Journal of Optical Communications最新文献_第10页

Effect of MIMO scheme on MWIR FSO link & comparison with SWIR wavelength in the presence of different visibility and strong turbulence circumstances 在不同能见度和强湍流环境下，MIMO方案对MWIR FSO链路的影响&与SWIR波长的比较

Journal of Optical Communications Pub Date : 2023-07-25 DOI: 10.1515/joc-2023-0182

S. Mukherjee, S. Paul, S. Mazumdar

引用次数: 1

Study of coupling optics of cylindrical microlens fabricated on tips of graded index fibers having different profile exponents 不同轮廓指数渐变折射率光纤尖端柱面微透镜的耦合光学研究

Journal of Optical Communications Pub Date : 2023-07-25 DOI: 10.1515/joc-2023-0129

Anindita Chattopadhyay, Angshuman Majumdar, S. Gangopadhyay

引用次数: 0

Distortion managed directly modulated on-off keying signal transmission for 10 Gbps visible light communications using electrical filtration 失真管理直接调制开关键控信号传输为10 Gbps可见光通信使用电子滤波

Journal of Optical Communications Pub Date : 2023-07-25 DOI: 10.1515/joc-2023-0179

M. Sudhakar, G. K. Rajini

引用次数: 0

Dual port dual drive/LiNb MZM measured modulators based light transmitter sources for ultra-long haul optical wireless systems 用于超长距离无线光学系统的双端口双驱动/LiNb MZM测量调制器光发射源

Journal of Optical Communications Pub Date : 2023-07-19 DOI: 10.1515/joc-2023-0171

Darwin Nesakumar Annath Kumar, M. Tamilselvi, Bhuvaneswari Balasubramanian, N. Ashokkumar, R. Prabu, Aziz Mahoumd Taher

{"title":"Dual port dual drive/LiNb MZM measured modulators based light transmitter sources for ultra-long haul optical wireless systems","authors":"Darwin Nesakumar Annath Kumar, M. Tamilselvi, Bhuvaneswari Balasubramanian, N. Ashokkumar, R. Prabu, Aziz Mahoumd Taher","doi":"10.1515/joc-2023-0171","DOIUrl":"https://doi.org/10.1515/joc-2023-0171","url":null,"abstract":"Abstract This study demonstrated the dual port dual drive/LiNb MZM measured modulators based light transmitter sources for ultra-long haul optical wireless systems. The lighted signal spectrum is clarified after OWC channel through the use of LiNb MZM modulators and dual port dual drive MZM measured modulators. Lighted signal power amplitude spectrum variation is measured after OWC channel (150 km reach) through the use of LiNb MZM modulators and dual port dual drive MZM measured modulators. The total base signal band power amplitude value is estimated after OWC channel (150 km reach) through the use of both LiNb MZM modulators and dual port dual drive MZM measured modulators. Light sampled signals analysis based S parameters is clarified and sketched carefully with spectral frequency after amplification stage through the use of LiNb MZM modulators and dual port dual drive MZM measured modulators. Besides, the signal power amplitude quality with spectral time is simulated and sketched after amplification stage through the use of dual port dual drive MZM measured modulators and LiNb MZM modulators.","PeriodicalId":16675,"journal":{"name":"Journal of Optical Communications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49031476","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}

引用次数: 0

Performance evaluation of a 2.56 Tbps DP-16QAM WDM system under various channel spacings and weather conditions using MIMO configurations 使用MIMO配置的2.56 Tbps DP-16QAM WDM系统在各种信道间隔和天气条件下的性能评估

Journal of Optical Communications Pub Date : 2023-07-19 DOI: 10.1515/joc-2023-0161

