Optics Communications最新文献_第10页

Enhanced robustness of high Q-factor chiral metasurface via Brillouin zone folding

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-06 DOI: 10.1016/j.optcom.2025.131693

Shuang Yang , Xin Zhang , Jia Liu , Hengli Feng , Hongyan Meng , Yang Jia , Yachen Gao

{"title":"Enhanced robustness of high Q-factor chiral metasurface via Brillouin zone folding","authors":"Shuang Yang , Xin Zhang , Jia Liu , Hengli Feng , Hongyan Meng , Yang Jia , Yachen Gao","doi":"10.1016/j.optcom.2025.131693","DOIUrl":"10.1016/j.optcom.2025.131693","url":null,"abstract":"<div><div>Chiral structures have broad applications in fields such as biosensing, chemistry, and nonlinear optics. However, in the design of chiral structures, it is also challenging to achieve a high circular dichroism (CD), high Q-factor and high robustness. In our study, we designed a metasurface based on α-Si, by inducting Brillouin zone folding we enhanced the Q-factor of BICs over a broad wavevector range. Specifically, by doubling the period of the unit structure of the metasurface, we enhanced the Q factors over a wide range via Brillouin zone folding. Furthermore, by breaking in-plane and out-of-plane symmetries of the structure, dual narrowband chiral functionalities were achieved. At the two resonance frequencies of 17.4808 THz and 17.4811 THz, CD values reached −0.94 and −0.93, with Q-factors as high as 3.7 × 10<sup>5</sup>, exhibiting strong robustness in both momentum and geometric spaces. Finaly, we investigated the physical mechanisms of CD and high-Q factors through band structure analysis and multipole decomposition. This work provides new insights into the design of chiral optical devices and offers potential benefits for improving the performance of biosensing and nonlinear optical devices.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131693"},"PeriodicalIF":2.2,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing the performance of NOMA-based VLC systems using a proposed adaptive superimposed constellation Algorithm with an exact SER analysis

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-06 DOI: 10.1016/j.optcom.2025.131701

Androw Sobhy , Shaimaa ElSayed , Hala Abd El-kader Mansour , Maher Abdelrasoul , Esraa M. Eid

{"title":"Enhancing the performance of NOMA-based VLC systems using a proposed adaptive superimposed constellation Algorithm with an exact SER analysis","authors":"Androw Sobhy , Shaimaa ElSayed , Hala Abd El-kader Mansour , Maher Abdelrasoul , Esraa M. Eid","doi":"10.1016/j.optcom.2025.131701","DOIUrl":"10.1016/j.optcom.2025.131701","url":null,"abstract":"<div><div>Non-orthogonal multiple access (NOMA) is an impressive multi-access technology that enhances the spectral efficiency of visible light communication (VLC) systems. However, improved spectral efficiency might lead to performance reduction. To resolve this issue, this paper proposes an innovative approach termed the adaptive superimposed constellation algorithm (ASCA), which is intended for NOMA-based VLC systems. The proposed algorithm includes two fundamental methods: the optimal power allocation factor (OPAF) and adaptive M-QAM selection (AMS). The OPAF method determines the appropriate PA, ensuring non-overlapping decision regions for superimposed constellation symbols across different modulation orders supported by corresponding theoretical results. The AMS method dynamically selects the M-QAM modulation order for users, striking a balance between communication quality and data transmission rates. These methods collectively improve fairness among users, reduce the symbol error rate (SER), analyze limitations regarding the total number of users the system can serve, and evaluate the system's capacity to support multiple users effectively. This paper offers closed-form SER expressions for served users based on square QAM modulation and an imperfect successive interference cancellation (SIC) scenario. Theoretical analysis and simulations confirm the findings. The simulation results show that the proposed algorithm achieves better SER performance than other power domain (PD) NOMA schemes, making it a reliable and efficient solution for integrating NOMA into VLC systems.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131701"},"PeriodicalIF":2.2,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Highly localized linear array of optical rings with multiple tunable degrees of freedom

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-06 DOI: 10.1016/j.optcom.2025.131714

Yongxi Zeng , Yanzhong Yu , Musheng Chen , Pinghui Wu , Shiyang Zheng , Zhonglong Wu , Shunda Lin , Guangping Yao , Qiwen Zhan

