Pub Date : 2022-03-04DOI: 10.1109/WRAP54064.2022.9758200
Priyanka Das, Pabita Nath
This work demonstrates an affordable, field-portable smartphone-based sensing tool for estimation of nitrite in water medium. The sensing principle is based on the well-known Beer-Lambert principle where transmitted modulated signal from the sample is captured by the ambient light sensor (ALS) of the phone and correlates its signal intensities with the concentration of nitrite present in the samples. The results obtained with the smartphone sensor is found to be agreed well with the laboratory-grade spectrophotometer.
{"title":"Smartphone-Based Photometric Detection of Nitrite Level in Water","authors":"Priyanka Das, Pabita Nath","doi":"10.1109/WRAP54064.2022.9758200","DOIUrl":"https://doi.org/10.1109/WRAP54064.2022.9758200","url":null,"abstract":"This work demonstrates an affordable, field-portable smartphone-based sensing tool for estimation of nitrite in water medium. The sensing principle is based on the well-known Beer-Lambert principle where transmitted modulated signal from the sample is captured by the ambient light sensor (ALS) of the phone and correlates its signal intensities with the concentration of nitrite present in the samples. The results obtained with the smartphone sensor is found to be agreed well with the laboratory-grade spectrophotometer.","PeriodicalId":363857,"journal":{"name":"2022 Workshop on Recent Advances in Photonics (WRAP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122681264","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 : 2022-03-04DOI: 10.1109/WRAP54064.2022.9758287
M. Chauhan, V. K. Singh
The combination of optical fibers with metal oxide film deposition offers unique and great opportunities to realize novel sensors. This work presents hydrothermally deposited zinc oxide (ZnO) nanorods optical fiber sensor for measuring the level of adulteration in fuels. The presence of kerosene in petrol and diesel alters the refractive index (RI) of adulterated fuel; therefore, optical fiber sensors are capable of measuring RI used for adulteration detection. The proposed fiber sensor's highest average sensitivities obtained for petrol and diesel adulteration are 0.126 dB/% and 0.089 dB/%, respectively in the kerosene concentration range of 0-30%.
{"title":"ZnO coated evanescent field based fiber optic fuel adulteration sensor","authors":"M. Chauhan, V. K. Singh","doi":"10.1109/WRAP54064.2022.9758287","DOIUrl":"https://doi.org/10.1109/WRAP54064.2022.9758287","url":null,"abstract":"The combination of optical fibers with metal oxide film deposition offers unique and great opportunities to realize novel sensors. This work presents hydrothermally deposited zinc oxide (ZnO) nanorods optical fiber sensor for measuring the level of adulteration in fuels. The presence of kerosene in petrol and diesel alters the refractive index (RI) of adulterated fuel; therefore, optical fiber sensors are capable of measuring RI used for adulteration detection. The proposed fiber sensor's highest average sensitivities obtained for petrol and diesel adulteration are 0.126 dB/% and 0.089 dB/%, respectively in the kerosene concentration range of 0-30%.","PeriodicalId":363857,"journal":{"name":"2022 Workshop on Recent Advances in Photonics (WRAP)","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116366916","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 : 2022-03-04DOI: 10.1109/WRAP54064.2022.9758321
Siva Subramaniyam C N, D. Venkitesh
We experimentally demonstrate a multimode optoelectronic oscillator at 2.4 GHz with phase noise of −104.6 dBc/Hz at 100 KHz offset and an RMS jitter of 12.19 ps.
{"title":"Experimental Demonstration of Multimode Optoelectronic Oscillator at 2.4 GHz","authors":"Siva Subramaniyam C N, D. Venkitesh","doi":"10.1109/WRAP54064.2022.9758321","DOIUrl":"https://doi.org/10.1109/WRAP54064.2022.9758321","url":null,"abstract":"We experimentally demonstrate a multimode optoelectronic oscillator at 2.4 GHz with phase noise of −104.6 dBc/Hz at 100 KHz offset and an RMS jitter of 12.19 ps.","PeriodicalId":363857,"journal":{"name":"2022 Workshop on Recent Advances in Photonics (WRAP)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124471744","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 : 2022-03-04DOI: 10.1109/WRAP54064.2022.9758185
Anurag Sharma, Jyoti Kedia, N. Gupta
In this work, SiGe photodetector design with a Ge-phoxonic crystal cavity on top is proposed. The computational modelling shows enhancement in the absorption efficiency over a broad range of midwave infrared spectrum. A high optomechanical coupling gain (>3.6e-4 W/m2/K) with controlled dispersion engineering is observed.
