This special issue of JEOS:RP offers a great opportunity to looking back to the general world congress for optics and photonics ICO-25-OWLS-16 of the International Commission for Optics (ICO) and the international society for Optics Within Life Sciences (OWLS), which was celebrated in-person after two postponements from 5th to 9th September 2022 at the TU Dresden, Dresden, Germany. The general world congress was sponsored by ICO, OWLS, and TU Dresden, and financially co-sponsoring by the DGaO – The German Branch of EOS, Carl Zeiss AG, OPTICA (The society advancing optics and photonic worldwide, formerly OSA), SPIE (The International Society for Optics and Photonics – Connect Minds and Advance Light), Photonics Society of IEEE (Institute of Electrical and Electronics Engineers), IUPAP (The International Union of Pure and Applied Physics) and the City of Dresden. The EOS (European Optical Society), LAM (African Laser, Atomic and Molecular Physics Network), and RIAO (The Iberian American Network on Optics) have technically co-sponsored the general world congress. Preparations for the general world congress were underway immediately after the ICO-24 in Tokyo, Japan, 2017, but had to be halted in 2020 due to the Covid-19 pandemic. The general world congress was postponed to 2021, but could not be held again. Luckily, due to a wise decision by ICO, there was no switch to digital presentation. Great efforts have been made to increase the number of female speakers with extraordinary commitment of the international Technical Program Committee (TPC), especially by Wolfgang Osten. The outstanding engagement of Frank Hoeller, Associate Secretary of ICO from 2017 to 2021, has to be highlighted. The ICO mourns his passing away and the participants thought with a moment of silence. To commemorate of Frank Hoeller, the DGaO exhibited a poster at the congress. Most hurdles were taken together with the commitment of the worldwide network of sponsors and co-sponsors, the TPC, especially the program chairs Wolfgang Osten and Alexander Heisterkamp, the fundraising chair Michael Pfeffer, and the adviser Bernd Kleemann, and the unbelievable commitment of the local team, especially from the chairs of the local team Nektarios Koukourakis and Lars Buettner. “Optics & Photonics for a better World” is the motto of ICO with the objective to contribute, on an international basis, to the progress of the science of optics and photonics and their applications with emphasizes the unity of the crossdisciplinary field of optics. We thank the Secretary General Humberto Michinel and the President John C. Howell for the sustainable decisions and trust. We acknowledge the crucial support of TU Dresden too. The worldwide General Congress was celebrated with participants from 55 countries of 5A (Africa, Asia, Australia, America and Amazing Europe). For the first time in the history of ICO, a joint General World Congress was celebrated together with OWLS. Memorable in-person talks by thre
这期JEOS:RP特刊提供了一个很好的机会来回顾国际光学委员会(ICO)和国际生命科学光学学会(owl)的世界光学和光子学大会ICO-25-OWLS-16，该大会于2022年9月5日至9日在德国德累斯顿工业大学德累斯顿举行的两次延期后亲自庆祝。世界大会由ICO、ols和德累斯顿工业大学赞助，并由DGaO (EOS德国分部)、卡尔蔡司股份公司、OPTICA(全球推进光学和光子学会，前身为OSA)、SPIE(国际光学和光子学学会-连接思想和推进光)、IEEE(电气和电子工程师学会)光子学学会、IUPAP(国际纯粹和应用物理联合会)和德累斯顿市共同资助。EOS(欧洲光学学会)、LAM(非洲激光、原子和分子物理网络)和RIAO(伊比利亚美洲光学网络)在技术上共同主办了这次世界大会。2017年第24届世界大会在日本东京举行后，世界大会的筹备工作立即开始，但由于新冠肺炎大流行，不得不在2020年暂停。世界大会被推迟到2021年，但不能再次举行。幸运的是，由于ICO的明智决定，没有切换到数字演示。在国际技术计划委员会(TPC)的大力支持下，特别是沃尔夫冈·奥斯滕，为增加女性演讲者的数量做出了巨大努力。2017年至2021年担任ICO副秘书的Frank Hoeller的杰出贡献值得强调。ICO对他的去世表示哀悼，与会者默哀。为了纪念弗兰克·霍勒，国会问责局在大会上展出了一张海报。大多数障碍都是与全球赞助商和共同赞助商的承诺一起克服的，TPC，特别是项目主席Wolfgang Osten和Alexander Heisterkamp，筹款主席Michael Pfeffer和顾问Bernd Kleemann，以及当地团队令人难以置信的承诺，特别是来自当地团队主席Nektarios Koukourakis和Lars Buettner。“Optics & Photonics for a better World”是ICO的座右铭，其目标是在国际基础上为光学和光子学科学及其应用的进步做出贡献，并强调光学跨学科领域的统一。我们感谢秘书长温贝托·米歇尔和约翰·c·豪厄尔主席作出的可持续的决定和信任。我们也感谢德累斯顿工业大学的重要支持。来自55个5A国家(非洲、亚洲、澳大利亚、美洲和神奇欧洲)的代表参加了全球大会。这是ICO历史上第一次与owl共同举办世界大会。三位诺贝尔奖得主亲自发表了令人难忘的演讲。格姆拉德·莫鲁，2018年诺贝尔奖，题为“造福科学和社会的极端光”，斯蒂芬·W·赫尔，2014年诺贝尔奖，题为“光学显微镜:分辨率革命”，莱因哈德·根泽尔，2020年诺贝尔奖，题为“40年的旅程”。两页的任务摘要和海报已在网站http://ico25.org/上发布。在本期特刊中，我们非常高兴地介绍六篇扩展论文。Pieter H nethling等人在“用于显微镜应用的新型时间分辨CARS实现”这篇论文中提出了一种基于空间光调制器的相干反斯托克斯拉曼光谱(CARS)的时间压缩。由Claudia Bett等人撰写的令人兴奋的论文“评估时间门控单像素相机作为恶劣天气条件下自动驾驶汽车传感器的前景”讨论了单像素相机在汽车应用中的新应用领域。Dennis Pohle等人在有远见的论文“使用多平面光转换的自适应少模光纤多路复用器的智能自校准工具”中提出了光纤中自适应模式多路复用的数字孪生方法，《光推进社会》，大会ico -25- owls -16- dresden -德国-2022的特刊
