Iet Optoelectronics最新文献_第6页

IF 1.6 4区计算机科学

Iet Optoelectronics Pub Date : 2025-07-18

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Wideband Reconfigurable Multifunctional Analogue Photonic Chip Based on Planar Waveguides 基于平面波导的宽带可重构多功能模拟光子芯片

IF 1.6 4区计算机科学

Iet Optoelectronics Pub Date : 2025-07-18 DOI: 10.1049/ote2.70011

Qingping Hu, Lili Peng, Yu Sun, Lihua Wang, Zhiwen Ming, Chaotan Sima

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Optical Wireless Data and Power Transfer for In-Body Electronic Devices: A Proof-of-Concept Study Using Ex Vivo Porcine Samples 体内电子设备的光学无线数据和能量传输：使用离体猪样本的概念验证研究

IF 1.6 4区计算机科学

Iet Optoelectronics Pub Date : 2025-07-11 DOI: 10.1049/ote2.70012

Syifaul Fuada, Mariella Särestöniemi, Marcos Katz

{"title":"Optical Wireless Data and Power Transfer for In-Body Electronic Devices: A Proof-of-Concept Study Using Ex Vivo Porcine Samples","authors":"Syifaul Fuada, Mariella Särestöniemi, Marcos Katz","doi":"10.1049/ote2.70012","DOIUrl":"10.1049/ote2.70012","url":null,"abstract":"This study presents a proof-of-concept system for the joint wireless transfer of data and power to in-body electronic devices (IEDs) using near-infrared (NIR) light technology. The proposed system addresses two critical challenges in IEDs: the need for enhanced safety, privacy and security on wireless communication to IEDs and the limitations of battery-based power sources. The testbed, built primarily from commercial off-the-shelf (COTS) components, comprises an 810 nm NIR LED, a photovoltaic cell (PV) as an energy harvester, a power management integrated circuit (PMIC), a photodetector amplifier and a supercapacitor. Ex vivo experiments using porcine tissue samples demonstrated three key capabilities: (1) data transmission using Gaussian minimum shift keying (GMSK) modulation, (2) optical power transfer and (3) joint data and power transfer. In terms of data transfer, a data rate of approximately 95 kb/s has been established. Meanwhile, in the context of power transfer, the proposed system successfully charges a supercapacitor across a 3 cm-thick ex vivo porcine tissue within almost one day under 525 mW/cm2 light exposure (in a continuous wave operation), harvesting approximately 4.2 J of energy at a rate of 45.64 μJ/s. Furthermore, we have demonstrated wireless charging during data transmission, and it is viable. These results validate the feasibility of using optical links for secure, private, and noninvasive communication to IEDs (i.e., forward biotelemetry), which practically prevents remote hacking activities, as the optical beam coverage is very narrow. Furthermore, with the additional feature of wireless charging capabilities, it potentially reduces the need for surgical battery replacements and is expected to lead to improvements in patient care.","PeriodicalId":13408,"journal":{"name":"Iet Optoelectronics","volume":"19 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ote2.70012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144606688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance Analysis of Au/ZrN Based Dual-Core Low-Loss Photonic Crystal Fibre Biosensor for Biomedical Applications Au/ZrN双核低损耗光子晶体光纤生物传感器性能分析

IF 1.6 4区计算机科学

Iet Optoelectronics Pub Date : 2025-07-11 DOI: 10.1049/ote2.70014

Russel Reza Mahmud, Ali Ahnaf Hassan, Samia Monjori Sazeen, Abdullah Al Mahmud Nafiz, Shah Md. Salimullah

{"title":"Performance Analysis of Au/ZrN Based Dual-Core Low-Loss Photonic Crystal Fibre Biosensor for Biomedical Applications","authors":"Russel Reza Mahmud, Ali Ahnaf Hassan, Samia Monjori Sazeen, Abdullah Al Mahmud Nafiz, Shah Md. Salimullah","doi":"10.1049/ote2.70014","DOIUrl":"10.1049/ote2.70014","url":null,"abstract":"The performance of a unique tunable low-loss photonic crystal fibre (PCF)-based refractive index (RI) sensor comprising Gold (Au) and Zirconium Nitride (ZrN) as the plasmonic layer is explored in this article. A comparative analysis of three sensor configurations—Au alone, ZrN alone, and a combination of Au and ZrN—is presented. The sensor achieves the highest spectral sensitivity (WS) of 18,010 nm/RIU at an RI of 1.40 using Au alone and 6150 nm/RIU at an RI of 1.39 using ZrN alone. When both materials are combined, an utmost WS of 38,915 nm/RIU is achieved at an RI of 1.39 for both polarisations, outperforming the other configurations with a confinement loss of only 0.551 dB/cm at an RI of 1.40. This low loss facilitates easy fabrication, allowing for a maximum sensor length of 159 cm, a resolution of 2.57 × 10−6 RIU, and a limit of detection (LOD) of 6.603 × 10−11 RIU2/nm. The bimetallic layer setup enables the opportunity for enhanced optical coupling between the two different types of plasmonic material used, elevating the detection capability of the sensor. The sensing performance displayed can outperform the currently available sensors that use ZrN solely and are very well-compatible with those using Gold alone. However, using gold layer alone gave out better amplitude sensitivity (AS) results which makes it suitable for application when the cost of equipment is in question and the use of ZrN layer alone can also be a smarter choice considering the cost of material, durability and availability of Zirconium in nature when compared to Gold. The tunable sensor can be employed in biomedical applications such as monitoring the glucose level in the bloodstream of patients and detecting blood components such as RBC, WBC, haemoglobin, plasma, and water from blood samples with high precision and accuracy, being able to differentiate between potential interfering molecules.","PeriodicalId":13408,"journal":{"name":"Iet Optoelectronics","volume":"19 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ote2.70014","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144606569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