{"title":"Highly localized linear array of optical rings with multiple tunable degrees of freedom","authors":"Yongxi Zeng , Yanzhong Yu , Musheng Chen , Pinghui Wu , Shiyang Zheng , Zhonglong Wu , Shunda Lin , Guangping Yao , Qiwen Zhan","doi":"10.1016/j.optcom.2025.131714","DOIUrl":"10.1016/j.optcom.2025.131714","url":null,"abstract":"<div><div>By combining time-reversal techniques and antenna radiation theory, we present a simplified approach to generate a novel highly localized linear array of optical rings with multiple tunable degrees of freedom, without complex optimization of the pupil field. Utilizing the radiation field of a magnetic current line source (MLS) with a periodic cosine-squared tapered distribution, we inversely obtain the pupil field required to generate the desired focal field. The characteristics of the focal field, after focusing by a 4π focusing system, are evaluated through vector Debye diffraction integral theory. The results reveal that the focal field forms a linear array of identical optical rings aligned along the direction of the MLS. Each ring exhibits a purely azimuthal polarization with only azimuthal optical field components. The number of rings is determined by the periodic parameters of the magnetic current, while the position and spacing of the rings depend on both the length and periodic parameters of the MLS. The highly localized, tunable linear array of optical rings holds significant potential for applications in optical parallel processing, multi-point particle trapping, and transportation.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131714"},"PeriodicalIF":2.2,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Remote Sr optical clock comparison with 10−17 fractional instability through a 54 km urban fiber link

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-05 DOI: 10.1016/j.optcom.2025.131712

Fei Meng , Yige Lin , Zhanjun Fang , Zhigang Zhang

{"title":"Remote Sr optical clock comparison with 10−17 fractional instability through a 54 km urban fiber link","authors":"Fei Meng , Yige Lin , Zhanjun Fang , Zhigang Zhang","doi":"10.1016/j.optcom.2025.131712","DOIUrl":"10.1016/j.optcom.2025.131712","url":null,"abstract":"<div><div>We present a frequency instability comparison between two Strontium optical lattice clocks situated at the two campuses of National Institute of Metrology of China (NIM) over 54-km-long optical fiber link. Two clock lasers are locked to the clock transitions of strontium atoms without corrections for the optical lattice clocks’ systematic frequency shifts and relativistic red shift, etc. We utilize the 1542 nm (ITU grid, Channel 44) ECDL laser for the transmission of optical frequencies and assess the fractional instability of the transmitted out-of-loop signal using a 108 km loop-back fiber. The fractional instability of the fiber link attains 1.2 × 10<sup>−16</sup> at 1 s, which closely matches the theoretical limit calculated from the Power Spectral Density (PSD) of the fiber link noise. A modified transfer oscillator (TO) was employed to perform the frequency comparison between remote clock laser (698 nm) and transfer laser (1542 nm). Ultimately, the inter-site comparison of the two clocks achieved a fractional instability better than 5.6 × 10<sup>−16</sup> at 1 s and 3.5 × 10<sup>−17</sup> at 10,000 s.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131712"},"PeriodicalIF":2.2,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

SAFT imaging for detection of micro surface defects improved by vector coherence factor using line source laser induced Rayleigh waves

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-05 DOI: 10.1016/j.optcom.2025.131710

Shutong Dai , Xiaokai Wang , Kangwen Huang , Yu Peng , Wenlong Yan , Zhixiong Han , Linlin Gui

{"title":"SAFT imaging for detection of micro surface defects improved by vector coherence factor using line source laser induced Rayleigh waves","authors":"Shutong Dai , Xiaokai Wang , Kangwen Huang , Yu Peng , Wenlong Yan , Zhixiong Han , Linlin Gui","doi":"10.1016/j.optcom.2025.131710","DOIUrl":"10.1016/j.optcom.2025.131710","url":null,"abstract":"<div><div>Defects such as microcracks and micro holes on material surfaces have significant impact on the operational safety of components. Therefore, the imaging detection, quantification, and localization of surface defects are of critical importance. Laser ultrasonics has been widely applied in defect detection, however, efficient detection of micro surface defects remains a difficulty due to the influence of noise. This study proposed a method that combined the synthetic aperture focusing technique (SAFT) with the laser ultrasonic testing (LUT) for the non-destructive testing (NDT) imaging of micro surface hole defects. The low attenuation characteristic of Rayleigh waves generated by a line source laser expands the detection range for surface defect imaging and improves detection efficiency. Three-dimensional multi-physics simulations of Rayleigh waves produced by both line source and point source lasers were developed to illustrate the propagation characteristics of Rayleigh waves associated with light source configurations. In addition, the interactions between Rayleigh waves generated by various widths of line source lasers and micro hole defects on the surface were simulated and analyzed. Raster scans and SAFT imaging were conducted on surface hole defects with Φ0.1 mm using point source and line source lasers, respectively, for verification of propose method in imaging range. The vector coherence factor (VCF) was applied to improve the SAFT imaging quality, and the factors influencing imaging quality were discussed through experiments. Finally, inspections of surface hole defects with varying diameters were conducted to validate the effectiveness of the proposed method for quantitative defect detection.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131710"},"PeriodicalIF":2.2,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143637317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Large circular dichroic long-wave infrared polarization photodetector based on rotationally operated chiral metasurfaces

