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Optical Fibers and Their Applications最新文献

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Features of image analysis under UV-video dermoscopy 紫外视频皮肤镜下图像分析的特点
Optical Fibers and Their Applications Pub Date : 2020-06-12 DOI: 10.1117/12.2569774
Olha Isaieva, Oleg Avrunin, Irina I. Moroz, O. Stoliarenko, R. Akselrod, Volodymyr S. Kylyvnyk, K. Gromaszek, A. Iskakova, S. Rakhmetullina, A. Kozbakova
{"title":"Features of image analysis under UV-video dermoscopy","authors":"Olha Isaieva, Oleg Avrunin, Irina I. Moroz, O. Stoliarenko, R. Akselrod, Volodymyr S. Kylyvnyk, K. Gromaszek, A. Iskakova, S. Rakhmetullina, A. Kozbakova","doi":"10.1117/12.2569774","DOIUrl":"https://doi.org/10.1117/12.2569774","url":null,"abstract":"The work is devoted to the modern method of diagnosing skin diseases - video dermoscopy in the ultraviolet spectrum. The main features of the method are considered. The features of image processing and analysis for HC-video dermatoscopy are proposed for consideration. The main stages of processing HC-video dermoscopic images are considered. The main emphasis is placed on the methods of automated segmentation of HC-videodermoscopic images and the analysis of the errors that arise in this case. The stages of preliminary and post-processing of UVvideodermoscopic images are examined in detail. The main aspects of the automated analysis of dermoscopic image processing and the prospects of using such systems in medical practice are considered.","PeriodicalId":299297,"journal":{"name":"Optical Fibers and Their Applications","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116445721","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}
引用次数: 5
Research of the ellipsoid area geometry illuminated by a point laser source 点激光照射椭球面几何形状的研究
Optical Fibers and Their Applications Pub Date : 2020-06-12 DOI: 10.1117/12.2569781
Dmytro Міlеnіn, M. Lysychenko, O. Pankova, N. Titova, Olena Teplova, A. Kotyra, B. Imanbek, S. Smailova, D. Baitussupov
{"title":"Research of the ellipsoid area geometry illuminated by a point laser source","authors":"Dmytro Міlеnіn, M. Lysychenko, O. Pankova, N. Titova, Olena Teplova, A. Kotyra, B. Imanbek, S. Smailova, D. Baitussupov","doi":"10.1117/12.2569781","DOIUrl":"https://doi.org/10.1117/12.2569781","url":null,"abstract":"The current state of poultry farming requires the development and application of modern technologies for daily young fledge. Young fledge of high quality guarantees the maximum profit of the production in case of its further growth. It is known that to obtain a healthy, high-immunity young fledge it is necessary to implement an effective process of the eggshell surface disinfection. Therefore, the search and development of highly efficient hatching egg disinfection technologies is an urgent task.","PeriodicalId":299297,"journal":{"name":"Optical Fibers and Their Applications","volume":"277 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132974227","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}
引用次数: 1
Femtosecond pulse delivery around 1560 nm in large-core anti-resonant fibers 在大芯抗谐振光纤中约1560nm的飞秒脉冲传输
Optical Fibers and Their Applications Pub Date : 2020-06-12 DOI: 10.1117/12.2565964
Dominik Dobrakowski, Anupamaa Rampur, G. Stępniewski, D. Pysz, Luming Zhao, Y. Stepanenko, R. Buczyński, M. Klimczak
{"title":"Femtosecond pulse delivery around 1560 nm in large-core anti-resonant fibers","authors":"Dominik Dobrakowski, Anupamaa Rampur, G. Stępniewski, D. Pysz, Luming Zhao, Y. Stepanenko, R. Buczyński, M. Klimczak","doi":"10.1117/12.2565964","DOIUrl":"https://doi.org/10.1117/12.2565964","url":null,"abstract":"Hollow core, anti-resonant fiber with 65 μm core diameter is used for transmission of ultrashort laser pulses under 100 fs at a central wavelength of 1560 nm from a mode-locked laser. Meter-scale lengths of the fiber (up to 3 m) and bend radii down to 6 cm are considered. Cross-correlation frequency-resolved optical gating is used for investigation of performance of the fiber in this application. Achieved results on dispersive