MOC52031.2021.9598031
S. Saito
We discuss angular-momentum conservation law for spin and orbital angular momentum for a vortex generated by a silicon photonic gear, which is a ring resonator with an inner grating. The gear is coupled to two bus-waveguides to control the chirality of the emitted vortex out of the gear.
{"title":"Conservation Law of Spin & Orbital Angular Momentum for a Vortex Generated by a Silicon Photonic Gear","authors":"S. Saito","doi":"10.23919/MOC52031.2021.9598031","DOIUrl":"https://doi.org/10.23919/MOC52031.2021.9598031","url":null,"abstract":"We discuss angular-momentum conservation law for spin and orbital angular momentum for a vortex generated by a silicon photonic gear, which is a ring resonator with an inner grating. The gear is coupled to two bus-waveguides to control the chirality of the emitted vortex out of the gear.","PeriodicalId":355935,"journal":{"name":"2021 26th Microoptics Conference (MOC)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134317143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-26DOI: 10.23919/MOC52031.2021.9598115
Keiichiro Shoda, Xiao He, Keiichiro Kozu, Haisong Jiang, K. Hamamoto
MMI like power coupler using nano-pixel exhibits unique “equivalent” input of, not only intensity, phase. The simulated results show equivalent input (intensity and phase) coupling capability, with 1/500 times compact foot-print.
{"title":"Demonstration of Equal Input (Intensity and Phase) MMI Like Power Coupler by using Nano-Pixel Structure","authors":"Keiichiro Shoda, Xiao He, Keiichiro Kozu, Haisong Jiang, K. Hamamoto","doi":"10.23919/MOC52031.2021.9598115","DOIUrl":"https://doi.org/10.23919/MOC52031.2021.9598115","url":null,"abstract":"MMI like power coupler using nano-pixel exhibits unique “equivalent” input of, not only intensity, phase. The simulated results show equivalent input (intensity and phase) coupling capability, with 1/500 times compact foot-print.","PeriodicalId":355935,"journal":{"name":"2021 26th Microoptics Conference (MOC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128632230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-26DOI: 10.23919/MOC52031.2021.9598042
Yunjie Wang, Haisong Jiang, K. Hamamoto
Space-mode compressor by using nano-pixel optical waveguide is proposed. Simulated results show more than 50% compressions of the input light for 0th and 1st order-modes.
{"title":"Proposal of space-mode “compressor” by using nano-pixel","authors":"Yunjie Wang, Haisong Jiang, K. Hamamoto","doi":"10.23919/MOC52031.2021.9598042","DOIUrl":"https://doi.org/10.23919/MOC52031.2021.9598042","url":null,"abstract":"Space-mode compressor by using nano-pixel optical waveguide is proposed. Simulated results show more than 50% compressions of the input light for 0<sup>th</sup> and 1<sup>st</sup> order-modes.","PeriodicalId":355935,"journal":{"name":"2021 26th Microoptics Conference (MOC)","volume":"546 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131864001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-26DOI: 10.23919/MOC52031.2021.9598026
W. Osten
Digitization and digital transition are frequently used terms in modern communication. Facts as the transition of the classical Data-Internet to the Internet of Things IoT, and Industrial Internet, respectively, are more and more influencing all technologies and thus it is quite appropriate to think about the future of metrology in such a changing environment. In this paper we discuss the state of the art, the challenges, and the perspectives of optical metrology in times of digital transition.
{"title":"Optical Metrology and Sensing in Times of Digital Transition","authors":"W. Osten","doi":"10.23919/MOC52031.2021.9598026","DOIUrl":"https://doi.org/10.23919/MOC52031.2021.9598026","url":null,"abstract":"Digitization and digital transition are frequently used terms in modern communication. Facts as the transition of the classical Data-Internet to the Internet of Things IoT, and Industrial Internet, respectively, are more and more influencing all technologies and thus it is quite appropriate to think about the future of metrology in such a changing environment. In this paper we discuss the state of the art, the challenges, and the perspectives of optical metrology in times of digital transition.","PeriodicalId":355935,"journal":{"name":"2021 26th Microoptics Conference (MOC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133157947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-26DOI: 10.23919/MOC52031.2021.9598044
M. S. Mohamed, S. Forouhar
We present a rib waveguide design in beta-barium borate-on-insulator platform for coherent deep-ultraviolet generation down to a wavelength of 230 nm via nonlinear frequency conversion.
{"title":"Beta-Barium Borate-on-Insulator Waveguide Design for Coherent Deep-Ultraviolet Light Generation","authors":"M. S. Mohamed, S. Forouhar","doi":"10.23919/MOC52031.2021.9598044","DOIUrl":"https://doi.org/10.23919/MOC52031.2021.9598044","url":null,"abstract":"We present a rib waveguide design in beta-barium borate-on-insulator platform for coherent deep-ultraviolet generation down to a wavelength of 230 nm via nonlinear frequency conversion.","PeriodicalId":355935,"journal":{"name":"2021 26th Microoptics Conference (MOC)","volume":"145 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123174009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-26DOI: 10.23919/MOC52031.2021.9598066
Masayuki Kawasako, Toshio Watanabe, T. Nagayama, S. Fukushima
We examine the characteristics of a 4-stage nested Mach-Zehnder interferometer optical switch with phase generating couplers, and demonstrate that crosstalk is suppressed to less than -40 dB over 200nm wavelength range from 1450 to 1650 nm by choosing six ports among 16 output ports.
{"title":"4-Stage Mach-Zehnder Interferometer Optical Switch with Phase Generating Couplers","authors":"Masayuki Kawasako, Toshio Watanabe, T. Nagayama, S. Fukushima","doi":"10.23919/MOC52031.2021.9598066","DOIUrl":"https://doi.org/10.23919/MOC52031.2021.9598066","url":null,"abstract":"We examine the characteristics of a 4-stage nested Mach-Zehnder interferometer optical switch with phase generating couplers, and demonstrate that crosstalk is suppressed to less than -40 dB over 200nm wavelength range from 1450 to 1650 nm by choosing six ports among 16 output ports.","PeriodicalId":355935,"journal":{"name":"2021 26th Microoptics Conference (MOC)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123392285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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