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-05 DOI: 10.1016/j.optcom.2025.131680

Bo Cheng , Li Liu , Yuxiao Zou , Guofeng Song , Shujie Li , Kunpeng Zhai

{"title":"Large circular dichroic long-wave infrared polarization photodetector based on rotationally operated chiral metasurfaces","authors":"Bo Cheng , Li Liu , Yuxiao Zou , Guofeng Song , Shujie Li , Kunpeng Zhai","doi":"10.1016/j.optcom.2025.131680","DOIUrl":"10.1016/j.optcom.2025.131680","url":null,"abstract":"<div><div>A long-wave HgCdTe (MCT) detector, akin to the human eye, cannot inherently discern light polarization. Therefore, a miniature polarization filter needs to be placed in front of the image sensor, which defines the intensity of the different polarization modes. However, the circular dichroism and circular polarization extinction ratios of these miniature polarization detectors are typically not very high in the mid and long wavelength bands, which severely limits the polarization resolving power of the pixels. We numerically simulate a circularly dichroic metasurface based on the silicon material, gradually break the spatial symmetry through displacement and rotation operations of the unit cell of metasurface, and analyze the cause of the large chiral symmetry based on the FP mode and near-field map of the electric field intensity. The resulting high-quality chiral metasurface-based photodetector achieves remarkable circular dichroism and circularly polarized extinction ratios of 0.97 and 20 dB, respectively, promising advancements in microdetector technology from intensity to polarization detection. Last but not least, the use of silicon materials aligns with established silicon-based processes, reducing theoretical process preparation challenges.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131680"},"PeriodicalIF":2.2,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-sensitivity and multiple fingerprint detection at an exception point in electromagnetic induced transparent metasurfaces

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-05 DOI: 10.1016/j.optcom.2025.131699

Pingsheng Zhang, Menghan Xiong, Xingyan Zhao, Yang Qiu, Shaonan Zheng, Yuan Dong, Qize Zhong, Ting Hu

{"title":"High-sensitivity and multiple fingerprint detection at an exception point in electromagnetic induced transparent metasurfaces","authors":"Pingsheng Zhang, Menghan Xiong, Xingyan Zhao, Yang Qiu, Shaonan Zheng, Yuan Dong, Qize Zhong, Ting Hu","doi":"10.1016/j.optcom.2025.131699","DOIUrl":"10.1016/j.optcom.2025.131699","url":null,"abstract":"<div><div>Electromagnetic induced transparent (EIT) metasurfaces have garnered significant interest in the terahertz (THz) fingerprint sensing field, owing to their capability to enhance light-matter interactions. However, previous EIT metasurfaces typically exhibit unsatisfactory sensitivity and a narrower detection bandwidth, limiting their capability in broadband fingerprint detection. Here, an EIT metasurface characterized by exceptional point and tunable properties is presented. Based on the synchronous gate voltage tuning, this EIT metasurface demonstrates tunability in the range of 2.6–4.1 THz, which facilitates the acquisition of multiple fingerprint from analytes. And through theoretical calculations, the exceptional point was accurately identified, enabling the EIT metasurface to achieve a sensitivity of 1.22 THz<em>/RIU</em>. Most importantly, the proposed EIT metasurface identifies multiple THz fingerprints of melamine, showcasing a excellent capability for fingerprint sensing. The proposed EIT metasurface integrates high sensitivity and tunability, showcasing significant potential for applications in broadband THz fingerprint sensing.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131699"},"PeriodicalIF":2.2,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Coherent fading suppression method in the COTDR system based on multi-band filtering

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-04 DOI: 10.1016/j.optcom.2025.131696

Xiang Sui , Ying Shang , Sheng Huang , Wenan Zhao , Xiaohan Qiao , Guangqiang Liu , Chunmei Yao , Shouling Liu , Na Wan , Xianggui Kong , Hong Zhao , Fengming Mou , Zhengying Li , Weitao Wang , Chen Wang , Gangding Peng

