Optical and Quantum Electronics最新文献

A low-complexity DCO-GFDM waveform for visible light communications

IF 3.3 3区工程技术

Optical and Quantum Electronics Pub Date : 2024-12-21 DOI: 10.1007/s11082-024-07993-1

Haidar Zaeer Dhaam, Faris Mohammed Ali

{"title":"A low-complexity DCO-GFDM waveform for visible light communications","authors":"Haidar Zaeer Dhaam, Faris Mohammed Ali","doi":"10.1007/s11082-024-07993-1","DOIUrl":"10.1007/s11082-024-07993-1","url":null,"abstract":"<div><p>Visible light communication (VLC) has recently gained significant attention due to its broad spectrum and advantages over radio frequency systems. VLC typically utilizes light-emitting diodes or laser diodes as a light source, which requires real and positive signals through intensity modulation and direct detection. Direct current-biased optical orthogonal frequency division multiplexing is a common type of modulation used in VLC. However, this technique suffers from a high peak-to-average power ratio (PAPR), which causes clipping distortions at the light source. On the other hand, generalized frequency division multiplexing (GFDM) technology offers high flexibility, high spectrum efficiency, and less out-of-band and PAPR, making it a promising technology for VLC systems but at the cost of complexity. This study proposes a novel real-signal GFDM for VLC, eliminating the need for Hermitian symmetry to reduce computational complexity. This method aims to reduce computational complexity while maintaining system performance. It significantly reduces the required number of complex multiplication and addition by lowering the IFFT/FFT size to half compared to traditional methods. The new approach reduces the complexity and size of hardware and power consumption compared to the conventional DCO-GFDM, making it a more practical solution for the next communications generations.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Soxhlet extraction of natural dyes from the husk of Cocos nucifera and their efficacious application as sensitizer in TiO2 based dye sensitized solar cells

IF 3.3 3区工程技术

Optical and Quantum Electronics Pub Date : 2024-12-21 DOI: 10.1007/s11082-024-07963-7

K. Inbarajan, S. Sowmya, Naidu Dhanpal Jayram, T. Nandhini

引用次数: 0

Effect of electrochemical conditions during the elaboration of CdS/ITO thin films

IF 3.3 3区工程技术

Optical and Quantum Electronics Pub Date : 2024-12-21 DOI: 10.1007/s11082-024-07984-2

Abdelghani Khaldi, Mohamed Redha Khelladi, Nadir Bouarissa, Laurent Tabourot

{"title":"Effect of electrochemical conditions during the elaboration of CdS/ITO thin films","authors":"Abdelghani Khaldi, Mohamed Redha Khelladi, Nadir Bouarissa, Laurent Tabourot","doi":"10.1007/s11082-024-07984-2","DOIUrl":"10.1007/s11082-024-07984-2","url":null,"abstract":"<div><p>In this study, the effect of potential and deposition times on the electrochemical, structural, morphological and optical properties of CdS films obtained by electrodeposition was investigated. The results obtained during the different characterizations carried out show that the films present different phases with the presence of the same CdS composition. Electrochemical characterization by cyclic voltammetry allowed us to determine the electrochemical range of the potential corresponding to the formation of CdS. X-ray diffraction analysis indicated that the CdS nanostructures has a polycrystalline nature and orthorhombic system and preferential orientation along the (420) plane. Surface morphological studies by (AFM and SEM) revealed the presence of nano-crystalline grains and all the deposited films have almost uniform grain size and well covered on the surface of the substrates. Composition analyses showed high stoichiometry, and the S/Cd atomic ratio is close to one. Optical studies showed that the average transmittance of the deposited films as a function of electrochemical parameters in the visible and near infrared regions is approximately (20–70)%, and the band gap ranged from (2.25 to 2.45) eV. The optical transmission of deposits varies randomly with increasing potential.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

THz generation by non-linear mixing of laser and its second order harmonic on CNT array inlaid over dielectric substrate

IF 3.3 3区工程技术

Optical and Quantum Electronics Pub Date : 2024-12-21 DOI: 10.1007/s11082-024-06640-z