{"title":"Special commemorative issue from the general world congress ICO-25-OWLS-16-Dresden-Germany-2022-Advancing Society with Light","authors":"Juergen W. Czarske, N. Koukourakis, Lars Buettner","doi":"10.1051/jeos/2023033","DOIUrl":"https://doi.org/10.1051/jeos/2023033","url":null,"abstract":"This special issue of JEOS:RP offers a great opportunity to looking back to the general world congress for optics and photonics ICO-25-OWLS-16 of the International Commission for Optics (ICO) and the international society for Optics Within Life Sciences (OWLS), which was celebrated in-person after two postponements from 5th to 9th September 2022 at the TU Dresden, Dresden, Germany. The general world congress was sponsored by ICO, OWLS, and TU Dresden, and financially co-sponsoring by the DGaO – The German Branch of EOS, Carl Zeiss AG, OPTICA (The society advancing optics and photonic worldwide, formerly OSA), SPIE (The International Society for Optics and Photonics – Connect Minds and Advance Light), Photonics Society of IEEE (Institute of Electrical and Electronics Engineers), IUPAP (The International Union of Pure and Applied Physics) and the City of Dresden. The EOS (European Optical Society), LAM (African Laser, Atomic and Molecular Physics Network), and RIAO (The Iberian American Network on Optics) have technically co-sponsored the general world congress. Preparations for the general world congress were underway immediately after the ICO-24 in Tokyo, Japan, 2017, but had to be halted in 2020 due to the Covid-19 pandemic. The general world congress was postponed to 2021, but could not be held again. Luckily, due to a wise decision by ICO, there was no switch to digital presentation. Great efforts have been made to increase the number of female speakers with extraordinary commitment of the international Technical Program Committee (TPC), especially by Wolfgang Osten. The outstanding engagement of Frank Hoeller, Associate Secretary of ICO from 2017 to 2021, has to be highlighted. The ICO mourns his passing away and the participants thought with a moment of silence. To commemorate of Frank Hoeller, the DGaO exhibited a poster at the congress. Most hurdles were taken together with the commitment of the worldwide network of sponsors and co-sponsors, the TPC, especially the program chairs Wolfgang Osten and Alexander Heisterkamp, the fundraising chair Michael Pfeffer, and the adviser Bernd Kleemann, and the unbelievable commitment of the local team, especially from the chairs of the local team Nektarios Koukourakis and Lars Buettner. “Optics & Photonics for a better World” is the motto of ICO with the objective to contribute, on an international basis, to the progress of the science of optics and photonics and their applications with emphasizes the unity of the crossdisciplinary field of optics. We thank the Secretary General Humberto Michinel and the President John C. Howell for the sustainable decisions and trust. We acknowledge the crucial support of TU Dresden too. The worldwide General Congress was celebrated with participants from 55 countries of 5A (Africa, Asia, Australia, America and Amazing Europe). For the first time in the history of ICO, a joint General World Congress was celebrated together with OWLS. Memorable in-person talks by thre","PeriodicalId":674,"journal":{"name":"Journal of the European Optical Society-Rapid Publications","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57899249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Junyi Yan, Yi Li, Mengdi Zou, Jincheng Mei, J. Zhuang, Xingping Wang, Xin Zhang, Yuda Wu, Chuang Peng, Wenyan Dai, Zhen Yuan, Ke Lin
