Pub Date : 2020-09-09DOI: 10.1109/ICOP49690.2020.9300323
L. Rossi, F. Bastianini, G. Bolognini
We employ a new Brillouin ring laser (BRL) source based on an actively stabilized doubly resonant short cavity layout for Brillouin optical time-domain analysis (BOTDA) sensing. Compared to BRL designs that we have previously demonstrated, it presents improved SNR, narrow spectral linewidth and pump-probe frequency shift values with high temporal stability.
{"title":"Brillouin optical time domain analysis employing a doubly resonant short cavity fiber ring laser with active stabilization","authors":"L. Rossi, F. Bastianini, G. Bolognini","doi":"10.1109/ICOP49690.2020.9300323","DOIUrl":"https://doi.org/10.1109/ICOP49690.2020.9300323","url":null,"abstract":"We employ a new Brillouin ring laser (BRL) source based on an actively stabilized doubly resonant short cavity layout for Brillouin optical time-domain analysis (BOTDA) sensing. Compared to BRL designs that we have previously demonstrated, it presents improved SNR, narrow spectral linewidth and pump-probe frequency shift values with high temporal stability.","PeriodicalId":131383,"journal":{"name":"2020 Italian Conference on Optics and Photonics (ICOP)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131781792","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 : 2020-09-09DOI: 10.1109/icop49690.2020.9300329
{"title":"ICOP 2020 Breaker Page","authors":"","doi":"10.1109/icop49690.2020.9300329","DOIUrl":"https://doi.org/10.1109/icop49690.2020.9300329","url":null,"abstract":"","PeriodicalId":131383,"journal":{"name":"2020 Italian Conference on Optics and Photonics (ICOP)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124071207","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 : 2020-09-09DOI: 10.1109/ICOP49690.2020.9300312
Bruno Miranda, R. Moretta, P. Dardano, I. Rea, C. Forestiere, L. de Stefano
The stability of spherical gold nanoparticles embedded in polyethylene glycol diacrylate (PEGDA) with varying molecular weights is tested. The refractive index of the chosen PEGDA is measured as function of the wavelength and used as a parameter to predict the extinction spectrum of gold nanoparticles embedded in the polymeric matrix. The experimental absorbance spectrum of AuNPs-containing PEGDA hydrogel is measured via a transmission mode optical setup. The designed device can be used as a platform for biosensing applications and offers promising opportunities for real-time and early diagnosis of diseases.
{"title":"Hydrogel-based Nanocomposite Plasmonic Sensors for Biomedical Applications","authors":"Bruno Miranda, R. Moretta, P. Dardano, I. Rea, C. Forestiere, L. de Stefano","doi":"10.1109/ICOP49690.2020.9300312","DOIUrl":"https://doi.org/10.1109/ICOP49690.2020.9300312","url":null,"abstract":"The stability of spherical gold nanoparticles embedded in polyethylene glycol diacrylate (PEGDA) with varying molecular weights is tested. The refractive index of the chosen PEGDA is measured as function of the wavelength and used as a parameter to predict the extinction spectrum of gold nanoparticles embedded in the polymeric matrix. The experimental absorbance spectrum of AuNPs-containing PEGDA hydrogel is measured via a transmission mode optical setup. The designed device can be used as a platform for biosensing applications and offers promising opportunities for real-time and early diagnosis of diseases.","PeriodicalId":131383,"journal":{"name":"2020 Italian Conference on Optics and Photonics (ICOP)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127532282","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 : 2020-09-09DOI: 10.1109/ICOP49690.2020.9300320
G. Ruffato, F. Romanato
A novel type of diffractive optics is presented to perform the multiplication and division of the orbital angular momentum (OAM) of light beams in an efficient and compact way. The technique is based on the combination of circular-sector transformations, engineered to split and map conformally the azimuthal phase gradient of OAM beams onto complementary circular sectors. The optical elements have been fabricated with high-resolution electron-beam lithography and tested on an optical bench in the visible range in order to prove the designed optical operations on OAM beams.