stretching of the pulse up to around 200 fs are compared with nonlinear propagation simulations, performed using the generalized nonlinear Schrödinger equation parametrized with measured characteristics of the fiber. Dechirping of the pulse to its original shape in the fiber under bending is observed and related to suppression of higher-order modes. As shown, the proposed fiber can be used to transmit sub-100 fs long laser pulses without spectral or temporal distortions providing a 6 cm radius loop.","PeriodicalId":299297,"journal":{"name":"Optical Fibers and Their Applications","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127899860","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}
引用次数: 0
Relationship between the technique of integral equation and Kirchhoff approximation in scalar diffraction theory 标量衍射理论中积分方程技术与Kirchhoff近似的关系
Optical Fibers and Their Applications Pub Date : 2020-06-12 DOI: 10.1117/12.2569787
Grygorij S. Tymchik, M. Filippova, O. S. Bezverkhyi, W. Wójcik, B. Yeraliyeva, A. Kalizhanova, K. Nurseitova
{"title":"Relationship between the technique of integral equation and Kirchhoff approximation in scalar diffraction theory","authors":"Grygorij S. Tymchik, M. Filippova, O. S. Bezverkhyi, W. Wójcik, B. Yeraliyeva, A. Kalizhanova, K. Nurseitova","doi":"10.1117/12.2569787","DOIUrl":"https://doi.org/10.1117/12.2569787","url":null,"abstract":"This paper investigates the relationship between the integral equation and Kirchhoff approximation in the diffraction theory of coherent radiance. The spectrum of the reflected wave is formed in the far field (Fraunhofer zone) and the solution is to Fourier transform of effective reflectance coefficient of a surface. In the paper, the analytical relationship between the method of solving an integral equation and the Kirchhoff approximation has been proven. It helps to define the structure of the field of diffracted waves in a Fraunhofer zone for coherent scattered light. The analytical equations for calculation of the average value of intensity scattering field and the mirror reflection coefficient of a rough surface have been obtained. Analysis of the components of the scattering coherent light coming from a metal surface has been improved. It helps to specify the data processing algorithms for evaluation of statistical characteristics of rough surfaces.","PeriodicalId":299297,"journal":{"name":"Optical Fibers and Their Applications","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126492990","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}
引用次数: 0
Optical parameters of (Ga0.4In0.6)2Se3 thin film (Ga0.4In0.6)2Se3薄膜的光学参数
Optical Fibers and Their Applications Pub Date : 2020-06-12 DOI: 10.1117/12.2569782
I. Studenyak, M. Kranjčec, M. Pop, V. Studenyak, L. Suslikov, Olga Yu. Pinaeva, P. Komada, S. Luganskaya, M. Kozhamberdiyeva, A. Mussabekova
{"title":"Optical parameters of (Ga0.4In0.6)2Se3 thin film","authors":"I. Studenyak, M. Kranjčec, M. Pop, V. Studenyak, L. Suslikov, Olga Yu. Pinaeva, P. Komada, S. Luganskaya, M. Kozhamberdiyeva, A. Mussabekova","doi":"10.1117/12.2569782","DOIUrl":"https://doi.org/10.1117/12.2569782","url":null,"abstract":"(Ga0.4In0.6)2Se3 thin films were deposited by thermal evaporation technique. Refractive index and extinction coefficient dispersions were obtained from the spectral ellipsometry measurements. The dispersion of refractive index is described in the framework of Wemple-DiDomenico model. The energy pseudogap and Urbach energy were determined from the optical absorption spectrum of (Ga0.4In0.6)2Se3 thin film. Optical parameters of (Ga0.4In0.6)2Se3 thin film and single crystal were compared.","PeriodicalId":299297,"journal":{"name":"Optical Fibers and Their Applications","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126243102","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}
引用次数: 2
Design of multi-order diffractive intraocular lenses 多级衍射人工晶体的设计
Optical Fibers and Their Applications Pub Date : 2020-06-12 DOI: 10.1117/12.2569784
V. Kolobrodov, Inna O. Vasylkovska, G. S. Tymchyk, Nelia I. Burlaka, A. Smolarz, Y. Amirgaliyev, Y. Turgynbekov, A. Oralbekova
