Photonics Letters of Poland最新文献

{"title":"Fiber optic humidity sensor based on silk fibroin interference films","authors":"Z. Opilski, M. Procek, S. Aznar-Cervantes, J. L. Cénis, Xavier Muñoz","doi":"10.4302/plp.v12i2.1018","DOIUrl":"https://doi.org/10.4302/plp.v12i2.1018","url":null,"abstract":"The article presents an inexpensive and simple method of fiber optic interference relative humidity (RH) sensors based on silk fibroin (SF) films. The sensors were made on standard multimode telecommunications optical fibers using dip-coating method and examined using broadband light sources. The measuring stand at which the basic sensor parameters were measured and the measured parameters were presented. Full Text: PDF References Y.-G. Han, \"Relative Humidity Sensors Based on Microfiber Knot Resonators—A Review\", Sensors, 19(23), 5196 (2019) CrossRef L.D. Koh, Y. Cheng, C. P. Teng, Y. W. Khin, X. J. Loh, S. Y. Tee, et al., \"Structures, mechanical properties and applications of silk fibroin materials\", Prog. Polim. Sci. 46, 86-110 (2015) CrossRef H. Tao, D. L. Kaplan, F. G. Omenetto, \"Silk Materials – A Road to Sustainable High Technology\", Adv. Mater., 24, 2824-2837 (2012), CrossRef Q. Li, N. Qi, Y. Peng, Y. Zhang, L. Shi, X. Zhang, et al., \"Sub-micron silk fibroin film with high humidity sensibility through color changing\", RSC Adv. 7(29), 17889-17897 (2017) CrossRef S.K. Hwan, H.C. Sung, B. Roy, S. Kim, Y.H. Ahn, \"Humidity sensing using THz metamaterial with silk protein fibroin\", Opt. Express 26(26), 33575-33581 (2018) CrossRef M. Procek, Z. Opilski, A. M. Maqueda, X. M. Berbel, S. D. Aznar-Cervantes, J. L. Cenis, C. D. Horna, \"Silk fibroin thin films for optical humidity sensing\", Proc. SPIE , 11204, 0277-786X, (2019). CrossRef Y. Luo, Y. Pei, X. Feng, B. Lu, L. Wang, \"Silk fibroin based transparent and wearable humidity sensor for ultra-sensitive respiration monitoring\", Mater. Lett., 260, 126945 (2020) CrossRef E. Maciak, \"Low-Coherence Interferometric Fiber Optic Sensor for Humidity Monitoring Based on Nafion® Thin Film†\", Sensors 19(3), 629 (2019) CrossRef","PeriodicalId":20055,"journal":{"name":"Photonics Letters of Poland","volume":"12 1","pages":"49-51"},"PeriodicalIF":0.6,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43362575","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}

{"title":"Model of the broadband interferometric optical biosensor in a planar configuration","authors":"M. Błahut","doi":"10.4302/plp.v12i2.987","DOIUrl":"https://doi.org/10.4302/plp.v12i2.987","url":null,"abstract":"The paper presents numerical studies of the model of an optical sensor based on interference of modes in planar one-dimensional step-index configuration, excited by a broadband light source from a selected spectral range. The refractive index variation of measured external surrounding affects the modal properties of multimode waveguide and the spectral field distribution at the output of the structure. The optical system described is designed to the analysis of biological substances. Full Text: PDF References M. Blahut, \"Optical sensor in planar configuration based on multimode interference\" Proc. SPIE, 10455, (2017). CrossRef K. Misiakos, et al, \"Broad-band Mach-Zehnder interferometers as high performance refractive index sensors: Theory and monolithic implementation\", Opt. Express, 22, 8856, (2014). CrossRef K. Gut, \"Study of a Broadband Difference Interferometer Based on Low-Cost Polymer Slab Waveguides\", Nanomaterials, 9, 729 (2019). CrossRef M. Nordstrom, et al, \"Single-Mode Waveguides With SU-8 Polymer Core and Cladding for MOEMS Applications\", J. Light. Techn., 25, 1284, (2007). CrossRef D. Segelstein, \"The complex refractive index of water\", M.S. Thesis, University of Missouri, (1981). DirectLink https://www.yokogawa.com/pl/solutions/products-platforms/ DirectLink","PeriodicalId":20055,"journal":{"name":"Photonics Letters of Poland","volume":"12 1","pages":"28-30"},"PeriodicalIF":0.6,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48803753","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}

