Alexis C. Sparapani;Lucas N. Gutierrez;Santiago M. Hernandez;Pablo I. Fierens;Diego F. Grosz;Govind P. Agrawal
{"title":"Raman Suppression and All-Optical Control in Media With a Zero-Nonlinearity Wavelength","authors":"Alexis C. Sparapani;Lucas N. Gutierrez;Santiago M. Hernandez;Pablo I. Fierens;Diego F. Grosz;Govind P. Agrawal","doi":"10.1109/JQE.2024.3424417","DOIUrl":"10.1109/JQE.2024.3424417","url":null,"abstract":"We study the interaction between an intense soliton and a weak control pulse in optical media with a zero-nonlinearity wavelength (ZNW). By means of numerical simulations, we show that the soliton’s wavelength and group delay can be modified by a proper choice of parameters of the control pulse, such as its power, frequency, and initial delay. Most remarkably, we demonstrate either the suppression of the soliton’s Raman-Induced Frequency Shift (RIFS) or the enhancement of this effect and explain it by temporal analogies of reflection and transmission. Finally, we propose an all-optical switching scheme based on time and frequency windows.","PeriodicalId":13200,"journal":{"name":"IEEE Journal of Quantum Electronics","volume":"60 4","pages":"1-6"},"PeriodicalIF":2.2,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141572768","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}
{"title":"A Comprehensive Investigation on Enhanced Robustness for Parallel VCSEL-RC Utilizing Narrow-Band Filtered Optical Feedback","authors":"Sha-Sha Deng;Wei-Jie Song;Mei-Ling Zou;Xin-Hong Jia;Yu-Quan Tang;Ming-Yu Bao;Jiang-Tao Lv;Xuan Zhang","doi":"10.1109/JQE.2024.3416990","DOIUrl":"10.1109/JQE.2024.3416990","url":null,"abstract":"Photonic reservoir computing (RC) is a kind of artificial neural network (ANN) structure which is easy to train, with higher accuracy and speed, and has important application prospects in various fields, such as the time-series prediction, waveform recognition, speech recognition, nonlinear channel equalization, etc. In this work, we demonstrated a comprehensive numerical investigation on the characteristics and physical mechanisms of dual-channel and parallel RC based on vertical-cavity surface-emitting laser (VCSEL-RC) with filtered optical feedback (FOF). Using the dual-channel time-series prediction tasks as standard benchmark, the effects of feedback parameters (feedback strength, filter bandwidth, feedback detuning) and type on normalized mean square error (NMSE) were explored in detail. We found that: Selecting a smaller filter bandwidth can widen the range of values of feedback strength corresponding to smaller NMSE, which can effectively strengthen the robustness of parallel VCSEL-RC; When the feedback detuning varies from positive to negative value, the range of parameters space for feedback strength-filter bandwidth corresponding to lower NMSE tends to be narrowed; Compared with parallelly polarized FOF (PP-FOF), orthogonally polarized FOF (OP-POF) shows a stronger robustness enhancement; For smaller feedback strength, NMSE value is insensitive to the interior parameters of VCSEL. We also evaluated the processing rate of parallel VCSEL-RC with FOF. This study is valuable on enriching the understanding for nonlinear dynamics of FOF-based VCSEL-RC, and can provide a design guideline towards parallel, dual-channel RC with robust performance.","PeriodicalId":13200,"journal":{"name":"IEEE Journal of Quantum Electronics","volume":"60 4","pages":"1-8"},"PeriodicalIF":2.2,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141549374","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}
