Journal of Lightwave Technology最新文献_第10页

Shared Carrier Phase Recovery of Wavelength- and Space-Division Multiplexed Channels Enabled by CW-Seeded Parametric Optical Frequency Combs 基于cw种子的参数光频梳实现波分空分复用信道的共享载波相位恢复

IF 4.8 1区工程技术

Journal of Lightwave Technology Pub Date : 2025-12-03 DOI: 10.1109/JLT.2025.3639822

Daniele Orsuti;Benjamin J. Puttnam;Ruben S. Luís;Manuel S. Neves;Divya A. Shaji;Budsara Boriboon;Robson A. Colares;Darli A. A. Mello;Georg Rademacher;Cristian Antonelli;Paulo P. Monteiro;Fernando P. Guiomar;Jun Sakaguchi;Luca Palmieri;Hideaki Furukawa

{"title":"Shared Carrier Phase Recovery of Wavelength- and Space-Division Multiplexed Channels Enabled by CW-Seeded Parametric Optical Frequency Combs","authors":"Daniele Orsuti;Benjamin J. Puttnam;Ruben S. Luís;Manuel S. Neves;Divya A. Shaji;Budsara Boriboon;Robson A. Colares;Darli A. A. Mello;Georg Rademacher;Cristian Antonelli;Paulo P. Monteiro;Fernando P. Guiomar;Jun Sakaguchi;Luca Palmieri;Hideaki Furukawa","doi":"10.1109/JLT.2025.3639822","DOIUrl":"https://doi.org/10.1109/JLT.2025.3639822","url":null,"abstract":"We demonstrate a phase-coherent transmission system supported by the transmission of a seed lightwave in a dedicated multi-core fiber (MCF) core used as a reference for parametric optical frequency comb (OFC) generation at both the transmitter and receiver. We exploit the phase coherence of the wavelength/space-division multiplexed channels to implement a shared digital signal processing (DSP) scheme that reduces the complexity of carrier phase recovery (CPR). In the scheme, the carrier phase noise estimated from a small set of reference channels is used to recover other channels across both wavelengths and cores. The system performance is evaluated over transmission distances of up to 176 km in a 4-core MCF, showing that just 6 reference channels enable CPR of 3 (cores)<inline-formula><tex-math>$times 150times$</tex-math></inline-formula>24.5-GBaud polarization-multiplexed 64-ary quadrature amplitude modulation C-band channels, with data-rates >30 Tb/s/core. This is achieved with <0.5 dB Q-factor compared to independent CPR. The results demonstrate the potential of OFC-based MCF systems for high-capacity, short- to medium-reach optical interconnects with reduced hardware requirements and simplified DSP.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"44 3","pages":"1113-1124"},"PeriodicalIF":4.8,"publicationDate":"2025-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146071184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Effective Inscription of Fiber Bragg Gratings With High Reflectivity by Femtosecond Laser and Ring-by-Ring Method in Ring Core Fiber 用飞秒激光和逐环法在环芯光纤中有效刻蚀高反射率光纤布拉格光栅

IF 4.8 1区工程技术

Journal of Lightwave Technology Pub Date : 2025-12-03 DOI: 10.1109/JLT.2025.3639810

Binchuan Sun;Ziyi Zhao;Shan Huang;Yu Liu;Jianjun Wang;Changle Shen;Dexing Yang;Jianlin Zhao;Yajun Jiang;Rumao Tao