{"title":"Methodology for measuring the gap size using a fiber-optic displacement sensor exemplified by a centrifugal blood pump","authors":"M. Gawlikowski, Przemyslaw Kurtyka, Jerzy Zalewski, Magda Zarwańska-Doffek, A. Kapis","doi":"10.4302/plp.v12i2.1017","DOIUrl":"https://doi.org/10.4302/plp.v12i2.1017","url":null,"abstract":"In order to avoid blood clotting, in the second generation of rotary blood pumps the impeller is suspended without mechanical bearing, using balance of magnetic and hydrodynamic forces. Reaching single tens of microns gap between pump housing and impeller is crucial for level of blood traumatization by the pump. In this paper we would like to present the method of physical measurement of this gap on a running pump with the use of commercial fiber-optic proximity sensor on the example of Polish rotary blood pump ReligaHeart ROT. We also discussed technical requirements of the construction of laboratory stand. Full Text: PDF References S. Westaby, \"Rotary blood pumps as definitive treatment for severe heart failure\", Future Cardiol. 9, 2 (2013). CrossRef R. Delgado, M. Bergheim, \"HeartMate® II left ventricular assist device: a new device for advanced heart failure\", Epert Rev. Med. Devices, 2, 5 (2005). CrossRef M. Ozban, T. Yagdi, C. Engin et al, Transplant proc., 44, 6 (2012). CrossRef A.T. Lanfear, M. Hamandi, J. Fan et al., \"Trends in HeartMate 3: What we know so far\", J. Card. Surg., 35, 1 (2020). CrossRef Ch. Zengsheng, S. Anqiang, W. Hongyu, \"Non-physiological shear stress-induced blood damage in ventricular assist device\", Medicine in Novel Technology and Devices, 3 (2019). CrossRef A. M. Robertson, A. Sequeira, R. G. Owens, Rheological models of blood In: L. Formaggia, A. Quarteroni, A Veneziani (eds) Cardiovascular Mathematics (Milano, Springer-Verlag 2009) CrossRef M. Gawlikowski et al., \"Necessity of telemonitoring in patients treated by means of cardiac assist systems on the example of Polish rotary blood pump ReligaHeart ROT\", Advances in Intelligent Systems and Computing, 925 (2019). CrossRef R. Kustosz, et al., \"The tin coating utilisation as blood contact surface modification in implantable rotary left ventricle assist device religaheart ROT\", Arch. Matall. Mater., 60, 3 (2015). CrossRef S. S. Patil, A. D. Shaligram, \"Analytical study of performance variations of fiber optic micro-displacement sensor configurations using mathematical modeling and an experimental test jig\", IJSER, 4, 11 (2013). DirectLink Philtec Application Note, 6, 25 (2017) CrossRef","PeriodicalId":20055,"journal":{"name":"Photonics Letters of Poland","volume":"12 1","pages":"46-48"},"PeriodicalIF":0.6,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43457470","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}

{"title":"Effect of thermal annealing on sensing properties of optical fiber sensors coated with indium tin oxide nano-overlays","authors":"B. Michalak, P. Sezemský, V. Stranak, M. Śmietana","doi":"10.4302/plp.v12i2.1024","DOIUrl":"https://doi.org/10.4302/plp.v12i2.1024","url":null,"abstract":"In this work we discuss an effect of thermal annealing on optical and electrical properties of indium tin oxide (ITO) thin films deposited on a short section of multimode polymer-clad silica (PCS) optical fiber core. ITO films were deposited using different configuration of high power impulse magnetron sputtering (HiPIMS) and radio frequency magnetron sputtering (RF MS) cathodes. Due to tuned ITO film thickness it was possible to observe for these structures a lossy-mode resonance (LMR) and trace changes in properties of the films. Electrical resistance