{"title":"Algebra of light: multiplication and division of orbital angular momentum","authors":"G. Ruffato, F. Romanato","doi":"10.1109/ICOP49690.2020.9300320","DOIUrl":"https://doi.org/10.1109/ICOP49690.2020.9300320","url":null,"abstract":"A novel type of diffractive optics is presented to perform the multiplication and division of the orbital angular momentum (OAM) of light beams in an efficient and compact way. The technique is based on the combination of circular-sector transformations, engineered to split and map conformally the azimuthal phase gradient of OAM beams onto complementary circular sectors. The optical elements have been fabricated with high-resolution electron-beam lithography and tested on an optical bench in the visible range in order to prove the designed optical operations on OAM beams.","PeriodicalId":131383,"journal":{"name":"2020 Italian Conference on Optics and Photonics (ICOP)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129998283","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 : 2020-09-09DOI: 10.1109/ICOP49690.2020.9300339
F. Bastianini, P. Bocheński, R. Di Sante, F. Falcetelli, L. Rossi, G. Bolognini
An innovative optical fibre cable designed for Brillouin sensing applications is presented. The stages of the project are discussed, and the cable performance is tested through numerical modelling and experiments.
{"title":"Innovative Cable Design for Distributed Sensing Applications based on Stimulated Brillouin Scattering","authors":"F. Bastianini, P. Bocheński, R. Di Sante, F. Falcetelli, L. Rossi, G. Bolognini","doi":"10.1109/ICOP49690.2020.9300339","DOIUrl":"https://doi.org/10.1109/ICOP49690.2020.9300339","url":null,"abstract":"An innovative optical fibre cable designed for Brillouin sensing applications is presented. The stages of the project are discussed, and the cable performance is tested through numerical modelling and experiments.","PeriodicalId":131383,"journal":{"name":"2020 Italian Conference on Optics and Photonics (ICOP)","volume":"202 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114048716","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 : 2020-09-09DOI: 10.1109/ICOP49690.2020.9300337
A. di Donato, D. Mencarelli, L. Criante, L. Pierantoni, A. Morini, M. Farina
By exploiting a novel quantitative imaging technique based on Synthetic Optical Holography, we describe the dynamic behaviour of optical vortices in a speckle pattern generated by the interference of random scattered waves from the rough surface of a glass substrate. The system combines the advantages of digital holography and low-coherence interferometry to retrieve multiple holograms with sub-nanometric spectral resolution. The collection of multiple images of the complex scattered field allows to provide a statistical characterization of the phase singularities by changing the exciting wavelength.
{"title":"Dynamics of Optical Vortices in Speckle Patterns with Sub-Nanometric Spectral Resolution","authors":"A. di Donato, D. Mencarelli, L. Criante, L. Pierantoni, A. Morini, M. Farina","doi":"10.1109/ICOP49690.2020.9300337","DOIUrl":"https://doi.org/10.1109/ICOP49690.2020.9300337","url":null,"abstract":"By exploiting a novel quantitative imaging technique based on Synthetic Optical Holography, we describe the dynamic behaviour of optical vortices in a speckle pattern generated by the interference of random scattered waves from the rough surface of a glass substrate. The system combines the advantages of digital holography and low-coherence interferometry to retrieve multiple holograms with sub-nanometric spectral resolution. The collection of multiple images of the complex scattered field allows to provide a statistical characterization of the phase singularities by changing the exciting wavelength.","PeriodicalId":131383,"journal":{"name":"2020 Italian Conference on Optics and Photonics (ICOP)","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116039127","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 : 2020-09-09DOI: 10.1109/ICOP49690.2020.9300314
Ali Emre Kaplan, J. V. D. van der Tol, P. Bassi, G. Bellanca
We numerically analyze the etch depth as a design parameter for the realization of integrated polarization independent directional couplers. Through finite-element-method simulations, the coupling coefficients of transverse-electric (TE) and transverse-magnetic (TM) polarizations are investigated according to different etch depth levels in the coupling section of the studied device. By optimizing etching depth, the proposed coupler can perform similarly for both polarizations in broadband. According to simulation results, the minimum difference between the TE and TM coupling coefficients can be kept less than 1% in 100 nm of the wavelength range.