We propose an ultra-broadband near- to mid-infrared (NMIR) tunable absorber based on VO2 hybrid multi-layer nanostructure by hybrid integration of the upper and the lower parts. The upper part is composed of VO2 nano cylindrical arrays prepared on the front illuminated surface of quartz substrate, and VO2 square films and VO2/SiO2/VO2 square nanopillar arrays prepared on the back surface. The lower part is an array of SiO2/Ti/VO2 nanopillars on Ti substrate. The effects of different structural parameters and temperature on the absorption spectra were analyzed by the finite-difference time-domain method. An average absorption rate of up to 94.7% and an ultra-wide bandwidth of 6.5 μm were achieved in NMIR 1.5-8 μm. Neither vertical incident light with different polarization angles nor large inclination incident light has a significant effect on the absorption performance of the absorber. The ultra-broadband high absorption performance of this absorber will be widely used in NMIR photodetectors and other new optoelectronic devices.
{"title":"Ultra-broadband and tunable infrared absorber based on VO2 hybrid multi-layer nanostructure","authors":"Junyi Yan, Yi Li, Mengdi Zou, Jincheng Mei, J. Zhuang, Xingping Wang, Xin Zhang, Yuda Wu, Chuang Peng, Wenyan Dai, Zhen Yuan, Ke Lin","doi":"10.1051/jeos/2022017","DOIUrl":"https://doi.org/10.1051/jeos/2022017","url":null,"abstract":"We propose an ultra-broadband near- to mid-infrared (NMIR) tunable absorber based on VO2 hybrid multi-layer nanostructure by hybrid integration of the upper and the lower parts. The upper part is composed of VO2 nano cylindrical arrays prepared on the front illuminated surface of quartz substrate, and VO2 square films and VO2/SiO2/VO2 square nanopillar arrays prepared on the back surface. The lower part is an array of SiO2/Ti/VO2 nanopillars on Ti substrate. The effects of different structural parameters and temperature on the absorption spectra were analyzed by the finite-difference time-domain method. An average absorption rate of up to 94.7% and an ultra-wide bandwidth of 6.5 μm were achieved in NMIR 1.5-8 μm. Neither vertical incident light with different polarization angles nor large inclination incident light has a significant effect on the absorption performance of the absorber. The ultra-broadband high absorption performance of this absorber will be widely used in NMIR photodetectors and other new optoelectronic devices.","PeriodicalId":674,"journal":{"name":"Journal of the European Optical Society-Rapid Publications","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45014426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rosa Ana Perez-Herrera, P. Roldán-Varona, A. Sanchez-Gonzalez, L. Rodríguez-Cobo, J. López-Higuera, Manuel Manuel Lopez-Amo
A wavelength-switchable L-band erbium-doped fiber laser (EDFL) assisted by an artificially controlled backscattering (ACB) fiber reflector is here presented. This random reflector was inscribed by femtosecond (fs) laser direct writing on the axial axis of a multimode fiber with 50 µm core and 125 µm cladding with a length of 17 mm. This microstructure was placed inside a surgical syringe to be positioned in the center of a high-precision rotation mount to accurately control its angle of rotation. Only by rotating this mount, three different output spectra were obtained: a single wavelength lasing centered at 1574.75 nm, a dual wavelength lasing centered at 1574.75 nm and 1575.75 nm, and a single wavelength lasing centered at 1575.5 nm. All of them showed an optical signal-to-noise ratio (OSNR) of around 60 dB when pumped at 300 mW.