of the ITO overlays was also measured. Both optical and electrical measurements were repeated after annealing at 200°C in a tube furnace and nitrogen atmosphere. The measurements have shown that thermal annealing changes optical response to external refractive index (RI) of the fiber sensor and also changes the ITO layer resistivity. As an effect of thermal annealing we observed a shift of the LMR towards longer wavelengths. In addition as a result of annealing, the resistivity of the ITO layer was reduced. Full Text: PDF References M. Sobaszek et al., \"Optical monitoring of thin film electro-polymerization on surface of ITO-coated lossy-mode resonance sensor\", Proc. SPIE, vol. 10323, pp. 103234W, 2017. CrossRef I. Del Villar et al., \" Generation of lossy mode resonances by deposition of high-refractive-index coatings on uncladded multimode optical fibers\", J. Opt., vol. 12, no. 9, pp. 95503, 2010. CrossRef M. Śmietana et al., \"Simultaneous optical and electrochemical label-free biosensing with ITO-coated lossy-mode resonance sensor\", Biosensors and Bioelectronics, vol. 154, pp. 112050, 2020. CrossRef P. Niedzialkowski et al., \" Electrochemical performance of indium-tin-oxide-coated lossy-mode resonance optical fiber sensor\", Sensors and Actuators B: Chemical, vol. 301, no. 12, pp. 1-10, 2019. CrossRef V. Stranak et al., \"Effect of mid-frequency discharge assistance on dual-high power impulse magnetron sputtering\", Surface & Coatings Technology, vol. 206, no. 11-12. pp. 2801-2809, 2012. CrossRef I. Del Villar et al., \"Design rules for lossy mode resonance based sensors\", Appl. Opt., vol. 51, no. 19, pp. 4298-4307, 2012. CrossRef W. F. Wu and B. S. Chiou, \"Effect of annealing on electrical and optical properties of RF magnetron sputtered indium tin oxide films\", Appl. Surf. Sci., vol. 68, no. 4, pp. 497-504, 1993. CrossRef M. Smietana et al., \"Optical Monitoring of Electrochemical Processes With ITO-Based Lossy-Mode Resonance Optical Fiber Sensor Applied as an Electrode\", J. Light. Technol., vol. 36, no. 4, pp. 954-960, 2018. CrossRef M. Śmietana et al., \"Study on Combined Optical and Electrochemical Analysis Using Indium‐tin‐oxide‐coated Optical Fiber Sensor\", Electroanalysis, vol. 31, no.2, pp. 398-404, 2019. CrossRef","PeriodicalId":20055,"journal":{"name":"Photonics Letters of Poland","volume":"12 1","pages":"58-60"},"PeriodicalIF":0.6,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49174462","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}

{"title":"The importance of monitoring vergence eye movements for solutions using virtual technologies","authors":"M. Piszczek, M. Pomianek, M. Maciejewski, L. Jodłowski, Piotr Krukowski","doi":"10.4302/plp.v12i2.1015","DOIUrl":"https://doi.org/10.4302/plp.v12i2.1015","url":null,"abstract":"Eyesight monitoring systems are of particular interest to virtual technology research teams and concern mainly three key aspects: physiological, technical and functional. The first one is to solve the so-called conflict of vergence and accommodation. In contrast to typical gaming applications, e.g. vision therapy requires the ability to smoothly transfer attention between the points of near and far. The technical aspect is primarily the search for new measurement methods, which is particularly important in the case of mobile goggles with limited computing capabilities of the processor. The last aspect concerns the possibility of creating effective HMI (Human Machine Interface) solutions. Full Text: PDF References J. D. Bayliss et. al., \"Lazy Eye Shooter: a Novel Game Therapy for Visual Recovery in Adult Amblyopia\", 2012 IEEE International Games Innovation Conference CrossRef Y. L. Chen., L. Shi, J. W. L. Lewis, M. Wang, \"Infrared Retinoscopy\", Photonics 2014, 1, 303-322. CrossRef W. Fuhl, M. Tonsen, A. Bulling, and E. Kasneci, \"Pupil detection