Himani Juneja, Anuraj Panwar, Prashant Chauhan

{"title":"THz generation by non-linear mixing of laser and its second order harmonic on CNT array inlaid over dielectric substrate","authors":"Himani Juneja, Anuraj Panwar, Prashant Chauhan","doi":"10.1007/s11082-024-06640-z","DOIUrl":"10.1007/s11082-024-06640-z","url":null,"abstract":"<div><p>A network of CNTs embedded on a dielectric substrate is used to transmit two laser beams with frequencies <span>({upomega }_{1})</span> and <span>({upomega }_{2})</span> and wave vectors <span>({text{k}}_{1})</span> and <span>({text{k}}_{2})</span> respectively. These laser pulses cause a localized plasma to develop when they contact with nanotubes. As a result, electrons develop oscillatory velocities. By applying ponderomotive pressure to the electrons, it causes oscillations in the charge density at <span>(2{upomega }_{1})</span> and <span>({upomega }_{1}-{upomega }_{2})</span> frequencies. At the frequency <span>(2{upomega }_{1}-{upomega }_{2})</span>, which is in the terahertz (THz) region, the laser exerts a ponderomotive force on the free electrons of carbon nanotubes causing a nonlinear current density. Each nanotube functions as an oscillating electric dipole that emits THz radiation. We establish the governing equation for THz efficiency and its dependence on laser incidence angle, amplitude, nanotube size, and CNT spacing. We obtain maximum peak of THz power at incident angle <span>({uptheta }_{0}approx 23.{5}^{^circ })</span>. The terahertz power of carbon nanotubes is highly dependent on their radius and length, so as these parameters increase, their terahertz power increases as well. Whereas on decreasing separation between the nanotubes, THz efficiency increases.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cu2O related defect impact on organic FASnI3/MAPbI3 solar cell performance

IF 3.3 3区工程技术

Optical and Quantum Electronics Pub Date : 2024-12-21 DOI: 10.1007/s11082-024-07974-4

Nora Amele Abdeslam, Mustapha C. E. Yagoub, Nouredine Sengouga

{"title":"Cu2O related defect impact on organic FASnI3/MAPbI3 solar cell performance","authors":"Nora Amele Abdeslam, Mustapha C. E. Yagoub, Nouredine Sengouga","doi":"10.1007/s11082-024-07974-4","DOIUrl":"10.1007/s11082-024-07974-4","url":null,"abstract":"<div><p>Usually, there are some discrepancies between simulations and measurements in Perovskite solar cells (PSCs). This is partially due to ignoring defects in transporting layers. In this work, realistic simulations were undertaken to study the effects of bulk defects in cuprous oxide (Cu<sub>2</sub>O), the Hole Transporting Layer (HTL). Firstly, two different cell absorbers namely, the Br doped formamidinium tin iodide (Br-FASnI<sub>3</sub>) and the methylammonium lead iodide (MAPbI<sub>3</sub>), were considered. The thicknesses of the absorber, the electron transporting layer (ETL) (SnO<sub>2</sub>), and the HTL (Cu<sub>2</sub>O), were optimized, leading to 24.34% and 20.30% power conversion efficiencies (PCE) for MAPbI<sub>3</sub> and Br-FASnI<sub>3</sub>, respectively. Furthermore, ETL doped antimony (Sb–SnO<sub>2</sub>) showed better performance in MAPbI<sub>3</sub>-based PSCs while multiple functional group organic molecule of 3-(formamidinothio)-1-propanesulfonic acid (FTPS) as additive to SnO<sub>2</sub> (FTPS–doped SnO<sub>2</sub>) was better for Br-FASnI<sub>3</sub>-based solar cells. Secondly, the impact of defects in Cu<sub>2</sub>O was considered. In Br-FASnI<sub>3</sub> devices, the acceptors largely influence the PCE. So, by enhancing the open circuit voltage V<sub>OC</sub>, especially the shallower level (0.16 eV), the PCE reached 27.97%. Their effect is less pronounced when they are deeper (1.3 eV). As for the donors, they tend to reduce V<sub>OC</sub>. On the other hand, because in the MAPbI<sub>3</sub>-based solar cell the ETL is already thin, the photogenerated electrons will be almost directly extracted, which reduces the collected current density J<sub>SC</sub> and therefore the PCE. As for the HTL donor traps, their effect is similar to that in the Br-FASnI<sub>3</sub> solar cell, where they drastically reduce the PSC performance via the recombination process.</p><h3>Graphic abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Laser pulse tuning for optimized photodetector performance in CsPbI3/Si heterojunctions