{"title":"Wavelength-switchable L-band Fiber Laser Assisted by Random Reflectors","authors":"Rosa Ana Perez-Herrera, P. Roldán-Varona, A. Sanchez-Gonzalez, L. Rodríguez-Cobo, J. López-Higuera, Manuel Manuel Lopez-Amo","doi":"10.1051/jeos/2022015","DOIUrl":"https://doi.org/10.1051/jeos/2022015","url":null,"abstract":"A wavelength-switchable L-band erbium-doped fiber laser (EDFL) assisted by an artificially controlled backscattering (ACB) fiber reflector is here presented. This random reflector was inscribed by femtosecond (fs) laser direct writing on the axial axis of a multimode fiber with 50 µm core and 125 µm cladding with a length of 17 mm. This microstructure was placed inside a surgical syringe to be positioned in the center of a high-precision rotation mount to accurately control its angle of rotation. Only by rotating this mount, three different output spectra were obtained: a single wavelength lasing centered at 1574.75 nm, a dual wavelength lasing centered at 1574.75 nm and 1575.75 nm, and a single wavelength lasing centered at 1575.5 nm. All of them showed an optical signal-to-noise ratio (OSNR) of around 60 dB when pumped at 300 mW.","PeriodicalId":674,"journal":{"name":"Journal of the European Optical Society-Rapid Publications","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42306075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Donodin, E. Manuylovich, V. Dvoyrin, Francesco Da Ros, A. Carena, D. Zibar, W. Forysiak, S. Turitsyn, Ann Margareth Rosa Brusin, Uiara Celine de Moura
Bismuth-doped fiber amplifiers offer an attractive solution for meeting continuously growing enormous demand on the bandwidth of modern communication systems. However, practical deployment of such amplifiers require massive development and optimization efforts with the numerical modeling being the core design tool. The numerical optimization of bismuth-doped fiber amplifiers is challenging due to a large number of unknown parameters in the conventional rate equations models. We propose here a new approach to develop a bismuth-doped fiber amplifier model based on a neural network purely trained with experimental data sets in E- and S-bands. This method allows a robust prediction of the amplifier operation that incorporates variations of fiber properties due to manufacturing process and any fluctuations of the amplifier characteristics. Using the proposed approach the spectral dependencies of gain and noise figure for given bi-directional pump currents and input signal powers have been obtained. The low mean (less than 0.19 dB) and standard deviation (less than 0.09 dB) of the maximum error are achieved for gain and noise figure predictions in the 1410-1490 nm spectral band.