{"title":"Design of a SiGe Waveguide Photodetector with PxC Cavity for Broadband MWIR Sensing","authors":"Anurag Sharma, Jyoti Kedia, N. Gupta","doi":"10.1109/WRAP54064.2022.9758185","DOIUrl":"https://doi.org/10.1109/WRAP54064.2022.9758185","url":null,"abstract":"In this work, SiGe photodetector design with a Ge-phoxonic crystal cavity on top is proposed. The computational modelling shows enhancement in the absorption efficiency over a broad range of midwave infrared spectrum. A high optomechanical coupling gain (>3.6e-4 W/m2/K) with controlled dispersion engineering is observed.","PeriodicalId":363857,"journal":{"name":"2022 Workshop on Recent Advances in Photonics (WRAP)","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132319820","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 : 2022-03-04DOI: 10.1109/WRAP54064.2022.9758202
A. Patnaik, G. P., Sonatan Das, T. Kundu
The fabrication of a multi-channel optical waveguide by utilizing femto-second laser based direct laser writing process is reported in this work. The utility of the multichannel waveguide for refractive index sensing is explored. We envisage that this platform can be used for potential multi target sensing applications
{"title":"Direct Laser Written Multi-channel Optical Waveguide for Refractive Index Sensing","authors":"A. Patnaik, G. P., Sonatan Das, T. Kundu","doi":"10.1109/WRAP54064.2022.9758202","DOIUrl":"https://doi.org/10.1109/WRAP54064.2022.9758202","url":null,"abstract":"The fabrication of a multi-channel optical waveguide by utilizing femto-second laser based direct laser writing process is reported in this work. The utility of the multichannel waveguide for refractive index sensing is explored. We envisage that this platform can be used for potential multi target sensing applications","PeriodicalId":363857,"journal":{"name":"2022 Workshop on Recent Advances in Photonics (WRAP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131056935","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 : 2022-03-04DOI: 10.1109/WRAP54064.2022.9758210
Noorvi Pandey, K. Mittholiya
A new symmetric wire grid polarizer with a sub additional narrow gaps has been designed and simulated. In the frequency range of 0.1 to 1 THz, this polarizer exhibits a ≥8 dB higher extinction ratio than the traditional wire grid polarizer.
{"title":"Design and Simulation of Terahertz Wire Grid Polarizer with Sub Additional Gaps","authors":"Noorvi Pandey, K. Mittholiya","doi":"10.1109/WRAP54064.2022.9758210","DOIUrl":"https://doi.org/10.1109/WRAP54064.2022.9758210","url":null,"abstract":"A new symmetric wire grid polarizer with a sub additional narrow gaps has been designed and simulated. In the frequency range of 0.1 to 1 THz, this polarizer exhibits a ≥8 dB higher extinction ratio than the traditional wire grid polarizer.","PeriodicalId":363857,"journal":{"name":"2022 Workshop on Recent Advances in Photonics (WRAP)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114676448","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 : 2022-03-04DOI: 10.1109/WRAP54064.2022.9758382
Rashmita Kumari, Shubhansi Sharma, S. Varshney, B. Lahiri
In this article, we have shown dual channel optical switching of two Fano resonances by varying graphene's Fermi potential at telecommunication wavelengths of 1.53 µm and 1.57 µm. The two optical switches can be controlled independently; hence we have shown four possible combinations of the switch: “on-on, on-off, off-on, off-off.”
{"title":"Dual-Channel Graphene-Based Optical Switch","authors":"Rashmita Kumari, Shubhansi Sharma, S. Varshney, B. Lahiri","doi":"10.1109/WRAP54064.2022.9758382","DOIUrl":"https://doi.org/10.1109/WRAP54064.2022.9758382","url":null,"abstract":"In this article, we have shown dual channel optical switching of two Fano resonances by varying graphene's Fermi potential at telecommunication wavelengths of 1.53 µm and 1.57 µm. The two optical switches can be controlled independently; hence we have shown four possible combinations of the switch: “on-on, on-off, off-on, off-off.”","PeriodicalId":363857,"journal":{"name":"2022 Workshop on Recent Advances in Photonics (WRAP)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123535643","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 : 2022-03-04DOI: 10.1109/WRAP54064.2022.9758298
S. Jana, K. Devi, D. R. Chowdhury
We report a photonic ring resonator structure in the terahertz (THz) regime based on a topological framework to explore the role of different defect states on the high Q-factor (~ 1200) resonance modes. The simulated transmission result shows a resonance redshift of 10 GHz due to the introduction of a defect state. Such high Q-factor resonance can be used in nonlinear optics and for the development of advanced photonic integrated circuits.