IF 3.3 3区工程技术

Optical and Quantum Electronics Pub Date : 2024-12-21 DOI: 10.1007/s11082-024-07985-1

Sahar I. Hussein, Raid A. Ismail, Nahida J. Almashhadani, Ali J. Addie

{"title":"Laser pulse tuning for optimized photodetector performance in CsPbI3/Si heterojunctions","authors":"Sahar I. Hussein, Raid A. Ismail, Nahida J. Almashhadani, Ali J. Addie","doi":"10.1007/s11082-024-07985-1","DOIUrl":"10.1007/s11082-024-07985-1","url":null,"abstract":"<div><p>Cesium lead iodide (CsPbI<sub>3</sub>) is a promising material for optoelectronic applications due to its high absorption coefficients, long carrier diffusion lengths and tunable energy gap. This study investigates the influence of the number of laser pulses on the structural, optical and electrical properties of CsPbI<sub>3</sub> films deposited on silicon substrates by pulsed laser deposition (PLD). X-ray diffraction and scanning electron microscopy analysis shows that increasing the laser pulses from 40 to 130 leads to an improvement in the crystallinity of the films, transforming isolated crystallites into a dense interconnected network. Optical characterization shows that films deposited with 100 pulses have an ideal band gap of 2.4 eV. Hall effect measurements show that films with 70 pulses have the highest carrier mobility of 25 cm<sup>2</sup>/Vs, while films with 100 pulses achieve a balance between a high carrier concentration of 1.2 × 10<sup>18</sup> cm<sup>− 3</sup> and a low resistivity of 5 × 10<sup>− 5</sup> Ω.cm, indicating optimal electrical properties. The CsPbI<sub>3</sub>/Si photodetectors fabricated with 100 pulses show excellent performance with responsivity of 6.7 A/W, a detectivity of 1 × 10<sup>12</sup> Jones and a quantum efficiency of 12 × 10<sup>2</sup>% at 600 nm. This work demonstrates the importance of optimizing the PLD laser pulses to control the film properties for high performance photodetectors.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Li-substituted ZnO nanoparticles exhibiting room temperature optical gas sensing for NO2 with swift response and recovery

IF 3.3 3区工程技术

Optical and Quantum Electronics Pub Date : 2024-12-20 DOI: 10.1007/s11082-024-07980-6

Neha Singh, Nitu Singh, Abhinav Bhargav, K. M. Mishra, Jyoti Bamne, Fozia Z. Haque

{"title":"Li-substituted ZnO nanoparticles exhibiting room temperature optical gas sensing for NO2 with swift response and recovery","authors":"Neha Singh, Nitu Singh, Abhinav Bhargav, K. M. Mishra, Jyoti Bamne, Fozia Z. Haque","doi":"10.1007/s11082-024-07980-6","DOIUrl":"10.1007/s11082-024-07980-6","url":null,"abstract":"<div><p>This paper reports the results of NO<sub>2</sub> gas sensing performance through photoluminescence method. The pure and Li substituted (0.1%, 0.2%, and 0.3% w/w) zinc oxide nanoparticles were synthesized via simple aqueous solution growth technique.The structural, morphological and optical properties of the samples were characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, UV–Vis spectroscopy, and photoluminescence (PL) spectroscopy. PL spectral studies indicated that the synthesized ZnO nanoparticles possess more vacancies or lattice defects compared to the well explored ZnO nanoparticles prepared using various other synthesis techniques. The presented work focuses on optical gas sensing at room temperature under normal atmospheric pressure to detect the presence of nitrogen dioxide. The optical NO<sub>2</sub> gas sensing studies revealed the substantial role of Li doping on the sensing properties of the synthesized samples, with gas concentrations ranging from 500 ppb to 30 ppm. Remarkably, 0.3% w/w Li-doped ZnO nanoparticles demonstrated an 70.25% response to 30 ppm NO<sub>2</sub> gas, with a quick response time (<i>τ</i>) of 16 s and a recovery time of approximately 21 s at room temperature and normal atmospheric pressure. The short response, recovery time, high sensing response, low detection limit and stability exhibited by 0.3% Li-ZnO nanoparticles make them promising candidate fordesigning efficient and reliable optical sensors for NO<sub>2</sub> gas.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Role of ZnO reinforced B2O3–BaF2–Pr6O11–Na2O glasses: Synthesis, physical, linear optical properties and γ-ray attenuation efficacy