{"title":"Effective Inscription of Fiber Bragg Gratings With High Reflectivity by Femtosecond Laser and Ring-by-Ring Method in Ring Core Fiber","authors":"Binchuan Sun;Ziyi Zhao;Shan Huang;Yu Liu;Jianjun Wang;Changle Shen;Dexing Yang;Jianlin Zhao;Yajun Jiang;Rumao Tao","doi":"10.1109/JLT.2025.3639810","DOIUrl":"https://doi.org/10.1109/JLT.2025.3639810","url":null,"abstract":"Fiber Bragg gratings (FBGs) with significantly enhanced reflectivity in ring-core fibers (RCFs) were successfully inscribed by using a high-repetition-rate femtosecond laser and the ring-by-ring (RbR) method. In comparison to FBGs with very low reflectivity produced in RCF through point-by-point or line-by-line methods, those inscribed via the RbR method exhibit an improved reflectivity of up to 80% . This enhancement is attributed to the alignment of the refractive index modulation trajectory with the mode field distribution of the RCF. To further increase the overlap area, a multi-layer RbR method was employed, achieving near-complete coverage of the fiber core and thereby enhancing the reflectivity to 98.8% . Although the signal-to-noise ratio of the FBGs reaches over 30 dB, due to the strong high-frequency components in the frequency domain of the uniform refractive index modulation, the side-mode suppression ratio (SMSR) is less than 10 dB. Therefore, two novel apodization techniques – one involving diameter variation and the other arc-length variation – which are compatible with the RbR method are proposed and demonstrated. By precisely controlling the diameters or arc-lengths of each ring induced by femtosecond laser, diverse apodization modulation profiles can be achieved to inscribe apodized FBGs with a SMSR of more than 25 dB. Four types of FBGs using different apodization functions were compared and analyzed, the experimental results show that the Gaussian function has the optimal apodization effect.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"44 4","pages":"1522-1531"},"PeriodicalIF":4.8,"publicationDate":"2025-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Novel Wavelength Distribution Nodes Based on Photonic Integrated EDWA and SOA-Based WSS for Metro-Access Networks 基于光子集成EDWA和基于soa的城域网WSS的新型波长分布节点

IF 4.8 1区工程技术

Journal of Lightwave Technology Pub Date : 2025-12-02 DOI: 10.1109/JLT.2025.3639416

Shiyi Xia;Carlos E. Osornio-Martinez;Dawson B. Bonneville;Aaron Albores-Mejia;Boyang Zheng;Ryosuke Matsumoto;Oded Raz;Sonia M. García-Blanco;Nicola Calabretta

{"title":"Novel Wavelength Distribution Nodes Based on Photonic Integrated EDWA and SOA-Based WSS for Metro-Access Networks","authors":"Shiyi Xia;Carlos E. Osornio-Martinez;Dawson B. Bonneville;Aaron Albores-Mejia;Boyang Zheng;Ryosuke Matsumoto;Oded Raz;Sonia M. García-Blanco;Nicola Calabretta","doi":"10.1109/JLT.2025.3639416","DOIUrl":"https://doi.org/10.1109/JLT.2025.3639416","url":null,"abstract":"This paper presents an experimental investigation of a scalable, reconfigurable wavelength distribution node (WDN) architecture for next-generation optical metro-access networks, capable of dynamically routing coherent Wavelength Division Multiplexing (WDM) channels at multi-Tbps levels, with 800 Gbps per channel. The proposed architecture leverages novel photonic integrated erbium-doped waveguide amplifiers (EDWAs) combined with Semiconductor Optical Amplifier (SOA)-based 1×N Wavelength Selective Switches (WSS), facilitating dynamic add/drop capabilities essential for flexible metro-access deployments. Three experiments validated the architecture’s transmission performance and scalability. The first experiment demonstrated successful add/drop and drop&continue dynamic switching of six 800 Gbps WDM channels, achieving an aggregate throughput of 4.8 Tbps with an average Optical Signal-to-Noise Ratio (OSNR) degradation of only 0.55 dB after one node, and 2.4 dB after cascading two nodes over a 55.2 km link. The second experiment confirmed error-free transmission of eight 800 Gbps WDM channels, recording a maximum OSNR penalty variation among channels of 3.56 dB. The third experiment evaluated scalability using a 1×4 for WDN1, 1×16 WSS for WDN2 configuration, achieving error-free transmission serving up to 64 access points at 800 Gbps per channel, with a cumulative OSNR penalty of 7.44 dB after cascading two WDN nodes. These results demonstrate the feasibility and high performance of integrated photonic solutions in meeting future 6G network demands.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"44 3","pages":"1159-1166"},"PeriodicalIF":4.8,"publicationDate":"2025-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146071181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Polarization-Insensitive Fiber Optical Parametric Amplifier With Noise Figure Down to 4.4 dB Enabled by Mach–Zehnder Architecture 采用马赫-曾达结构实现噪声系数低至4.4 dB的偏振不敏感光纤参量放大器