{"title":"Neural network modeling of bismuth-doped fiber amplifier","authors":"A. Donodin, E. Manuylovich, V. Dvoyrin, Francesco Da Ros, A. Carena, D. Zibar, W. Forysiak, S. Turitsyn, Ann Margareth Rosa Brusin, Uiara Celine de Moura","doi":"10.1051/jeos/2022016","DOIUrl":"https://doi.org/10.1051/jeos/2022016","url":null,"abstract":"Bismuth-doped fiber amplifiers offer an attractive solution for meeting continuously growing enormous demand on the bandwidth of modern communication systems. However, practical deployment of such amplifiers require massive development and optimization efforts with the numerical modeling being the core design tool. The numerical optimization of bismuth-doped fiber amplifiers is challenging due to a large number of unknown parameters in the conventional rate equations models. We propose here a new approach to develop a bismuth-doped fiber amplifier model based on a neural network purely trained with experimental data sets in E- and S-bands. This method allows a robust prediction of the amplifier operation that incorporates variations of fiber properties due to manufacturing process and any fluctuations of the amplifier characteristics.\u0000Using the proposed approach the spectral dependencies of gain and noise figure for given bi-directional pump currents and input signal powers have been obtained. The low mean (less than 0.19 dB) and standard deviation (less than 0.09 dB) of the maximum error are achieved for gain and noise figure predictions in the 1410-1490 nm spectral band.","PeriodicalId":674,"journal":{"name":"Journal of the European Optical Society-Rapid Publications","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47304832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yan Shen, Qingjun Li, Jing Ding, Guoyang Wang, Fengxuan Zhang, Bo Su, Cunling Zhang
Most biomolecules require an aqueous environment to fully exert their biological activity. However, the rotation mode, vibration mode, and energy associated with the hydrogen bonding network of water are in the terahertz band, resulting in strong absorption. Therefore, it is difficult to detect liquid biological samples using the terahertz technology. Here, a high-transmittance double-layer microfluidic chip was prepared using a cycloolefin copolymer material with high transmittance of terahertz waves. Combined with terahertz time-domain spectroscopy, the terahertz spectral characteristics of deionized water, NaCl, NaCO3, and CH3COONa solutions were studied. The changes in the terahertz transmission intensity of these electrolyte solutions under constant electric and magnetic fields were measured. The results show that the terahertz spectra of different sodium salt solutions with the same concentration of 0.9 mol/l are different. Furthermore, the terahertz absorption coefficients of the different electrolyte solutions gradually decrease with the increase of their residence time under the electric field, which is contrary to the results obtained under the external magnetic field. This study provides a new idea for the detection of sodium salt solution and lays a foundation for the development of THz technology.
{"title":"Terahertz spectra of electrolyte solutions under applied electric and magnetic fields","authors":"Yan Shen, Qingjun Li, Jing Ding, Guoyang Wang, Fengxuan Zhang, Bo Su, Cunling Zhang","doi":"10.1051/jeos/2022013","DOIUrl":"https://doi.org/10.1051/jeos/2022013","url":null,"abstract":"Most biomolecules require an aqueous environment to fully exert their biological activity. However, the rotation mode, vibration mode, and energy associated with the hydrogen bonding network of water are in the terahertz band, resulting in strong absorption. Therefore, it is difficult to detect liquid biological samples using the terahertz technology. Here, a high-transmittance double-layer microfluidic chip was prepared using a cycloolefin copolymer material with high transmittance of terahertz waves. Combined with terahertz time-domain spectroscopy, the terahertz spectral characteristics of deionized water, NaCl, NaCO3, and CH3COONa solutions were studied. The changes in the terahertz transmission intensity of these electrolyte solutions under constant electric and magnetic fields were measured. The results show that the terahertz spectra of different sodium salt solutions with the same concentration of 0.9 mol/l are different. Furthermore, the terahertz absorption coefficients of the different electrolyte solutions gradually decrease with the increase of their residence time under the electric field, which is contrary to the results obtained under the external magnetic field. This study provides a new idea for the detection of sodium salt solution and lays a foundation for the development of THz technology.","PeriodicalId":674,"journal":{"name":"Journal of the European Optical Society-Rapid Publications","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43710529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jyrki Laatikainen, A. Friberg, O. Korotkova, T. Setälä
The so-called coherence Poincare sphere was recently introduced for geometrical visualization of the state of two-point spatial coherence of a random electromagnetic beam. The formalism and its interpretation strongly utilized a specific decomposition of the Gram matrix of the cross-spectral density (CSD) matrix. In this work, we show that the interpretation of the coherence Poincare sphere is obtained exclusively and straightforwardly via the singular value decomposition of the CSD matrix.