for head-mounted eye tracking in the wild: an evaluation of the state of the art,\" Mach. Vis. Appl., vol. 27, no. 8, pp. 1275-1288, 2016 CrossRef N. Sarkar, D. Strathearn, G. Lee, M. Olfat, A. Rohani and R. R. Mansour, \"A large angle, low voltage, small footprint micromirror for eye tracking and near-eye display applications\", 2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS), Anchorage, AK, 2015, pp. 855-858, CrossRef","PeriodicalId":20055,"journal":{"name":"Photonics Letters of Poland","volume":"12 1","pages":"40-42"},"PeriodicalIF":0.6,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44161625","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}

{"title":"Optoelectronic tracking system for shooting simulator - tests in a virtual reality application","authors":"M. Maciejewski, M. Piszczek, M. Pomianek, N. Pałka","doi":"10.4302/plp.v12i2.1025","DOIUrl":"https://doi.org/10.4302/plp.v12i2.1025","url":null,"abstract":"We present test results of an authorial tracking device developed in the SteamVR system, optimized for use in a missile launcher shooting simulator. Data for analysis was collected using the virtual reality training application, with the launcher set on a stable tripod and held by a trainee who executed two scenarios with static and movable targets. The analysis of experimental data confirms that the SteamVR system together with the developed tracker can be successfully implemented in the virtual shooting simulator. Full Text: PDF References D. Bogatinov, P. Lameski, V. Trajkovik, K.M. Trendova, \"Firearms training simulator based on low cost motion tracking sensor\", Multimed. Tools Appl. 76(1) (2017) CrossRef D.C. Niehorster, L. Li, M. Lappe, \"The Accuracy and Precision of Position and Orientation Tracking in the HTC Vive Virtual Reality System for Scientific Research\", Iperception. 8(3) (2017) CrossRef A. Yates, J. Selan, POSITIONAL TRACKING SYSTEMS AND METHODS. US20160131761A1, (2016) DirectLink P. Caserman, A. Garcia-Agundez, R. Konrad, S. Gobel, R. Steinmetz, Virtual Real. 23(2) (2019) 155-68. CrossRef","PeriodicalId":20055,"journal":{"name":"Photonics Letters of Poland","volume":"12 1","pages":"61-63"},"PeriodicalIF":0.6,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49420809","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}

{"title":"IR thermographic camera as useful and smart tool to analyse defects in organic solar cells","authors":"W. Przybył, K. Bogdanowicz, Beata Jewłoszewicz, A. Dylong, K. Dysz, A. Iwan, A. Januszko","doi":"10.4302/plp.v12i2.976","DOIUrl":"https://doi.org/10.4302/plp.v12i2.976","url":null,"abstract":"The main goal of this paper was to show that organic layers prepared for organic solar cells construction can be partially characterized by IR thermographic camera to detect dysfunctionalities of the active layer. Moreover, we used IR thermographic camera to check thermal and electrical behaviour of created simple solar cells to reduce time and cost in global production of solar cells. As model system organic compounds such as PTB7 polymer and small molecule PC71BM as commercial components and newly synthesized imine PV-BLJ-SC11 there were used, to construct simple devices. Full Text: PDF References K. D. G. I. Jayawardena, L. J. Rozanski, C. A. Mills, M. J. Beliatis, N. A. Nismy, S. R. P. Silva, \"Inorganics-in-Organics’: recent developments and outlook for 4G polymer solar cells\", Nanoscale, 2013, 5, 8411-8427. CrossRef Y. Lin, X. Zhan, \"Oligomer Molecules for Efficient Organic Photovoltaics\", Accounts of Chemical Research, 2016, 49, 175-183. CrossRef R. Steim, S. A. Choulis, P. Schilinsky, U. Lemmer, C. J. Brabec, \"Formation and impact of hot spots on the performance of organic photovoltaic cells\", Applied Physics Letters, 2009, 94, 043304. CrossRef J. Hepp, F. Machui, H. J. Egelhaaf, C. J. Brabec, A. Vetter, \"Automatized analysis of IR‐images of photovoltaic modules and its use for quality control of solar cells\", Energy Science and Engineering. 