IF 4.8 1区工程技术

Journal of Lightwave Technology Pub Date : 2025-12-01 DOI: 10.1109/JLT.2025.3638962

Florent Bessin;Filipe M. Ferreira;Nick J. Doran;Vladimir Gordienko

引用次数: 0

Octave-Spanning Supercontinuum Generation in Dispersion-Engineered Stacked Waveguides 色散堆叠波导中跨八度超连续谱的产生

IF 4.8 1区工程技术

Journal of Lightwave Technology Pub Date : 2025-11-28 DOI: 10.1109/JLT.2025.3638737

Hsin-Han Peng;Po-Hung Wu;De-Hao Yan;Guan-Hong Li;Siyao Li;Min-Hsiung Shih;Bo-Huei Liao;Chien-Nan Hsiao;Yi-Jen Chiu;Siheng Chen;Chao-Kuei Lee;Hsiang-Chen Chui

{"title":"Octave-Spanning Supercontinuum Generation in Dispersion-Engineered Stacked Waveguides","authors":"Hsin-Han Peng;Po-Hung Wu;De-Hao Yan;Guan-Hong Li;Siyao Li;Min-Hsiung Shih;Bo-Huei Liao;Chien-Nan Hsiao;Yi-Jen Chiu;Siheng Chen;Chao-Kuei Lee;Hsiang-Chen Chui","doi":"10.1109/JLT.2025.3638737","DOIUrl":"https://doi.org/10.1109/JLT.2025.3638737","url":null,"abstract":"Stacked waveguide structures, consisting of alternating tantalum pentoxide (Ta2O5) nonlinear films and silicon dioxide (SiO2) interlayers, enable precise dispersion engineering by flattening the group-velocity dispersion (GVD) curve and extending the anomalous dispersion regime. In this work, we designed and fabricated a multilayer Ta2O5/SiO2 composite waveguide using electron-beam deposition and CMOS-compatible processing. Simulations confirmed that the stacked geometry reduced higher-order dispersion terms and provided an extended anomalous dispersion window compared with conventional single-layer waveguides. Experimentally, supercontinuum generation (SCG) was achieved using femtosecond pumping at 1030 nm, yielding a flatter and more uniform spectral profile across the near-infrared. Under 1550 nm femtosecond excitation, the stacked waveguide produced a broadband spectrum spanning ∼1.3 octaves at the 30 dB energy level—the widest SCG bandwidth reported from a stacked geometry to date. These findings establish that stacked dispersion engineering not only enhances spectral flatness but also maximizes usable bandwidth, demonstrating a scalable and CMOS-compatible route toward compact broadband light sources for high-speed optical communication and integrated photonics.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"44 4","pages":"1439-1444"},"PeriodicalIF":4.8,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

100-Tb/s-Class Long-Haul Transmission in Triple-Band WDM With Forward- and Backward-Pumped Distributed Raman Amplifications 前向和后向抽运分布式拉曼放大的三波段WDM 100tb /s级长距离传输

IF 4.8 1区工程技术

Journal of Lightwave Technology Pub Date : 2025-11-28 DOI: 10.1109/JLT.2025.3638649

Fukutaro Hamaoka;Kosuke Kimura;Masanori Nakamura;Takeo Sasai;Takayuki Kobayashi;Yutaka Miyamoto;Etsushi Yamazaki

引用次数: 0

External Photobleaching Enhanced Radiation-Hardened Raman Distributed Temperature Sensor 外光漂白增强辐射硬化拉曼分布温度传感器

IF 4.8 1区工程技术

Journal of Lightwave Technology Pub Date : 2025-11-27 DOI: 10.1109/JLT.2025.3637897

Gukbeen Ryu;Jongyeol Kim;Younggwan Hwang;Young Ho Kim;Joo-Young Lee;Youngwoong Kim

引用次数: 0

Compact Monolithic 8-Wavelength DFB Laser Array Based on Enhanced Self-Heating Effect for Widely Tunable Continuous-Wave Terahertz Signal Generation 基于增强自热效应的紧凑单片8波长DFB激光器阵列用于宽可调谐太赫兹连续波信号的产生

IF 4.8 1区工程技术

Journal of Lightwave Technology Pub Date : 2025-11-27 DOI: 10.1109/JLT.2025.3638330