{"title":"Coherent fading suppression method in the COTDR system based on multi-band filtering","authors":"Xiang Sui , Ying Shang , Sheng Huang , Wenan Zhao , Xiaohan Qiao , Guangqiang Liu , Chunmei Yao , Shouling Liu , Na Wan , Xianggui Kong , Hong Zhao , Fengming Mou , Zhengying Li , Weitao Wang , Chen Wang , Gangding Peng","doi":"10.1016/j.optcom.2025.131696","DOIUrl":"10.1016/j.optcom.2025.131696","url":null,"abstract":"<div><div>In this paper, a multi-band filtering method is proposed and demonstrated to suppress the coherent fading in the coherent optical time-domain reflectometry (COTDR) system. The local light and the Rayleigh backscattered (RBS) light beat together and create the intermediate frequency signal <em>u</em><sub><em>BPD</em></sub>(<em>t</em>). Effective bandwidth <em>BW</em><sub><em>c</em></sub> can be obtained by analysing the frequency composition of <em>u</em><sub><em>BPD</em></sub>(<em>t</em>). Applying band-pass filters with different widths no less than <em>BW</em><sub><em>c</em></sub>, signals with varying amplitude distributions can be obtained. The coherent fading can be eliminated by fusing signals with amplitude evaluation method. The experimental results show that the standard deviation of the demodulated phase is reduced from 0.039 rad to 0.008 rad. Additionally, the signal-to-noise ratio (SNR) of the demodulated signal is 40 dB. The results demonstrated the high reliability of this method.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131696"},"PeriodicalIF":2.2,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deep learning based channel equalization method for wireless UV MIMO scattering turbulence channel

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-04 DOI: 10.1016/j.optcom.2025.131697

T.A.I.F.E.I. ZHAO , Y.U.Q.I. CHEN , Y.U.X.I.N. SUN , feixiang pan

{"title":"Deep learning based channel equalization method for wireless UV MIMO scattering turbulence channel","authors":"T.A.I.F.E.I. ZHAO , Y.U.Q.I. CHEN , Y.U.X.I.N. SUN , feixiang pan","doi":"10.1016/j.optcom.2025.131697","DOIUrl":"10.1016/j.optcom.2025.131697","url":null,"abstract":"<div><div>Aiming at the problems of traditional equalization methods for ultraviolet (UV) multiple-input multiple-output (MIMO) channels in turbulent environments, such as their strong dependence on a priori knowledge of the channel and the low accuracy in coping with the modeling of complex nonlinear channels, this paper proposes a deep-learning-based equalization method for wireless UV-scattering MIMO channels. The method transforms the MIMO signal into a two-dimensional time series, takes the bidirectional long short-term memory (BiLSTM) with bidirectional sequence feature extraction capability as the core, and supplements it with deep neural network for nonlinear modeling to construct a deep learning network model suitable for UV MIMO channel equalization, so as to realize the accurate recovery of the original MIMO signal. Simulation results show that the scheme exhibits stronger BER and MSE performance compared with the least mean square(LMS) algorithm, recursive least squares(LMS) algorithm, and the equalization scheme based on multilayer long and short-term memory(multi-LSTM). At SNR of 9 dB, the scheme reduces the BER by about 67.9%, compared with the equalization scheme based on multi-LSTM, and has stable equalization effects in turbulence environments with different intensities.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131697"},"PeriodicalIF":2.2,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adaptive multi-task convolutional neural network for optical performance monitoring

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-04 DOI: 10.1016/j.optcom.2025.131702

Qinghui Zeng , Yibu Kong , Peng Zhou , Ye Lu

{"title":"Adaptive multi-task convolutional neural network for optical performance monitoring","authors":"Qinghui Zeng , Yibu Kong , Peng Zhou , Ye Lu","doi":"10.1016/j.optcom.2025.131702","DOIUrl":"10.1016/j.optcom.2025.131702","url":null,"abstract":"<div><div>In order to enhance the study of optical communication, we collaboratively monitor modulation format identification (MFI) and optical signal-to-noise ratio (OSNR) estimation using few-shot learning (FSL) and transfer learning techniques. The constellation diagrams were input into the network, with MFI and OSNR classification treated as joint modulation tasks. Utilizing a 16-way-8-shot dataset configuration, the adaptive few-shot transfer learning network (AFTLN) algorithm achieved outstanding performance, attaining 100% accuracy in MFI and 97.29% accuracy in OSNR classification. Ablation studies were conducted on adaptive few-shot meta-learning network (AMCN), adaptive multi-task learning (AMTL), adaptive direct detection network (ADTN), and AFTLN. Notably, only the AFTLN method achieved 100% accuracy in MFI, while its OSNR classification accuracy was approximately 15% higher than that of AMTL. An analysis of the confusion matrix revealed that OSNR classification errors were primarily concentrated around 25 dB for 64QAM and 29 dB for 128QAM. The adaptive weight variation curve was also analyzed, indicating that after approximately 750 epochs, the model primarily concentrated on the first task of MFI. Subsequently, a dataset from optical fibers collected over a distance of 400 km was assembled to validate the feasibility of the proposed algorithms. The classification accuracy for MFI remained at 100%, while the OSNR estimation accuracy was 95.21%, reflecting only a roughly 2% decrease. This demonstrates that the algorithm exhibits strong robustness and is effective in diagnosing optical performance.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131702"},"PeriodicalIF":2.2,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143592392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0