2016, 4, 363-371. CrossRef H. Hoppe, J. Bachmann, B. Muhsin, K. H. Drue, I. Riedel, G. Gobsch, C. Buerhop-Lutz, C. J. Brabec, V. Dyakonov, \"Quality control of polymer solar modules by lock-in thermography\", Journal of Applied Physics, 2010, 107, 014505. CrossRef J. Bachmann, C. Buerhop-Lutz, C. Deibel, I. Riedel, H. Hoppe, C. J. Brabec, V. Dyakonov, \"Organic solar cells characterized by dark lock-in thermography\", Solar Energy Materials and Solar Cells, 2010, 94, 642-647. CrossRef A. Rozycka, K. A. Bogdanowicz, N. Gorska, J. Rysz, M. Marzec, A. Iwan, R. Pich, A. Januszko, \"Influence of TiO 2 Nanoparticles on Liquid Crystalline, Structural and Electrochemical Properties of (8Z)-N-(4-((Z)-(4-pentylphenylimino)methyl)benzylidene)-4-pentylbenzenamine\", Materials, 2019, 12, 1097. CrossRef M. L. Petrus, R. K. M. Bouwer, U. Lafont, S. Athanasopoulos, N. C. Greenham, T. J. Dingemans, \"Small-molecule azomethines: organic photovoltaics via Schiff base condensation chemistry\", Journal of Materials Chemistry A, 2014, 2, 9474-9477. CrossRef K. A. Bogdanowicz, A. Iwan, \"Symmetrical Imines with Trirphenylamine Core and the Method of Obtaining Thereof.\", March 11th 2019, patent application P.429044. DirectLink K. P. Korona, T. Korona, D. Rutkowska-Zbik, S. Grankowska-Ciechanowicz, A. Iwan, M. Kaminska, \"Polyazomethine as a component of solar cells-theoretical and optical study\", Journal of Physics and Chemistry of Solids, 2015, 86, 186-193. CrossRef","PeriodicalId":20055,"journal":{"name":"Photonics Letters of Poland","volume":"12 1","pages":"25-27"},"PeriodicalIF":0.6,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42753233","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}

{"title":"Model of the planar broadband differential waveguide interferometer as a humidity sensor","authors":"K. Gut","doi":"10.4302/plp.v12i2.1022","DOIUrl":"https://doi.org/10.4302/plp.v12i2.1022","url":null,"abstract":"The paper presents a model of the planar broadband differential waveguide interferometer. Its response to the change in thickness and refractive index of the waveguide layer due to the change in humidity is presented. The analysis was carried out for the wavelength range from 450 nm to 850 nm. The orthogonal modes TE0 and TM0, which propagate in this wavelength range, are considered. It is shown that by using light near the maximum of the system characteristic, instead of the spectrometer, the total power at the system output can be measured. Full Text: PDF References M. Kitsara, K. Misiakos, I. Raptis, and E. Makarona, \"Integrated optical frequency-resolved Mach-Zehnder interferometers for label-free affinity sensing\", Opt. Express 18, 8193 (2010). CrossRef K. Misiakos, I. Raptis, A. Salapatas, E. Makarona, A. Bostials, et al., \"Broad-band Mach-Zehnder interferometers as high performance refractive index sensors: Theory and monolithic implementation\", Opt. Express 22, 8856 (2014). CrossRef K. Misiakos, I. Raptis, E. Makarona, A. Botsialas, A. Salapatas, et al \"All-silicon monolithic Mach-Zehnder interferometer as a refractive index and bio-chemical sensor\", Opt. Express 22, 26803 (2014). CrossRef K. Misiakos, E. Makarona, M. Hoekman, R. Fyrogenis, K. Tukkiniemi, et al., \"All-Silicon Spectrally Resolved Interferometric Circuit for Multiplexed Diagnostics: A Monolithic Lab-on-a-Chip Integrating All Active and Passive Components\", ACS Photonics 6, 1694 (2019). CrossRef E. Makarona, A. Salapatas, I. Raptis, P. Petrou, S. Kakabakos, et al., \"Broadband Young interferometry for simultaneous dual polarization bioanalytics\", J Opt Soc Am B 34, 1691 (2017). CrossRef K. Gut, \"Broad-band difference interferometer as a refractive index sensor\", Opt. Express 25, 3111 (2017). CrossRef K. Gut, \"Study