Yue Zhang;Zhuoying Wang;Jiale Xu;Wenjian Huang;Zhenxing Sun;Rulei Xiao;Xiangfei Chen

{"title":"Compact Monolithic 8-Wavelength DFB Laser Array Based on Enhanced Self-Heating Effect for Widely Tunable Continuous-Wave Terahertz Signal Generation","authors":"Yue Zhang;Zhuoying Wang;Jiale Xu;Wenjian Huang;Zhenxing Sun;Rulei Xiao;Xiangfei Chen","doi":"10.1109/JLT.2025.3638330","DOIUrl":"https://doi.org/10.1109/JLT.2025.3638330","url":null,"abstract":"We propose and experimentally demonstrate a compact monolithic 8-wavelength distributed feedback (DFB) laser array for broadband, continuously tunable continuous-wave (CW) terahertz (THz) generation. The lasers are arranged in a parallel configuration, with outputs combined through a three-stage Y-branch combiner and amplified by an integrated semiconductor optical amplifier (SOA) to enhance power. The DFB gratings are fabricated using the reconstruction equivalent chirp (REC) technique for precise phase control, while the enhanced self-heating effect, achieved by optimizing the p-cladding doping concentration, increases the current-induced wavelength tunability. Anti-reflection (AR) coatings are applied on both cavity facets to improve single-mode yield. Experimental results show output powers exceeding 10 mW per wavelength, individual wavelength tuning ranges over 6.3 nm, a total tuning span exceeding 50 nm, linewidths below 3.4 MHz, and side-mode suppression ratios (SMSRs) above 40 dB. Dual-wavelength operation achieves tunable wavelength spacing of 5.49–48.5 nm, corresponding to 0.69–6.09 THz, demonstrating high stability and compactness for integrated THz applications.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"44 4","pages":"1454-1460"},"PeriodicalIF":4.8,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Unraveling Period-Doubling Bifurcations in Figure-of-9 Lasers via an Energy Transmission Model: From Cascaded Periodic States to Chaos 通过能量传输模型揭示9形激光中的倍周期分岔：从级联周期态到混沌

IF 4.8 1区工程技术

Journal of Lightwave Technology Pub Date : 2025-11-27 DOI: 10.1109/JLT.2025.3637895

Xiangchen Kong;Xiyao Liu;Taoran Le;Chao Huang;Qingzhao Yang;Chun Li;Yan Li;Haoyun Wei

引用次数: 0

Solitary Chaotic Semiconductor Laser Diode for Parallel Random Number Generation and Optical Decision Making 用于并行随机数生成和光学决策的孤立混沌半导体激光二极管

IF 4.8 1区工程技术

Journal of Lightwave Technology Pub Date : 2025-11-27 DOI: 10.1109/JLT.2025.3638423

Jiacheng Li;Fei Wang;Tao Deng

{"title":"Solitary Chaotic Semiconductor Laser Diode for Parallel Random Number Generation and Optical Decision Making","authors":"Jiacheng Li;Fei Wang;Tao Deng","doi":"10.1109/JLT.2025.3638423","DOIUrl":"https://doi.org/10.1109/JLT.2025.3638423","url":null,"abstract":"Optical chaos is crucial in various applications, such as image encryption, secure communications, anti-jamming sensing, light detection and ranging, and reinforcement learning. External optical feedback represents the predominant configuration in laser diode chaos applications. However, various fixed external cavities introduce significant time delay signatures. The previously reported self-chaotic laser effectively addresses this issue; however, its utilization is limited due to the restricted number of output modes. In this paper, we propose a solitary chaotic comb source based on multimode interaction in a laser diode, providing 173 chaotic comb lines within a 100 nm spectral range, with a channel effective bandwidth of up to 8.4 GHz. The channels cross-correlation is consistently below 0.08, satisfying the orthogonality criteria. This scheme can generate an offline random number sequence with an expected data throughput of 32 Tbits/s and can resolve at least 256 multi-armed bandit issues. We have successfully opened a new way to develop low-cost, massively integrated, parallel chaotic comb sources, and this technology possesses the potential to revolutionize entire chaotic application systems.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"44 4","pages":"1420-1429"},"PeriodicalIF":4.8,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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