{"title":"Design of multi-order diffractive intraocular lenses","authors":"V. Kolobrodov, Inna O. Vasylkovska, G. S. Tymchyk, Nelia I. Burlaka, A. Smolarz, Y. Amirgaliyev, Y. Turgynbekov, A. Oralbekova","doi":"10.1117/12.2569784","DOIUrl":"https://doi.org/10.1117/12.2569784","url":null,"abstract":"The paper deals with a design method of multi-order diffractive intraocular lenses (IOL) that we have developed in order to correct chromatic aberration. It is shown that in order to prevent a color halo around the focused image the phasematching number is selected to attend at each point of the image three color components to get quality image. A computer simulation of multi-order diffractive lens (MODL) in a schematic model of the human eye was carried out. The calculated MODL focuses white light into a segment on an optical axis with high diffractive efficiency. More research needed to study an aberration analysis of lenses of this type.","PeriodicalId":299297,"journal":{"name":"Optical Fibers and Their Applications","volume":"11456 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129889430","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}
引用次数: 0
Transport of Rel-15/16 waveform radio signals over optical 5G fronthaul path 在光5G前传路径上传输Rel-15/16波形无线电信号
Optical Fibers and Their Applications Pub Date : 2020-06-12 DOI: 10.1117/12.2566059
Zbigniew Zakrzewski
{"title":"Transport of Rel-15/16 waveform radio signals over optical 5G fronthaul path","authors":"Zbigniew Zakrzewski","doi":"10.1117/12.2566059","DOIUrl":"https://doi.org/10.1117/12.2566059","url":null,"abstract":"The paper presents basics of the C-RAN network architecture, based on fiber-optic networks, for solutions targeted at 5G mobile systems. Service aspects of work the optical fronthaul (FH) and optical midhaul (MH) are presented. Such networks will constitute main component connecting the virtual baseband unit (vBBU) cloud and the physical active antenna (AAU)/ optical remote radio head (O-RRH) nodes. Calculations were made to indicate the impact of optical fiber path/link delay parameters on the functioning of a interface using D-RoF or A-RoF formats. Simulations of 5GRFoF signal transmission over the fiber-optic FH path up to 20km in length were carried out. During the simulation, the 5G-NR signal according to Rel-15/16, i.e. CP-OFDM with the maximum number of subcarriers supported by 4096-point DFT/FFT was used in the radio channel. Selected simulation results have been summarized in tabular form and in the form of visualization of the 256-QAM constellation. The summary indicates the need to consider the static parameters of the FH/MH fiber-optic link when synchronizing signals delivered to gNB-DU as a remote AAU/O-RRH group.","PeriodicalId":299297,"journal":{"name":"Optical Fibers and Their Applications","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125452960","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}
引用次数: 2
Laser doppler for diagnosis of changes of microcirculation in the perioperal period in patients with acute adhesive obstruction of small gut 激光多普勒诊断急性小肠粘连梗阻围手术期微循环变化
Optical Fibers and Their Applications Pub Date : 2020-06-12 DOI: 10.1117/12.2569779
Roman М. Gorbatiuk, V. Bukata, I. Volch, Svitlana Z. Khrabra, O. Kobylianskyi, O. Stoliarenko, P. Komada, A. Tungatarova, G. Yerkeldessova, Aimurat Burlibayev
{"title":"Laser doppler for diagnosis of changes of microcirculation in the perioperal period in patients with acute adhesive obstruction of small gut","authors":"Roman М. Gorbatiuk, V. Bukata, I. Volch, Svitlana Z. Khrabra, O. Kobylianskyi, O. Stoliarenko, P. Komada, A. Tungatarova, G. Yerkeldessova, Aimurat Burlibayev","doi":"10.1117/12.2569779","DOIUrl":"https://doi.org/10.1117/12.2569779","url":null,"abstract":"The article deals with changes in the amplitude-frequency spectrum of blood flow fluctuations in the perioperative period in patients with adhesive intestinal obstruction using computer diagnostics. To study the state of the microcirculatory bed and the mechanisms of its regulation, laser Doppler flowmetry was performed. Available results indicate significant changes at the level of the microcirculation system. Violation of blood circulation of tissues and decrease in body temperature at the end of surgery leads to hypoxia of organs and systems of the body, their dysfunction, and subsequently, insufficient functioning of the parenchymal organs and the development of complications.","PeriodicalId":299297,"journal":{"name":"Optical Fibers and Their Applications","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125942777","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}