{"title":"Optical Circuit for Quantum Similarity Measurement Algorithm","authors":"Vivek Mehta;Sonali Jana;Utpal Roy","doi":"10.1109/JQE.2024.3415126","DOIUrl":"10.1109/JQE.2024.3415126","url":null,"abstract":"We report a similarity measurement algorithm, based on quantum optics formulation, where a coherent state is used as the elementary quantum resource. The algorithm is demonstrated for an image database and we provide an architecture with constituent optical elements in linear order with respect to the image resolution. The obtained phase-distributed multimode coherent state is fed into an image retrieval scheme and we identify the appropriate laser intensity parameter for similarity measurement. We demonstrate the viability of the protocol through an objective quality assessment of images by adding consecutive layers of noises. The results are in good agreement with the expected outcome. The image distortion-sensitivity analysis of the metric establishes the further merit of the model. Our quantum algorithm has wider applicability also in supervised machine learning tasks.","PeriodicalId":13200,"journal":{"name":"IEEE Journal of Quantum Electronics","volume":"60 6","pages":"1-8"},"PeriodicalIF":2.2,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141941391","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}
{"title":"A High-Speed High-Sensitivity Multi-Beam- Interferometer-Assistant SOA-PIN Photodetector With High Wavelength Drift Tolerance","authors":"Yulan Zhou;Jia Zhao;Xun Li","doi":"10.1109/JQE.2024.3415162","DOIUrl":"https://doi.org/10.1109/JQE.2024.3415162","url":null,"abstract":"In this work, we have proposed a multi-beam-interferometer-assistant SOA-PIN (MBIA-SOA-PIN) photodetector aiming at achieving a high sensitivity and a high wavelength drift tolerance by reducing the SOA’s amplified spontaneous emission (ASE) noise through a finite impulse response (FIR)-type filter. Our simulation results show that the MBIA-SOA-PIN photodetector has a wavelength drift tolerance of ±1.92 nm, and a sensitivity of -18.2 dBm at a bit-error-rate (BER) of 10-12 under a data rate of 240 Gbps. Compared with the GA-SOA-PIN photodetector which has the best performance among various types of photodetectors ever reported, the MBIA-SOA-PIN photodetector improves the wavelength drift tolerance and reduces the sensitivity dependence on polarization, at the trade-off of slightly lowering the sensitivity for TE polarized signals.","PeriodicalId":13200,"journal":{"name":"IEEE Journal of Quantum Electronics","volume":"60 4","pages":"1-10"},"PeriodicalIF":2.2,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141453346","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}
{"title":"Birefringence Free Spectral Tuning of Bragg Grating Based Fabry-Pérot Resonator in LiNbO₃ Waveguide Employing Counter- Propagating Cladding Modes","authors":"Avijit Koley;Saurabh Mani Tripathi","doi":"10.1109/JQE.2024.3415148","DOIUrl":"https://doi.org/10.1109/JQE.2024.3415148","url":null,"abstract":"We propose and analyse a novel, birefringence free, wavelength filter based on counter-propagating cladding mode assisted integrated-optic Fabry-Pérot (FP) resonator. The FP cavity is formed by suitably designed counter-propagating cladding-mode exciting Bragg gratings in LiNbO3 ridge waveguide. Through rigorous vectorial modeling, we show that appropriate waveguide dimensions and crystal orientation enable birefringence-free operation for both the fundamental core mode as well as the excited cladding mode. We also show that the zero birefringence point of the filter remains unchanged regardless of the applied voltage across the crystal; the reasons behind this behaviour are also explained by the linear electro-optic effect of LiNbO3. Using this we demonstrate a linear electro-optic tuning of the individual Bragg grating spectrum as well as the FP resonances with a typical tuning coefficient of 4 pm/V. Our results may find application in designing high-speed tunable wavelength filters free from input polarization state with linear spectral tuning capabilities.","PeriodicalId":13200,"journal":{"name":"IEEE Journal of Quantum Electronics","volume":"60 4","pages":"1-8"},"PeriodicalIF":2.2,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141560978","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}
