Pub Date : 2023-07-30DOI: 10.1109/OMN/SBFotonIOPC58971.2023.10230955
Ricardo E. Da Siva, Marcos A. R. Franco
Acousto-optic modulation of an antiresonant hollow core optical fiber employing flexural acoustic waves is numerically investigated for the first time. Acoustically induced attenuation of propagating core optical modes is simulated with the finite element method. The fiber's transmission spectrum is tuned by the acoustic amplitude and frequency, indicating an efficient possibility to Q-switch high power fiber lasers in the range of 1030 – 1090 nm.
{"title":"Spectral Modulation of Antiresonant Hollow Core Optical Fiber with Flexural Acoustic Waves","authors":"Ricardo E. Da Siva, Marcos A. R. Franco","doi":"10.1109/OMN/SBFotonIOPC58971.2023.10230955","DOIUrl":"https://doi.org/10.1109/OMN/SBFotonIOPC58971.2023.10230955","url":null,"abstract":"Acousto-optic modulation of an antiresonant hollow core optical fiber employing flexural acoustic waves is numerically investigated for the first time. Acoustically induced attenuation of propagating core optical modes is simulated with the finite element method. The fiber's transmission spectrum is tuned by the acoustic amplitude and frequency, indicating an efficient possibility to Q-switch high power fiber lasers in the range of 1030 – 1090 nm.","PeriodicalId":31141,"journal":{"name":"Netcom","volume":"322 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2023-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80282307","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 : 2023-07-30DOI: 10.1109/OMN/SBFotonIOPC58971.2023.10230957
Sajid Farooq, Daniella Lúmara Peres, D. C. Caixeta, Cassio Lima, Robinson Sabino Da Silva, D. Zezell
Here, we aim to better characterize diabetes mellitus (DM) by analyzing 149 urine spectral samples, comprising of diabetes versus healthy control groups employing ATR-FTIR spectroscopy, combined with a 3D discriminant analysis machine learning approach. Our results depict that the model is highly precise with accuracy close to 100%.
{"title":"Monitoring Changes in Urine from Diabetic Rats Using ATR-FTIR and Machine Learning","authors":"Sajid Farooq, Daniella Lúmara Peres, D. C. Caixeta, Cassio Lima, Robinson Sabino Da Silva, D. Zezell","doi":"10.1109/OMN/SBFotonIOPC58971.2023.10230957","DOIUrl":"https://doi.org/10.1109/OMN/SBFotonIOPC58971.2023.10230957","url":null,"abstract":"Here, we aim to better characterize diabetes mellitus (DM) by analyzing 149 urine spectral samples, comprising of diabetes versus healthy control groups employing ATR-FTIR spectroscopy, combined with a 3D discriminant analysis machine learning approach. Our results depict that the model is highly precise with accuracy close to 100%.","PeriodicalId":31141,"journal":{"name":"Netcom","volume":"16 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2023-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88863658","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 : 2023-07-30DOI: 10.1109/OMN/SBFotonIOPC58971.2023.10230967
L. G. M. Riveros, Carine Mineto, F. Simões, T. Sutili, R. Figueiredo, E. Conforti
The channel allocation in a long-haul C+l optical link supported by a parallel EDFA-based amplification subsystem is comparatively analyzed for 80 channels allocated on C, L, or C+ L optical band. The achieved results indicate gains on employing a less dense channel grid fully occupying the C+ L band, resulting in a reduction of linear and nonlinear impairments.
{"title":"Channel Allocation Analysis for EDFA-based C+L Optical Systems","authors":"L. G. M. Riveros, Carine Mineto, F. Simões, T. Sutili, R. Figueiredo, E. Conforti","doi":"10.1109/OMN/SBFotonIOPC58971.2023.10230967","DOIUrl":"https://doi.org/10.1109/OMN/SBFotonIOPC58971.2023.10230967","url":null,"abstract":"The channel allocation in a long-haul C+l optical link supported by a parallel EDFA-based amplification subsystem is comparatively analyzed for 80 channels allocated on C, L, or C+ L optical band. The achieved results indicate gains on employing a less dense channel grid fully occupying the C+ L band, resulting in a reduction of linear and nonlinear impairments.","PeriodicalId":31141,"journal":{"name":"Netcom","volume":"46 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2023-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87060939","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 : 2023-07-30DOI: 10.1109/OMN/SBFotonIOPC58971.2023.10230984
William O. F. Carvalho, J. Mejía-Salazar, D. Spadoti
This work presents a magneto-optical (MO) meta-grating for beamforming at $f=300$ GHz. The device comprises a periodic arrangement of aluminum and indium antimonide semiconductor. Numerical results show diffraction angles of $pm 45^{circ}$, with transmittance and extinction ratios of 0.54 and 0.74, respectively. Results are promising for future dynamic THz communications.