{"title":"Singular value representation of the coherence Poincaré sphere","authors":"Jyrki Laatikainen, A. Friberg, O. Korotkova, T. Setälä","doi":"10.1051/jeos/2022012","DOIUrl":"https://doi.org/10.1051/jeos/2022012","url":null,"abstract":"The so-called coherence Poincare sphere was recently introduced for geometrical visualization of \u0000the state of two-point spatial coherence of a random electromagnetic beam. The formalism and its interpretation strongly utilized a specific decomposition of the Gram matrix of the cross-spectral density (CSD) matrix. In this work, we show that the interpretation of the coherence Poincare sphere is obtained exclusively and straightforwardly via the singular value decomposition of the CSD matrix.","PeriodicalId":674,"journal":{"name":"Journal of the European Optical Society-Rapid Publications","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45665556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. Novikova, Myeongseop Kim, Hee Ryung Lee, R. Ossikovski, Aude Malfait-Jobart, D. Lamarque
We investigate a possibility of producing the quantitative optical metrics to characterize the evolution of gastric tissue from healthy conditions via inflammation to cancer by using Mueller microscopy of gastric biopsies, regression model and statistical analysis of the predicted images. For this purpose the unstained sections of human gastric tissue biopsies at different pathological conditions were measured with the custom-built Mueller microscope. Polynomial regression model was built using the maps of transmitted intensity, retardance, dichroism and depolarization to generate the predicted images. The statistical analysis of predicted images of gastric tissue sections with multi-curve fit suggests that Mueller microscopy combined with data regression and statistical analysis is an effective approach for quantitative assessment of the degree of inflammation in gastric tissue biopsies with a high potential in clinical applications.
{"title":"Optical diagnosis of gastric tissue biopsies with Mueller microscopy and statistical analysis","authors":"T. Novikova, Myeongseop Kim, Hee Ryung Lee, R. Ossikovski, Aude Malfait-Jobart, D. Lamarque","doi":"10.1051/jeos/2022011","DOIUrl":"https://doi.org/10.1051/jeos/2022011","url":null,"abstract":"We investigate a possibility of producing the quantitative optical metrics to characterize the evolution of gastric tissue from healthy conditions via inflammation to cancer by using Mueller microscopy of gastric biopsies, regression model and statistical analysis of the predicted images. For this purpose the unstained sections of human gastric tissue biopsies at different pathological conditions were measured with the custom-built Mueller microscope. Polynomial regression model was built using the maps of transmitted intensity, retardance, dichroism and depolarization to generate the predicted images. The statistical analysis of predicted images of gastric tissue sections with multi-curve fit suggests that Mueller microscopy combined with data regression and statistical analysis is an effective approach for quantitative assessment of the degree of inflammation in gastric tissue biopsies with a high potential in clinical applications.","PeriodicalId":674,"journal":{"name":"Journal of the European Optical Society-Rapid Publications","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48157702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. van As, Bram A. Simons, C. Kleijn, S. Kenjereš, N. Bhattacharya
We study how the speckle contrast depends on scatterer velocity, with the goal of further developing laser speckle imaging as a quantitative measurement technique. To that end, we perform interferometric computer simulations on a dilute plug flow. The results of our numerical experiment, that we compare with known analytical expressions to confirm their veracity, match well at low velocities with the Gaussian expression. Finally, we address the issue of how velocity depends on speckle decorrelation time, and show that the speckle size is most likely the relevant connecting length scale.