{"title":"Non-Central Phase Matching Second Harmonic Generation by Using High Power Femtosecond Ytterbium-Doped Fiber Laser","authors":"Yu Liu;Shuanggen Zhang;Yangbo Bai;Wei Yan;Bochi Guo;Hui Zhou","doi":"10.1109/JQE.2024.3412091","DOIUrl":"https://doi.org/10.1109/JQE.2024.3412091","url":null,"abstract":"Femtosecond laser has unique advantages in frequency conversion owing to broadband spectrum and ultra-high peak power. Here, the authors demonstrate the non-central phase matching second harmonic (SH) process by utilizing femtosecond ytterbium-doped fiber (YDF) laser. Numerical solution of the coupled wave equations for the process of femtosecond pulses SH indicates that the non-central phase matching is determined by the spectral broadening and frequency shift. Pumped by Watt-level 1040 nm femtosecond pluses, the period quasi-phase matching at the 1064 nm wavelength, the fundamental frequency (FF) spectrum broadened up to 34.7 nm width and red shifted about 6 nm, and the non-central phase matching SH with PPKTP crystal waveguide generates at around 523 nm. The experimental measurements confirm the theoretical predictions, and offer a deeper understanding of nonlinear optical effects. The non-central phase matching enables flexible frequency conversion with potential applications in ultrafast optics.","PeriodicalId":13200,"journal":{"name":"IEEE Journal of Quantum Electronics","volume":"60 4","pages":"1-5"},"PeriodicalIF":2.2,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141560996","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}
{"title":"Minimizing Noise in Distributed Reflector Laser Types Under Optical Injection Locking","authors":"Arbnor Berisha;Hendrik Boerma;Ronald Kaiser;Patrick Runge;Martin Schell","doi":"10.1109/JQE.2024.3412088","DOIUrl":"https://doi.org/10.1109/JQE.2024.3412088","url":null,"abstract":"Complex coupled distributed feedback (DFB) lasers and sampled grating distributed Bragg reflector (SGDBR) lasers under optical injection locking are investigated to determine lowest noise operation. A noise reduction (frequency and intensity combined) of up to 15 dB was measured utilizing detuned optical injection locking at the relaxation oscillation frequency. Furthermore, 4 dB improvement in frequency noise at 10 kHz offset for higher coupling coefficient DFBs under injection locking was measured. The DFB lasers show more sensitivity to injection locking and have a lower need of injection power while exhibiting better signal to noise ratio compared to an SGDBR.","PeriodicalId":13200,"journal":{"name":"IEEE Journal of Quantum Electronics","volume":"60 4","pages":"1-6"},"PeriodicalIF":2.2,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10552750","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141448036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhang Meng;Naruya Mochizuki;Shiryu Oiwa;Hua Zhao;Peng Wang;Hongpu Li
{"title":"Helical Long-Period Fiber Grating-Based Band- Selectable and Bandwidth-Enhanced Flat-Top Filter and Its Application to Wideband OAM Mode Converter","authors":"Zhang Meng;Naruya Mochizuki;Shiryu Oiwa;Hua Zhao;Peng Wang;Hongpu Li","doi":"10.1109/JQE.2024.3410234","DOIUrl":"https://doi.org/10.1109/JQE.2024.3410234","url":null,"abstract":"A band-selectable and bandwidth-enhanced flat-top rejection filter is proposed and demonstrated both theoretically and experimentally, which is realized by using single-mode fiber (SMF)-based helical long-period fiber gratings (HLPGs) precisely operated at dispersion turning points (DTPs) of the same azimuthal order cladding mode but with different radial indices. As an important application of such HLPGs, the orbital angular momentum (OAM) mode converters enabling to have either a flat-top bandwidth of ~116 nm@-16 dB but centered at wavelength of ~1530 nm, or a flat-top bandwidth ~130 nm @-16 dB but centered at wavelength of ~1650 nm, have been successfully demonstrated. This is the first report for the experimental demonstration of such high-performance band-rejection filters with bands fully matching the C-L bands of the fiber communication. The proposed HLPGs may find potential applications to OAM mode converters, OAM tweezers, and OAM sensors.","PeriodicalId":13200,"journal":{"name":"IEEE Journal of Quantum Electronics","volume":"60 4","pages":"1-8"},"PeriodicalIF":2.2,"publicationDate":"2024-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141448008","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}