{"title":"Efficient Beamforming Using Magneto-Optical Metagratings for Terahertz Communications","authors":"William O. F. Carvalho, J. Mejía-Salazar, D. Spadoti","doi":"10.1109/OMN/SBFotonIOPC58971.2023.10230984","DOIUrl":"https://doi.org/10.1109/OMN/SBFotonIOPC58971.2023.10230984","url":null,"abstract":"This work presents a magneto-optical (MO) meta-grating for beamforming at $f=300$ GHz. The device comprises a periodic arrangement of aluminum and indium antimonide semiconductor. Numerical results show diffraction angles of $pm 45^{circ}$, with transmittance and extinction ratios of 0.54 and 0.74, respectively. Results are promising for future dynamic THz communications.","PeriodicalId":31141,"journal":{"name":"Netcom","volume":"53 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2023-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79249080","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 : 2023-07-30DOI: 10.1109/OMN/SBFotonIOPC58971.2023.10230927
Giovanni Budroni Netto, Jonathas de Paula Siqueira, Flavio Caldas Da Cruz
Terahertz time-domain spectroscopy was per-formed on samples of the iron oxides alpha-hematite and magnetite. We were able to obtain the complex refractive index and dielectric constants. For alpha-hematite, an AFM resonance was observed at 0.13 THz. Although we did not find any resonance for magnetite, it was possible to observe spectral changes by decreasing the temperature. This suggests that TDS-THz may be a useful tool to detect corrosion on iron materials.
{"title":"A Study of the Properties of Iron Oxides ($alpha - Fe_{2}O_{3}$ and $Fe_{3}O_{4}$) Through Time Domain Spectroscopy in the Terahertz Range","authors":"Giovanni Budroni Netto, Jonathas de Paula Siqueira, Flavio Caldas Da Cruz","doi":"10.1109/OMN/SBFotonIOPC58971.2023.10230927","DOIUrl":"https://doi.org/10.1109/OMN/SBFotonIOPC58971.2023.10230927","url":null,"abstract":"Terahertz time-domain spectroscopy was per-formed on samples of the iron oxides alpha-hematite and magnetite. We were able to obtain the complex refractive index and dielectric constants. For alpha-hematite, an AFM resonance was observed at 0.13 THz. Although we did not find any resonance for magnetite, it was possible to observe spectral changes by decreasing the temperature. This suggests that TDS-THz may be a useful tool to detect corrosion on iron materials.","PeriodicalId":31141,"journal":{"name":"Netcom","volume":"44 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2023-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79292159","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 : 2023-07-30DOI: 10.1109/OMN/SBFotonIOPC58971.2023.10230932
C. Lopes, Letícia C. Souza, T. P. V. Andrade, E. Conforti, A. S.
This paper reports the implementation of 5G New Radio (5G-NR) optical fronthauls based on radio-over-fiber (RoF) technology and optical carrier-suppressed double sideband (CSDSB) technique, operating at 60 GHz. Experimental results over 20-km fiber-optics links demonstrate the successful transmission of QPSK, 16-QAM and 64-QAM modulated signals with up to 400-MHz bandwidth. The proposed 5G-NR RoF system performance meets the 3rd Generation Partnership Project (3GPP) requirements, achieving a total throughput of 800 Mbps.
{"title":"60-GHz 5G-NR Optical Fronthauls Based on CS-DSB Technique","authors":"C. Lopes, Letícia C. Souza, T. P. V. Andrade, E. Conforti, A. S.","doi":"10.1109/OMN/SBFotonIOPC58971.2023.10230932","DOIUrl":"https://doi.org/10.1109/OMN/SBFotonIOPC58971.2023.10230932","url":null,"abstract":"This paper reports the implementation of 5G New Radio (5G-NR) optical fronthauls based on radio-over-fiber (RoF) technology and optical carrier-suppressed double sideband (CSDSB) technique, operating at 60 GHz. Experimental results over 20-km fiber-optics links demonstrate the successful transmission of QPSK, 16-QAM and 64-QAM modulated signals with up to 400-MHz bandwidth. The proposed 5G-NR RoF system performance meets the 3rd Generation Partnership Project (3GPP) requirements, achieving a total throughput of 800 Mbps.","PeriodicalId":31141,"journal":{"name":"Netcom","volume":"76 1","pages":"01-02"},"PeriodicalIF":0.0,"publicationDate":"2023-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79480712","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 : 2023-07-30DOI: 10.1109/OMN/SBFotonIOPC58971.2023.10230974
Guilherme Machado, Cristiano M. B. Cordeiro, Rodrigo M. Gerosa, F. Amrani, F. Gérôme, F. Benabid, J. Osório
We report on post-processing experiments using hollow-core photonic crystal fibers. We show that, by simultaneously heating and internally pressurizing the fibers, we can taper or modify the sizes of the fiber microstructure features. Particularly, by employing a technique for selectively obstructing the microstructure elements, we could attain tailored modifications of the fiber architecture, namely the inflation of selected cladding tubes, which can be of interest for the development of new devices and sensors.