IF 3.3 3区工程技术

Optical and Quantum Electronics Pub Date : 2024-12-19 DOI: 10.1007/s11082-024-06723-x

Nada Alfryyan, Norah A. M. Alsaif, Hanan Al-Ghamdi, A. S. Abouhaswa, M. S. Sadeq, A. M. Abdelghany, S. M. Kotb, S. Talaat, Y. S. Rammah

{"title":"Role of ZnO reinforced B2O3–BaF2–Pr6O11–Na2O glasses: Synthesis, physical, linear optical properties and γ-ray attenuation efficacy","authors":"Nada Alfryyan, Norah A. M. Alsaif, Hanan Al-Ghamdi, A. S. Abouhaswa, M. S. Sadeq, A. M. Abdelghany, S. M. Kotb, S. Talaat, Y. S. Rammah","doi":"10.1007/s11082-024-06723-x","DOIUrl":"10.1007/s11082-024-06723-x","url":null,"abstract":"<div><p>PrZn-glasses were synthesized with nominal compositions of (60-x)B<sub>2</sub>O<sub>3</sub> + 24.5BaF + 0.5PrO + 15NaO + xZnO: x = 0 (PrZn0)–10(PrZn10). Physical, linear/nonlinear optical characteristics as well as γ-ray protection competence of the prepared glasses have been investigated. The density changed from 3.31 to 3.61 3.31 g/cm<sup>3</sup>, while the molar volume (V<sub>m</sub>) reduced from 29.95 g/mol of PrZn0 sample to 27.80 g/mol for samples PrZn0 and PrZn10. UV–Vis measurements of the proposed glasses showed that the absorption bands corresponding to 445, 469, 483, and 589 nm are correlated to electronic transitions of <sup>3</sup>H<sub>4</sub> → <sup>3</sup>P<sub>2</sub>, <sup>3</sup>H<sub>4</sub> → <sup>3</sup>P<sub>1</sub>, <sup>3</sup>H<sub>4</sub> → <sup>3</sup>P<sub>0</sub>, and <sup>3</sup>H<sub>4</sub> → <sup>1</sup>D<sub>2</sub> exciting levels. The optical energy gap (E<sub>g</sub>) for PrZn0 sample was 2.864 eV, while for PrZn10 sample was 2.693 eV. The values of n were increased gradually with ZnO additives. Molar refraction (R<sub>m</sub>), electronic polarizability (α<sub>m</sub>), reflection loss (R<sub>L</sub>) and optical transmission (T) changed significantly as ZnO ratios changed in the glass networks. The sample PrZn10 possessed the maximum mass-attenuation coefficient (MAC). The linear-attenuation (LAC) values differed from (86.050 to 111.546) cm<sup>−1</sup> (at 0.015 MeV) and from (0.094 to 0.106) cm<sup>−1</sup> (at 15 MeV) for PrZn0 and PrZn10 samples. The half- value layers (HVLs) of the suggested glasses were less than values of others (ordinary concrete and glasses). Therefore, the suggested glasses in the present work can be applied in optical application and as γ-ray attenuation materials.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142858723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spectroscopic, photometric properties and energy transfer mechanism of white light emitting Li2SiO3:Tb3+, Eu3+, Mn4+ phosphors

IF 3.3 3区工程技术

Optical and Quantum Electronics Pub Date : 2024-12-19 DOI: 10.1007/s11082-024-07964-6