{"title":"Inverse Design of Quasi-Bound States in the Continuum Absorber","authors":"Yun Chen;Jiahe Yu;Wentao Zhang;Wei Huang","doi":"10.1109/JQE.2024.3395127","DOIUrl":"https://doi.org/10.1109/JQE.2024.3395127","url":null,"abstract":"In this study, we demonstrate the relationship between the absorbing frequency and the quasi-bound states in the continuum (quasi-BIC) frequency by employing the coupled-mode theory (CMT) and interference theory. The structure consists of a symmetric-protected BIC metal structure layer, a polyimide spacer layer, and a silicon substrate. The top layer contains two similar metal structures, which make the structure asymmetric by varying one of them slightly, thus producing a symmetrical broken quasi-BIC. When a metal reflecting plate is added to the bottom of the dielectric spacer layer, a quasi-BIC absorber is formed. This is the first theoretical calculation using the coupled mode equation to analyze the relationship between the absorption frequency of a quasi-BIC absorber and the quasi-BIC resonance frequency, which is related to the resonance frequency of a single structure in a unit cell. According to the relationship between the coupling strength and distance between the structures within a unit cell combined with the resonant frequency of quasi-BIC, the geometric parameters of the absorber within a frequency range can be inverse design.","PeriodicalId":13200,"journal":{"name":"IEEE Journal of Quantum Electronics","volume":"60 3","pages":"1-11"},"PeriodicalIF":2.5,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140820418","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}
{"title":"The effect of <i>Myrtus communis</i> L. extract on nephrolithiasis model in rats.","authors":"Busra Ertas, Dogancan Dorucu, Oznur Gulerturk, Ali Sen, Ozge Cevik, Sule Cetinel, Pinar Eker, Asuman Akgun, Emre Tarik Sener, Goksel Sener","doi":"10.14744/nci.2023.09068","DOIUrl":"10.14744/nci.2023.09068","url":null,"abstract":"<p><strong>Objective: </strong>Nephrolithiasis is a common urological disease that can lead to renal failure. Oxidative stress has been shown to be a contributing factor for nephrolithiasis and many agents have been studied to prevent and treat oxidative stress-related nephrolithiasis and renal damage. <i>Myrtus communis</i> (MC) extract has been shown to be an important antioxidant in different animal models. In this study, MC extract was administered preventively or therapeutically to rats with kidney stones, and its effectiveness was investigated.</p><p><strong>Methods: </strong>Wistar albino rats were divided into four groups (n=8); control (C), ethylene glycol (EG), EG+preventive MC, and EG+curative MC groups. The nephrolithiasis model was created by adding 0.75% EG to drinking water for 8 weeks. Ultimately, 24-hour urine was collected to measure calcium, citrate, and creatinine levels. After decapitation, kidney tissues were harvested for histological analyses, measurement of osteopontin and 8-hydroxydeoxyguanosine (8-OHdG) levels, and N-acetyl-β-glucosaminidase (NAG), myeloperoxidase (MPO) and caspase-3 activities.</p><p><strong>Results: </strong>In 24-hour urine samples, calcium, citrate and creatinine levels were decreased in the EG group, while oxalate levels were increased and in treatment groups these parameters returned to control levels. MPO, 8-OHdG, caspase-3 and NAG activity were significantly increased in tissue and these changes were reversed in both MC groups. Histological findings also supported the biochemical parameters.</p><p><strong>Conclusion: </strong>MC can reduce oxidative stress and histopathological changes in kidney tissues in rat nephrolithiasis model when used as either a preventive or therapeutic agent. If supported with further clinical trials, MC might have clinical implications in preventing oxidative renal cell injury and ultimately kidney stone formation.</p>","PeriodicalId":13200,"journal":{"name":"IEEE Journal of Quantum Electronics","volume":"44 1","pages":"91-98"},"PeriodicalIF":1.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11095334/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84293637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}