{"title":"The Dependence of Speckle Contrast on Velocity","authors":"K. van As, Bram A. Simons, C. Kleijn, S. Kenjereš, N. Bhattacharya","doi":"10.1051/jeos/2022010","DOIUrl":"https://doi.org/10.1051/jeos/2022010","url":null,"abstract":"We study how the speckle contrast depends on scatterer velocity, with the goal of further developing laser speckle imaging as a quantitative measurement technique. To that end, we perform interferometric computer simulations on a dilute plug flow. The results of our numerical experiment, that we compare with known analytical expressions to confirm their veracity, match well at low velocities with the Gaussian expression. Finally, we address the issue of how velocity depends on speckle decorrelation time, and show that the speckle size is most likely the relevant connecting length scale.","PeriodicalId":674,"journal":{"name":"Journal of the European Optical Society-Rapid Publications","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43256574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. Bolognini, L. Rossi, F. Bastianini, F. Falcetelli, R. Di Sante, P. Bocheński
Two innovative optical fiber cable layouts designed to improve strain measurement accuracy for Brillouin Optical Time Domain Analysis (BOTDA) sensors through improved strain transfer efficiency are presented and discussed. Swept Wavelength Interferometry (SWI) is used to experimentally evaluate their performance alongside analytical models and numerical simulation through Finite Element Method (FEM). The results show good agreement between the different methods and show that the second sensing cable design presents good features to minimize the mismatch between measured and actual strain. Finally, the strain response of both strain and temperature sensing cables of this design are evaluated, showing that their difference in response is reliable enough to allow temperature compensation.
{"title":"Optical characterization of strain sensing cables for Brillouin optical time domain analysis","authors":"G. Bolognini, L. Rossi, F. Bastianini, F. Falcetelli, R. Di Sante, P. Bocheński","doi":"10.1051/jeos/2022007","DOIUrl":"https://doi.org/10.1051/jeos/2022007","url":null,"abstract":"Two innovative optical fiber cable layouts designed to improve strain measurement accuracy for Brillouin Optical Time Domain Analysis (BOTDA) sensors through improved strain transfer efficiency are presented and discussed. Swept Wavelength Interferometry (SWI) is used to experimentally evaluate their performance alongside analytical models and numerical simulation through Finite Element Method (FEM). The results show good agreement between the different methods and show that the second sensing cable design presents good features to minimize the mismatch between measured and actual strain. Finally, the strain response of both strain and temperature sensing cables of this design are evaluated, showing that their difference in response is reliable enough to allow temperature compensation.","PeriodicalId":674,"journal":{"name":"Journal of the European Optical Society-Rapid Publications","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46748103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The objective of this study is to investigate miscellaneous wave structures for perturbed Fokas–Lenells equation (FLE) with cubic-quartic dispersion in polarization-preserving fibers. Based on the improved projective Riccati equations method, various types of soliton solutions such as bright soliton, combo dark–bright soliton, singular soliton and combo singular soliton are constructed. Additionally, a set of periodic singular waves are also retrieved. The dynamical behaviors of some obtained solutions are depicted to provide a key to understanding the physics of the model. The modulation instability of the FLE is reported by employing the linear stability analysis which shows that all solutions are stable.
{"title":"Cubic–quartic optical soliton perturbation and modulation stability analysis in polarization-controlled fibers for Fokas-Lenells equation","authors":"K. Al-Ghafri, E. Krishnan, A. Biswas","doi":"10.1051/jeos/2022008","DOIUrl":"https://doi.org/10.1051/jeos/2022008","url":null,"abstract":"The objective of this study is to investigate miscellaneous wave structures for perturbed Fokas–Lenells equation (FLE) with cubic-quartic dispersion in polarization-preserving fibers. Based on the improved projective Riccati equations method, various types of soliton solutions such as bright soliton, combo dark–bright soliton, singular soliton and combo singular soliton are constructed. Additionally, a set of periodic singular waves are also retrieved. The dynamical behaviors of some obtained solutions are depicted to provide a key to understanding the physics of the model. The modulation instability of the FLE is reported by employing the linear stability analysis which shows that all solutions are stable.","PeriodicalId":674,"journal":{"name":"Journal of the European Optical Society-Rapid Publications","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44557526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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