{"title":"Post-Processing of Hollow-Core Photonic Crystal Fibers: Selective Hole Inflation and Tapering","authors":"Guilherme Machado, Cristiano M. B. Cordeiro, Rodrigo M. Gerosa, F. Amrani, F. Gérôme, F. Benabid, J. Osório","doi":"10.1109/OMN/SBFotonIOPC58971.2023.10230974","DOIUrl":"https://doi.org/10.1109/OMN/SBFotonIOPC58971.2023.10230974","url":null,"abstract":"We report on post-processing experiments using hollow-core photonic crystal fibers. We show that, by simultaneously heating and internally pressurizing the fibers, we can taper or modify the sizes of the fiber microstructure features. Particularly, by employing a technique for selectively obstructing the microstructure elements, we could attain tailored modifications of the fiber architecture, namely the inflation of selected cladding tubes, which can be of interest for the development of new devices and sensors.","PeriodicalId":31141,"journal":{"name":"Netcom","volume":"40 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2023-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88455792","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 : 2023-07-30DOI: 10.1109/OMN/SBFotonIOPC58971.2023.10230949
Juliana de Novais Schianti, Rômulo Ferreira Santos, S. Rondineau, Daniel Orquiza De Carvalho
The purpose of this work is to offer a low cost and noninvasive set up aimed at measuring droplet dimensions in real time. The system is composed of an acrylic microfluidic device coupled to a perpendicularly positioned optical fiber, a laser diode light source and a photodetector. This optofluidic system is capable of producing droplets with sizes varying from 250 up to 400 μm, by changing the inlets flow rates. FEM modeling was introduced in order to understand the transmittance pattern observed while the droplets crossed the optical path.
{"title":"Perpendicular Optofluidic Setup for Real Time Droplet Size Measurements","authors":"Juliana de Novais Schianti, Rômulo Ferreira Santos, S. Rondineau, Daniel Orquiza De Carvalho","doi":"10.1109/OMN/SBFotonIOPC58971.2023.10230949","DOIUrl":"https://doi.org/10.1109/OMN/SBFotonIOPC58971.2023.10230949","url":null,"abstract":"The purpose of this work is to offer a low cost and noninvasive set up aimed at measuring droplet dimensions in real time. The system is composed of an acrylic microfluidic device coupled to a perpendicularly positioned optical fiber, a laser diode light source and a photodetector. This optofluidic system is capable of producing droplets with sizes varying from 250 up to 400 μm, by changing the inlets flow rates. FEM modeling was introduced in order to understand the transmittance pattern observed while the droplets crossed the optical path.","PeriodicalId":31141,"journal":{"name":"Netcom","volume":"19 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2023-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75622201","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 : 2023-07-30DOI: 10.1109/OMN/SBFotonIOPC58971.2023.10230945
Daniella Lúmara Peres, Sajid Farooq, Rocío Raffaeli, M. Croce, Adela E. Croce, D. Zezell
Here we applied ATR-FTIR spectroscopy combined with computational modeling based on 3D-discriminant analysis (3D-PCA-QDA). Our results present an exceptional performance of 3D-discriminant algorithms to diagnose BCC skin cancer, indicating the accuracy up to 99%.
{"title":"Identification of Basal Cell Carcinoma Skin Cancer using FTIR and Machine Learning","authors":"Daniella Lúmara Peres, Sajid Farooq, Rocío Raffaeli, M. Croce, Adela E. Croce, D. Zezell","doi":"10.1109/OMN/SBFotonIOPC58971.2023.10230945","DOIUrl":"https://doi.org/10.1109/OMN/SBFotonIOPC58971.2023.10230945","url":null,"abstract":"Here we applied ATR-FTIR spectroscopy combined with computational modeling based on 3D-discriminant analysis (3D-PCA-QDA). Our results present an exceptional performance of 3D-discriminant algorithms to diagnose BCC skin cancer, indicating the accuracy up to 99%.","PeriodicalId":31141,"journal":{"name":"Netcom","volume":"33 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2023-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73727564","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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