Jaafar Ali Jaafar, W. A. H. Hadi, A. Sabri

{"title":"Performance evaluation of a 2.56 Tbps DP-16QAM WDM system under various channel spacings and weather conditions using MIMO configurations","authors":"Jaafar Ali Jaafar, W. A. H. Hadi, A. Sabri","doi":"10.1515/joc-2023-0161","DOIUrl":"https://doi.org/10.1515/joc-2023-0161","url":null,"abstract":"Abstract This paper proposes a 16 × 160 Gbps DP-16QAM-WDM-FSO system with 100 and 25 GHz channel spacing, utilizing coherent detection with digital signal processing to enhance the receiver sensitivity. The system’s performance is evaluated under different climate circumstances, such as dust, rain, and fog. The MIMO technique with 2 × 2, 4 × 4, and 8 × 8 configurations are suggested to mitigate weather attenuation effects. Performance metrics, including bit error rate (BER), error vector magnitude (EVM %), quality factor (Q-factor), and optical signal-to-noise ratio (OSNR), are utilized to evaluate the system’s performance. Results show that the proposed system increases the maximum transmission distance by 12.67 %–49.33 %, 19.17 %–78.66 %, and 25.68 %–108 % for all weather circumstances when utilizing 2 × 2 MIMO, 4 × 4 MIMO, and 8 × 8 MIMO, respectively. Moreover, while reducing channel spacing improves the system’s spectral efficiency from 1.6 to 6.4 bits/s/Hz, it also degrades the link range and requires an increased OSNR. A performance comparison between our work and related works is also considered in this paper.","PeriodicalId":16675,"journal":{"name":"Journal of Optical Communications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43828708","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}

引用次数: 0

Concentric triangular mapping with iterative substitution method for PAPR reduction in OCDM system without SI 无SI OCDM系统PAPR降低的同心三角形映射迭代替换法

Journal of Optical Communications Pub Date : 2023-07-18 DOI: 10.1515/joc-2023-0134

M. Singh, A. Goel

{"title":"Concentric triangular mapping with iterative substitution method for PAPR reduction in OCDM system without SI","authors":"M. Singh, A. Goel","doi":"10.1515/joc-2023-0134","DOIUrl":"https://doi.org/10.1515/joc-2023-0134","url":null,"abstract":"Abstract OCDM, a new MCM scheme, has been proposed in the literature. Like widely used OFDM, OCDM also has a drawback of high PAPR. PAPR reduction schemes like SLM and PTS require information about phase factors i.e. SI used at the transmitting end for PAPR reduction for recovery of original data signal at the receiver. Transmission and recovery of SI is always a concern. In this paper a new CTM-IS method has been proposed for PAPR reduction of OCDM signal without SI. Main objective of the proposed scheme is to improve the error performance of SI free SLM and PTS based schemes without any degradation in PAPR reduction. PAPR performance and SER performance, over AWGN as well as multipath Rayleigh fading channels, of OCDM signal with proposed CTM-IS scheme is evaluated. Analytical expression for SER of the proposed CTM-IS scheme over AWGN channel is also derived. The computational complexity of the proposed CTM-IS scheme is also presented. Performance of the proposed CTM-IS scheme is compared with the existing MSM combined with SLM (MSM-SLM), CCM combined with SLM (CCM-SLM) and OM combined with SLM (OM-SLM) schemes. The proposed CTM-IS scheme has demonstrated to offer a theoretical power gain of about 3.01 dB, 2.55 dB, and 14.23 dB over MSM-SLM, CCM-SLM and OM-SLM schemes, respectively. Proposed CTM-IS scheme provides better SER performance with respect to MSM-SLM, CCM-SLM and OM-SLM without any loss in the PAPR performance. Moreover, computational complexity of CTM-IS scheme is less than that of MSM-SLM and CCM-SLM schemes.","PeriodicalId":16675,"journal":{"name":"Journal of Optical Communications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44357270","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}

引用次数: 0

Kerr effect based optical switching for the assessment of all-optical sequence generator and decoder circuits 用于评估全光序列发生器和解码器电路的基于克尔效应的光开关

Journal of Optical Communications Pub Date : 2023-07-17 DOI: 10.1515/joc-2023-0116