of a Broadband Difference Interferometer Based on Low-Cost Polymer Slab Waveguides\", Nanomaterials 9, 729 (2019). CrossRef W. Lukosz, \"Integrated optical chemical and direct biochemical sensors\", Sensor Actuat. B-Chem. 29, 37 (1995). CrossRef W. Knoll, O. Azzaroni, H. Duran, J. Kunze-Liebhauser, K. Lau, et al. \"Nanoporous thin films in optical waveguide spectroscopy for chemical analytics\", Analytical and Bioanalytical Chemistry 412, 3299 (2020). CrossRef A. Bucciarellia, V. Mullonib, D. Maniglio, R.K. Pal, V.K. Yadavalli, at al., \"A comparative study of the refractive index of silk protein thin films towards biomaterial based optical devices\", Optical Materials 78, 407 (2018). CrossRef V.Prajzler, K. Min, S. Kim, and P. Nekvindova, \"The Investigation of the Waveguiding Properties of Silk Fibroin from the Visible to Near-Infrared Spectrum\", Materials 11, 112 (2018). CrossRef Q. Li, N. Qi, Y. Peng, Y. Zhange, L.Shi, et al. \"Aggregation induced red shift emission of phosphorus doped carbon dots\", RSC Advances 7, 178889 (2017). CrossRef P. Giovanni, Z. Yuji, N. Deboki, P. Nereus, D. Kaplan, et al. \"The optical properties of regenerated silk fibroin films obtained from","PeriodicalId":20055,"journal":{"name":"Photonics Letters of Poland","volume":"12 1","pages":"55-57"},"PeriodicalIF":0.6,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46297850","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}

{"title":"Stochastic pulse density modulation for a power LED driver","authors":"W. Wojtkowski, R. Kociszewski","doi":"10.4302/plp.v12i2.1027","DOIUrl":"https://doi.org/10.4302/plp.v12i2.1027","url":null,"abstract":"PWM signals are widely used and are easy to implement in a variety of LEDs applications, however they suffer from significant harmonic generation. As an alternative, SPDM - Stochastic Pulse Density Modulation or SSDM – Stochastic Signal Density Modulation ideas may be considered. The SPDM idea is to spread the energy at different frequencies so that it is easier to filter the desired harmonics, because of their lower amplitudes. Example of implementation of SPDM in LED application using a programmable system-on-chip device is presented in the paper. Proper operation of the proposed implementation is proved by the laboratory results. Full Text: PDF References W. Wojtkowski, A. Karpiuk, The Influence of the PWM frequency and duty cycle of a RGB LED driver on the optical spectrum of the emitted light, Przeglad Elektrotechniczny, 2012, R. 88, nr 4a, pp. 217-219. CrossRef J. Hegedus, G. Hantos, A. Poppe, Light output stabilisation of LED based streetlighting luminaires by adaptive current control, Microelectronics Reliability, vol. 79, pp. 448-456, 2017. CrossRef J. Kusznier, W. Wojtkowski, Spectral properties of smart LED lamps, PHOTONICS LETTERS OF POLAND, VOL. 12 (1), 16-18 (2020) CrossRef I. Fryc, P. Tabaka, \"Zanieczyszczenia nocnego niebosklonu światlem emitowanym przez oprawy oświetlenia zewnetrznego\", Przeglad Elektrotechniczny R93(6), 46 (2017). DirectLink I. Fryc, F. Bisegna, P. Tabaka, Lighting of recreation grounds as a source of sky glow - the influence of luminaire type on this phenomenon, 1st IEEE International Conference On Environment And Electrical Engineering and 17th IEEE Industrial And Commercial Power Systems Europe (2017). CrossRef M. Gilewski, \"The ecological hazard of artificial lighting in greenhouses\", Photon. Lett. Poland 11(3), 87 (2019). CrossRef J. Kusznier, W. Wojtkowski, Impact of climatic conditions on PV panels operation in a photovoltaic power plant, IEEE, 2019 15th Selected Issues of Electrical Engineering and Electronics (WZEE), Zakopane, Poland (2019). CrossRef J. Kusznier, W. Wojtkowski, Impact of climatic conditions and solar exposure on the aging of PV panels, IEEE, 2019 15th Selected Issues of Electrical Engineering and Electronics (WZEE), Zakopane, Poland (2019). CrossRef PSoC® Technical Reference Manual - Document No. 001-14463 Rev. *K. Cypress Semiconductor Corp. 2017. DirectLink","PeriodicalId":20055,"journal":{"name":"Photonics Letters of Poland","volume":"12 1","pages":"64-66"},"PeriodicalIF":0.6,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45005464","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}