引用次数: 1
Optical-frequency gas flow meter on the basis of transistor structures with negative differential resistance 基于负差分电阻晶体管结构的光频气体流量计
Optical Fibers and Their Applications Pub Date : 2020-06-12 DOI: 10.1117/12.2569771
A. Osadchuk, V. Osadchuk, I. Osadchuk, N. Titova, Olga Yu. Pinaeva, P. Kisała, S. Rakhmetullina, A. Kalizhanova, Zhanar Azeshova
{"title":"Optical-frequency gas flow meter on the basis of transistor structures with negative differential resistance","authors":"A. Osadchuk, V. Osadchuk, I. Osadchuk, N. Titova, Olga Yu. Pinaeva, P. Kisała, S. Rakhmetullina, A. Kalizhanova, Zhanar Azeshova","doi":"10.1117/12.2569771","DOIUrl":"https://doi.org/10.1117/12.2569771","url":null,"abstract":"The article investigated the optical-frequency gas flow meter based on a transistor structure with negative differential resistance (NDR). A schematic diagram and design of an optical-frequency gas flow transducer that operates in the microwave range (0.85 to 1.5 GHz), which consists of a bipolar and field-effect transistor with a Schottky barrier, is proposed as a photosensitive element using a photoresistor. A mathematical model of an optical-frequency gas flow meter based on a transistor structure with negative differential resistance has been developed, which allows one to obtain the main characteristics of the transducer in a wide frequency range. Theoretically and experimentally, the possibility of controlling both the reactive component and the negative differential resistance from changes in control voltage and power is shown, it extends the functionality of optical transducers and allows linearization of the conversion function within (0.1 - 0.2)%. Experimental studies have shown that the greatest sensitivity and linearity of the conversion function of an opticalfrequency gas flow transducer lies in the range from 3 V to 3.5 V. The sensitivity of the developed optical-frequency gas flow transducer based on a transistor structure with NDR is 146 kHz/liter/hour, and the measurement error is ± 1.5%.","PeriodicalId":299297,"journal":{"name":"Optical Fibers and Their Applications","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126003003","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}
引用次数: 1
Modification of existing methods of visualization of offset face skin structure 对现有偏置面部皮肤结构可视化方法的改进
Optical Fibers and Their Applications Pub Date : 2020-06-12 DOI: 10.1117/12.2569770
Sergey Romanyuk, O. Romanyuk, S. Pavlov, O. Romanyuk, N. Dobrovolska, Liubov М. Kravchenko, S. Tymchyk, A. Smolarz, Olena Kulakova, A. Kalizhanova, Zh. E. Amirgaliyeva
{"title":"Modification of existing methods of visualization of offset face skin structure","authors":"Sergey Romanyuk, O. Romanyuk, S. Pavlov, O. Romanyuk, N. Dobrovolska, Liubov М. Kravchenko, S. Tymchyk, A. Smolarz, Olena Kulakova, A. Kalizhanova, Zh. E. Amirgaliyeva","doi":"10.1117/12.2569770","DOIUrl":"https://doi.org/10.1117/12.2569770","url":null,"abstract":"New modifications of the Cook-Torrance and Ward models are proposed, which differ from the known uses when calculating only one function and smaller degrees of polynomials, which makes it possible to improve the performance of three-dimensional image formation taking into account the offset properties of surfaces.","PeriodicalId":299297,"journal":{"name":"Optical Fibers and Their Applications","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122800246","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}
引用次数: 1
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