Lokendra Singh, N. Agrawal

{"title":"Kerr effect based optical switching for the assessment of all-optical sequence generator and decoder circuits","authors":"Lokendra Singh, N. Agrawal","doi":"10.1515/joc-2023-0116","DOIUrl":"https://doi.org/10.1515/joc-2023-0116","url":null,"abstract":"Abstract The sequence generator and decoders are used for noise analysis, signal propagation, data processing, and bit error rate analysis. The semiconductor and modern electronic components are facing challenges in terms of processing speed and data rates. However, by using photons rather than electrons as the information carriers, these difficulties can be reduced. Photonic devices attained the operating speed in the regime of terahertz, but sit back due to the diffraction limit, which can be overcome by employing plasmon-based devices or all-optical devices. This work presents a numerical investigation of metal-insulator-metal (MIM) plasmonic waveguides based two-bit sequence generator (SG) and decoder. The structure of SG and decoder circuits are designed within the footprints of 86 × 9 and 140 × 9 µm, by cascading one power splitter (PS) and four Mach-Zehnder interferometers (MZIs), and two PS and five MZI, respectively. To design the MZI, the optimization of the S-bend waveguide, the coupling length of the power splitter, and the length of the interferometric arm are done by recording the output power. The highest extinction ratio of 22.1 dB is attained at the coupling and interferometric arm lengths of 1.5 µm and 5 µm, respectively. The propagation of the optical signal through the structure of SG is observed by using a two-dimensional finite difference time domain method-based tool.","PeriodicalId":16675,"journal":{"name":"Journal of Optical Communications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48410832","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}

引用次数: 0

Novel technique to cancel MAI for OCDMA system OCDMA系统中消除MAI的新技术

Journal of Optical Communications Pub Date : 2023-07-17 DOI: 10.1515/joc-2022-0275

Manisha Bharti

引用次数: 0

Comparison of performance for third order immune photonic transmission link incorporating phase shifters and biased optimized dual parallel Mach–Zehnder modulator 结合移相器与偏置优化双平行马赫-曾德尔调制器的三阶免疫光子传输链路性能比较

Journal of Optical Communications Pub Date : 2023-07-17 DOI: 10.1515/joc-2023-0133

Pulkit Berwal, Sarika Singh

引用次数: 0

Influence of multi-modes contest on the dynamics of a quantum dot light emitting diode 多模竞争对量子点发光二极管动力学的影响

Journal of Optical Communications Pub Date : 2023-07-17 DOI: 10.1515/joc-2023-0131

Hawraa A. Hussein, H. A. Al Husseini

{"title":"Influence of multi-modes contest on the dynamics of a quantum dot light emitting diode","authors":"Hawraa A. Hussein, H. A. Al Husseini","doi":"10.1515/joc-2023-0131","DOIUrl":"https://doi.org/10.1515/joc-2023-0131","url":null,"abstract":"Abstract The effects of quick mode-competition phenomena on the dynamics of semiconductor quantum dot light-emitting diode (QDLED) are the subject of theoretical investigations in this study. The analyses are based on numerical simulations of the superposed multi-mode rate equations, which take into account the inherent fluctuations related to the spontaneous emission. The modal photon number and the injected electron number are reserved correlated during the multimode sources’ numerical generating process. Based on a self-consistent model, the optical frequency w effects which result in competition phenomena among lighting modes are introduced. The phenomenon of mode-competition is used to explain how noise sources affect it. Mode-competition processes cause instantaneous coupling between variations in mode intensity, which leads to instability in the dynamics of the modes and changes the state of operation. Over a broad range of carriers and photon rates (including the capture rate of the witting layer (WL) into the dot, the photon output rate in the optical mode, and the nonradiative decay rates of the number of carriers in the QD and WL), the dynamics of modes and the characteristics of the output spectrum are investigated. Three types of operation are distinguished: jittering single mode, stable single mode, and stable multimode.","PeriodicalId":16675,"journal":{"name":"Journal of Optical Communications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46462281","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}

引用次数: 0