{"title":"Numerical analysis of integrated photonics structures for hemoglobin sensor application","authors":"P. Struk","doi":"10.4302/plp.v12i2.1008","DOIUrl":"https://doi.org/10.4302/plp.v12i2.1008","url":null,"abstract":"This paper presents sensor structure dedicated for determination the key properties of blood – concentration level and oxidation level. The sensor structure is based integrated optics circuit with diamond-based planar waveguide including prism and grating coupler. The paper is focused on numerical analysis of selected properties of sensor structure for optimization sensing parameters. Full Text: PDF References D.A. Gell, Blood Cells, \"Structure and function of haemoglobins\", Molecules and Diseases 70 (2018). CrossRef I. Singh, A. Weston, A. Kundur, G. Dobie, Haematology Case Studies with Blood Cell Morphology and Pathophysiology (Elsevier: Amsterdam, The Netherlands, 2017) DirectLink P. D. Sturkie, P. Griminger, Blood: Physical Characteristics, Formed Elements, Hemoglobin, and Coagulation Avian Physiology (Springer-Verlag New York Inc. 1976). CrossRef A. Dutta, B. Deka, P.P. Partha, Planar Waveguide Optical Sensors: From Theory to Applications (Springer: Berlin, Germany, 2016). CrossRef S. Kang, K. Sasaki, H. Minamitani, \"Determining the absorption coefficient of hemoglobin derivatives with integrated optic waveguide sensor\", IEEE Engineering in Medicine and Biology Society (1992). CrossRef P. Struk, \"Design of an Integrated Optics Sensor Structure Based on Diamond Waveguide for Hemoglobin Property Detection\", Materials 12(1) 175 (2019). CrossRef W. Lukosz, K. Tiefenthaler, \"Sensitivity of integrated optical grating and prism couplers as (bio)chemical sensors\", Sensors and Actuators 15 (1988). CrossRef P.V. Lambeck, \"Integrated optical sensors for the chemical domain\", Measurement Science and Technology - IOPscience 17 (2006), CrossRef W. Lukosz, \"Integrated optical chemical and direct biochemical sensors\", Sensors and Actuators B: Chemical 29 (1995). CrossRef P. Struk, T. Pustelny, K. Golaszewska, E. Kaminska, M. Borysiewicz, M. Ekielski, And A. Piotrowska, \"Photonic structures with grating couplers based on ZnO\", Opto−Electronics Review 19(4) (2011). CrossRef J. Haas, E. V. Catalan, P. Piron, F. Nikolajeff, L. Osterlund, M. Karlsson, B. Mizaikoff, \"Polycrystalline Diamond Thin-Film Waveguides for Mid-Infrared Evanescent Field Sensors\", ACS Omega 3 (2018). CrossRef P. Struk, \"Design of an integrated optics sensor structure for hemoglobin property detection\", Proceedings of SPIE 11204 (2019). CrossRef P. Struk, T. Pustelny, K. Golaszewska, E. Kaminska, M. Borysiewicz, M. Ekielski, A. Piotrowska, \"Hybrid photonics structures with grating and prism couplers based on ZnO waveguides\", Opto-Electronics Review 21 (2013). CrossRef V. Prajzler, M. Varga, P. Nekvindova, Z.; Remes, A. Kromka, \"Design and investigation of properties of nanocrystalline diamond optical planar waveguides\", Optics Express 21 (2013), CrossRef E.N. Lazareva, V.V. Tuchin, \"Measurement of refractive index of hemoglobin in the visible/NIR spectral range\", Journal of Biomedical Optics 23 (2018). CrossRef Optiwave Systems Inc. \"OptiFDTD Technical Background and Tutorials - Finite\" (20","PeriodicalId":20055,"journal":{"name":"Photonics Letters of Poland","volume":"12 1","pages":"37-39"},"PeriodicalIF":0.6,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49399088","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}