{"title":"High Q-factor terahertz topological ring resonator","authors":"S. Jana, K. Devi, D. R. Chowdhury","doi":"10.1109/WRAP54064.2022.9758298","DOIUrl":"https://doi.org/10.1109/WRAP54064.2022.9758298","url":null,"abstract":"We report a photonic ring resonator structure in the terahertz (THz) regime based on a topological framework to explore the role of different defect states on the high Q-factor (~ 1200) resonance modes. The simulated transmission result shows a resonance redshift of 10 GHz due to the introduction of a defect state. Such high Q-factor resonance can be used in nonlinear optics and for the development of advanced photonic integrated circuits.","PeriodicalId":363857,"journal":{"name":"2022 Workshop on Recent Advances in Photonics (WRAP)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121904198","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 : 2022-03-04DOI: 10.1109/WRAP54064.2022.9758198
P. B., S. Dutta-Gupta
Propagating surface plasmon polaritons excited on 49 at% Ag-Cu alloy thin films are studied experimentally. Co-sputtering technique is used to obtain metastable FCC solid solution phase and further annealed to achieve near equilibrium Ag-rich and Cu-rich phases. The dispersion of alloys is measured using the Kretschmann configuration. We show that the plasmonic response of alloy is sensitive to the phases formed during fabrication. Further, the annealed alloys show narrower dispersion compared to as-deposited alloys.
{"title":"Effect of phase separation on the behavior of surface plasmons in Ag-Cu alloy thin films","authors":"P. B., S. Dutta-Gupta","doi":"10.1109/WRAP54064.2022.9758198","DOIUrl":"https://doi.org/10.1109/WRAP54064.2022.9758198","url":null,"abstract":"Propagating surface plasmon polaritons excited on 49 at% Ag-Cu alloy thin films are studied experimentally. Co-sputtering technique is used to obtain metastable FCC solid solution phase and further annealed to achieve near equilibrium Ag-rich and Cu-rich phases. The dispersion of alloys is measured using the Kretschmann configuration. We show that the plasmonic response of alloy is sensitive to the phases formed during fabrication. Further, the annealed alloys show narrower dispersion compared to as-deposited alloys.","PeriodicalId":363857,"journal":{"name":"2022 Workshop on Recent Advances in Photonics (WRAP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122038005","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 : 2022-03-04DOI: 10.1109/WRAP54064.2022.9758316
Tanmay Bhowmik, A. Chowdhary, Jegyasu Gupta, D. Sikdar
Optical modulators are crucial elements for deciding the overall capacity of an integrated photonic system. We report a compact and energy-efficient electro-absorption modulator. The proposed coupling-assisted design consists of an input silicon rib waveguide and an epsilon-near-zero material based hybrid plasmonic waveguide. With a 17 μm active device length, we achieve energy consumption as low as 62.2 fJ/bit while maintaining a modulation bandwidth of 25.6 GHz and ~10 dB extinction ratio at 1.55 μm wavelength.
{"title":"Coupling-assisted Epsilon-Near-Zero Material based Energy-efficient Electro-Absorption Modulator","authors":"Tanmay Bhowmik, A. Chowdhary, Jegyasu Gupta, D. Sikdar","doi":"10.1109/WRAP54064.2022.9758316","DOIUrl":"https://doi.org/10.1109/WRAP54064.2022.9758316","url":null,"abstract":"Optical modulators are crucial elements for deciding the overall capacity of an integrated photonic system. We report a compact and energy-efficient electro-absorption modulator. The proposed coupling-assisted design consists of an input silicon rib waveguide and an epsilon-near-zero material based hybrid plasmonic waveguide. With a 17 μm active device length, we achieve energy consumption as low as 62.2 fJ/bit while maintaining a modulation bandwidth of 25.6 GHz and ~10 dB extinction ratio at 1.55 μm wavelength.","PeriodicalId":363857,"journal":{"name":"2022 Workshop on Recent Advances in Photonics (WRAP)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116854601","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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