Priya Barik, Ishwar Prasad Sahu

{"title":"Spectroscopic, photometric properties and energy transfer mechanism of white light emitting Li2SiO3:Tb3+, Eu3+, Mn4+ phosphors","authors":"Priya Barik, Ishwar Prasad Sahu","doi":"10.1007/s11082-024-07964-6","DOIUrl":"10.1007/s11082-024-07964-6","url":null,"abstract":"<div><p>In this communication, we report a new kind of trichromatic white light emitting Li<sub>2</sub>SiO<sub>3</sub> (LMS): xTb<sup>3+</sup>, yEu<sup>3+</sup>, zMn<sup>4+</sup> phosphors which were prepared by solid-state reaction method. Powder X-ray crystallographic structural analysis indicates that the sample has an orthorhombic crystal structure with the Cmc21 space group. The photoluminescence excitation and emission spectra of the LMS: 0.04Tb<sup>3+</sup>, 0.04Eu<sup>3+</sup>, zMn<sup>4+</sup> phosphors were clearly monitored. The emission of three main colours, green, orange-red and rich red, was obtained from Tb<sup>3+</sup>, Eu<sup>3+</sup>, and Mn<sup>4+</sup>, respectively. Energy was transferred from Tb<sup>3+</sup> → Eu<sup>3+</sup> → Mn<sup>4+</sup> ions, as the interactions of electric quadrupole–quadrupole (q-q) with the efficiencies of 76.6%, which resulted in the enhancement of luminescence intensity. In addition, average life time decay was determined by using double exponential fit, yielding a value of 0.286 ms under 378 nm excitation. It is noteworthy that the LMS: 0.04Tb<sup>3+</sup>, 0.04Eu<sup>3+</sup>, zMn<sup>4+</sup> can produce white light when the Mn<sup>4+</sup> ratio is adjusted appropriately during ultraviolet excitation. Furthermore, for the phosphors as made, the temperature-dependent luminescence spectra show good thermal quenching characteristics. The results suggest that the LMS: 0.04Tb<sup>3+</sup>, 0.04Eu<sup>3+</sup>, zMn<sup>4+</sup> phosphors can be exploited in solid state lighting applications.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Toward a neuro-fuzzy inference system approach for the performance analysis of all-optical half-adder based on CPA

IF 3.3 3区工程技术

Optical and Quantum Electronics Pub Date : 2024-12-19 DOI: 10.1007/s11082-024-07976-2

Somayeh Mousavi, Mohammad Ali Mansouri-Birjandi, Mohammad Reza Rakhshani, Mehdi Rezaei

{"title":"Toward a neuro-fuzzy inference system approach for the performance analysis of all-optical half-adder based on CPA","authors":"Somayeh Mousavi, Mohammad Ali Mansouri-Birjandi, Mohammad Reza Rakhshani, Mehdi Rezaei","doi":"10.1007/s11082-024-07976-2","DOIUrl":"10.1007/s11082-024-07976-2","url":null,"abstract":"<div><p>The half-adder (HA) is one of the most useful combinational logic functions for data processing. We report on demonstrating an all-optical HA comprising AND and XOR all-optical logic gates (AO-LGs) without nonlinearity and thus with arbitrarily low intensity, ultrafast light-by-light control. The proposed method engages the coherent interaction of optical waves on a metasurface nanostructure, known as coherent perfect absorption (CPA), which is only 50 nm thick, to efficiently control the absorption of near-infrared (700–800 nm) pulses. Particle Swarm Optimization (PSO) determines the most efficient dimensions of metasurface unit cells. Another significant innovation of this article is the utilization of an adaptive neuro-fuzzy inference system (ANFIS) instead of a simple threshold. The flexibility of the designed fuzzy system allows it to be used for any CPA system, applied in the implementation of logic gates. Achieved figures of merit of AO-LGs, including contrast ratio (CR = 89.77 dB) and extinction ratio (ER = 87.53 dB), prove the impressive effects of ANFIS on the gates’ efficiency. Smaller dimensions, lower power consumption, and a reduced logic state range compared to other HAs are additional specifications of the designed HA, achieved through optimized metasurface-based CPA and ANFIS.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"57 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0