IF 1.6 4区计算机科学

Iet Optoelectronics Pub Date : 2025-07-11

引用次数: 0

IF 1.6 4区计算机科学

Iet Optoelectronics Pub Date : 2025-07-07

引用次数: 0

Simulation of Lead-Free Double-Absorber Solar Cell Using Cs2TiBr6/La2NiMnO6 Over 33% Efficiency 使用效率超过33%的Cs2TiBr6/La2NiMnO6模拟无铅双吸收太阳能电池

IF 1.6 4区计算机科学

Iet Optoelectronics Pub Date : 2025-07-07 DOI: 10.1049/ote2.70013

Sheikh Hasib Cheragee, Jannatul Afroj Akhi, Muhammad Masud Tarek, Mohammad Tahsin Alam, Mohammad Jahangir Alam

{"title":"Simulation of Lead-Free Double-Absorber Solar Cell Using Cs2TiBr6/La2NiMnO6 Over 33% Efficiency","authors":"Sheikh Hasib Cheragee, Jannatul Afroj Akhi, Muhammad Masud Tarek, Mohammad Tahsin Alam, Mohammad Jahangir Alam","doi":"10.1049/ote2.70013","DOIUrl":"10.1049/ote2.70013","url":null,"abstract":"Despite perovskite solar cells (PSCs) having seen significant improvements in efficiency, their path to industrialisation and commercialisation is hindered by considerable challenges. A major concern is the toxicity associated with lead-based perovskites, which also suffer from rapid degradation. To mitigate these issues, researchers are investigating lead-free alternatives. In this study, we developed a device structure for a lead-free PSC utilising Cs2TiBr6 and La2NiMnO6 as absorbers. By modifying the thickness of these layers with distinct bandgap values, we achieved current matching in the design, which was carried out utilising the solar cell capacitance simulator (SCAPS-1D) with the AM 1.5 G 1 sun light spectrum. The proposed optimised device structure includes layers of FTO, SnO2, Cs2TiBr6, La2NiMnO6, GO and Au. SCAPS-1D is also utilised to assess the impact of defect density, different hole transport layers (HTLs) and operating temperature on the performance of the proposed double-absorber solar cell (DASC). Additionally, it is also examined how the back-reflective coating and varying solar spectra affect the proposed structure. At 300 K, the optimised design achieved a power conversion efficiency (PCE) of 33.38%, an open circuit voltage (Voc) of 0.9158 V, a short-circuit current density (Jsc) of 43.47 mA/cm2 and a fill factor (FF) of 83.85%.","PeriodicalId":13408,"journal":{"name":"Iet Optoelectronics","volume":"19 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ote2.70013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144573173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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A Genetic-Algorithm Enhanced Design of a Silicon-Photonics Wavelength Multiplexer/Demultiplexer Circuit 基于遗传算法的硅光子学波长复用/解复用电路设计

IF 1.6 4区计算机科学

Iet Optoelectronics Pub Date : 2025-07-01 DOI: 10.1049/ote2.70008

Michael Gad, Mira Abboud, Mostafa Fedawy, Hany Mahrous, Ahmed Shaker, W. Fikry, Michael Ibrahim

{"title":"A Genetic-Algorithm Enhanced Design of a Silicon-Photonics Wavelength Multiplexer/Demultiplexer Circuit","authors":"Michael Gad, Mira Abboud, Mostafa Fedawy, Hany Mahrous, Ahmed Shaker, W. Fikry, Michael Ibrahim","doi":"10.1049/ote2.70008","DOIUrl":"10.1049/ote2.70008","url":null,"abstract":"This paper proposes a novel design for a wavelength Multiplexer/Demultiplexer circuit based on the complementary-metal-oxide-semiconductor (CMOS) platform. The wavelength-division multiplexing (WDM) specifications for this device include free spectral range of 100 GHz (equivalently <math>\u0000 <semantics>\u0000 <mrow>\u0000 <mn>0.8</mn>\u0000 <mspace></mspace>\u0000 <mtext>nm</mtext>\u0000 </mrow>\u0000 <annotation> $0.8,text{nm}$</annotation>\u0000 </semantics></math>), channel spacing of 50 GHz, crosstalk less than −23 dB, dispersion less than 30 ps/nm, and preferably shape factor greater than 0.6, alongside minimal insertion loss and device footprint. The new design incorporates four additional ring resonators compared to previous studies, resulting in significant enhancement in crosstalk by 13 and 4 dB for the through port and drop port signals, respectively. Additionally, the transmission shape factor increases by 25% and 50% for the through port and drop port, respectively. The design approach employs a genetic algorithm to achieve optimal coupling coefficients for a multi-objective optimisation problem without a mathematical closed form, significantly reducing the computation time. This proposed algorithm seeks a balanced solution where all performance parameters reach acceptable values rather than optimising each parameter individually. This method proves to be both efficient and expedient, effectively eliminating the trial-and-error approach and the need for visual investigation of the Z-domain of the circuit transmission commonly used in the literature.","PeriodicalId":13408,"journal":{"name":"Iet Optoelectronics","volume":"19 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ote2.70008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144524978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

IF 1.6 4区计算机科学

Iet Optoelectronics Pub Date : 2025-07-01

引用次数: 0

IF 1.6 4区计算机科学

Iet Optoelectronics Pub Date : 2025-06-26

引用次数: 0