{"title":"Analysis of Etch Depth for Polarization-free Directional Couplers","authors":"Ali Emre Kaplan, J. V. D. van der Tol, P. Bassi, G. Bellanca","doi":"10.1109/ICOP49690.2020.9300314","DOIUrl":"https://doi.org/10.1109/ICOP49690.2020.9300314","url":null,"abstract":"We numerically analyze the etch depth as a design parameter for the realization of integrated polarization independent directional couplers. Through finite-element-method simulations, the coupling coefficients of transverse-electric (TE) and transverse-magnetic (TM) polarizations are investigated according to different etch depth levels in the coupling section of the studied device. By optimizing etching depth, the proposed coupler can perform similarly for both polarizations in broadband. According to simulation results, the minimum difference between the TE and TM coupling coefficients can be kept less than 1% in 100 nm of the wavelength range.","PeriodicalId":131383,"journal":{"name":"2020 Italian Conference on Optics and Photonics (ICOP)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133886579","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 : 2020-09-09DOI: 10.1109/ICOP49690.2020.9300311
F. Matera
The performance of cascaded optical communication systems with in-line semiconductor optical amplifiers is evaluated by means of machine learning approaches based both on a regression model and an artificial neural network.
{"title":"Machine Learning in SOA Optical Communication Systems","authors":"F. Matera","doi":"10.1109/ICOP49690.2020.9300311","DOIUrl":"https://doi.org/10.1109/ICOP49690.2020.9300311","url":null,"abstract":"The performance of cascaded optical communication systems with in-line semiconductor optical amplifiers is evaluated by means of machine learning approaches based both on a regression model and an artificial neural network.","PeriodicalId":131383,"journal":{"name":"2020 Italian Conference on Optics and Photonics (ICOP)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134321226","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 : 2020-09-09DOI: 10.1109/ICOP49690.2020.9300313
F. Giovanardi, F. Bissoli, E. Gilioli, G. Trevisi, M. Mazzer, S. Selleri
The laser scribing is one of the crucial technological steps in the industrial processing of solar cells, while the mechanical scribing is generally used for practical reasons on the laboratory scale. Using a picosecond laser, preliminary results on the scribing of CuInGaSe2 thin film solar cells deposited by the low temperature pulsed electron technique, are reported. The complete comparison between laser- and mechanical-scribing is still in progress, however SEM imaging and EDX analysis confirm the excellent structural and morphological quality of the laser scribed samples.
{"title":"Ultrashort pulse laser scribing of CIGS-based thin film solar cells","authors":"F. Giovanardi, F. Bissoli, E. Gilioli, G. Trevisi, M. Mazzer, S. Selleri","doi":"10.1109/ICOP49690.2020.9300313","DOIUrl":"https://doi.org/10.1109/ICOP49690.2020.9300313","url":null,"abstract":"The laser scribing is one of the crucial technological steps in the industrial processing of solar cells, while the mechanical scribing is generally used for practical reasons on the laboratory scale. Using a picosecond laser, preliminary results on the scribing of CuInGaSe2 thin film solar cells deposited by the low temperature pulsed electron technique, are reported. The complete comparison between laser- and mechanical-scribing is still in progress, however SEM imaging and EDX analysis confirm the excellent structural and morphological quality of the laser scribed samples.","PeriodicalId":131383,"journal":{"name":"2020 Italian Conference on Optics and Photonics (ICOP)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129351612","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 : 2020-09-09DOI: 10.1109/ICOP49690.2020.9300309
E. Ertunc, A. Messa, L. Gilli, G. Cossu, M. Rannello, E. Ciaramella
Here we present the experimental characterization of 1 Mbit/s optical wireless communication system by simulating an intra-CubeSat environment where we exploit the reflections to transmit in the 2U CubeSat. The optical system uses infrared-LEDs, silicon-Avalanche photodiode, digital optical power meter and optical attenuators.
{"title":"Preliminary study on diffuse OWC for intra-CubeSat Communication","authors":"E. Ertunc, A. Messa, L. Gilli, G. Cossu, M. Rannello, E. Ciaramella","doi":"10.1109/ICOP49690.2020.9300309","DOIUrl":"https://doi.org/10.1109/ICOP49690.2020.9300309","url":null,"abstract":"Here we present the experimental characterization of 1 Mbit/s optical wireless communication system by simulating an intra-CubeSat environment where we exploit the reflections to transmit in the 2U CubeSat. The optical system uses infrared-LEDs, silicon-Avalanche photodiode, digital optical power meter and optical attenuators.","PeriodicalId":131383,"journal":{"name":"2020 Italian Conference on Optics and Photonics (ICOP)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128774679","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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