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	1. A 1.7 nJ 978 nm All-Polarization-Maintaining Ytterbium-Doped Mode-Locked Fiber Laser
	Wang Weijin,Zhou Yue,Zhou Xiangxiang
	Electrics, Communication and Autocontrol Technology 07 March 2024
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	Abstract:We report a core-pumped all-polarization-maintaining (PM) passively mode-locked ytterbium-doped fiber laser operating at 978 nm. All fibers and elements used in this laser have normal dispersion at 978 nm. In this work, 10.7 MHz linear polarized, 1.7 nJ pulses that can be compressed to 234 fs at 978 nm are experimentally obtained. Compared to other all-PM 978 nm fiber lasers, its pulse energy is more than three times higher. Numerical simulations are performed to reveal the pulses\' temporal and spectral evolution inside the cavity. This robust femtosecond laser operating at 978 nm has great potential in biomedical imaging, material processing, and underwater communication.In this paper
	TO cite this article:Wang Weijin,Zhou Yue,Zhou Xiangxiang. A 1.7 nJ 978 nm All-Polarization-Maintaining Ytterbium-Doped Mode-Locked Fiber Laser[OL].[ 7 March 2024] http://en.paper.edu.cn/en_releasepaper/content/4762515


	2. Design and optimization of a more volume-efficient multi-wavelength quantum dot microring laser array on silicon
	HE Weiyu,WANG Jun
	Electrics, Communication and Autocontrol Technology 29 February 2024
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	Abstract:A multi-wavelength microring laser array made by InAs/GaAs quantum dot on silicon was optimized. A new method of changing the mode wavelength of the micro-ring laser is used, that is, the micro-ring laser is radially connected with a rectangular body. The mode wavelength of the micro-ring laser changes steadily from 1290 nm to 1307 nm. This approach offers better volume advantages(94.8% volume savings) and facilitates integration. It can cope with situations where space is limited, or where there is room for expansion in only one direction. The structural parameters of a laser which linked an external rectangle has been numerically optimized. The simulation outcomes reveal a substantial enhancement in optical modality of the microring laser, indicating optimized performance. A stable distributed fundamental mode can be achieved when the outer radius of a microring is set to 5 μm, the width of the microring is 2.4 μm, and the thickness of the cladding layer is 1.40 μm. A high quality factor about 1×105 is achieved by optimization. When the microring laser is changed shape, the mode wavelength range is 1290~1307 nm. Realisation of monolithic silicon integrated multi-wavelength laser arrays is feasible.
	TO cite this article:HE Weiyu,WANG Jun. Design and optimization of a more volume-efficient multi-wavelength quantum dot microring laser array on silicon[OL].[29 February 2024] http://en.paper.edu.cn/en_releasepaper/content/4762342

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	3. Investigating the Feasibility of Modified Uni-Traveling Carrier Photodetector for Use in Next-Generation Data Centers
	LIU Haoran,YUAN Weifang,LIAO Zhuodong,DUAN Xiaofeng,XIAO Chunyang,LIU Qi
	Electrics, Communication and Autocontrol Technology 06 April 2022
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	Abstract:High-bandwidth photodetectors are required for efficient data flow in data centers. Therefore, an electric field-enhanced modified uni-traveling carrier photodetector (EE-MUTC-PD) with a hybrid absorption layer was developed and evaluated in this study. The design entails the application of graded doping to enhance the electric field in the absorption region of the photodetector. This divides the absorption region into a partially depleted sub-region and depleted sub-region, thereby allowing the photogenerated electrons to drift through the absorption layer. The results demonstrate that the proposed EE-MUTC-PD, which has an electric field-enhanced hybrid absorption layer structure, can maintain a high bandwidth under the conditions of low optical power injection. In addition, it was found to exhibit high responsivity, which is useful for next-generation 800-Gb/s optical communication systems.
	TO cite this article:LIU Haoran,YUAN Weifang,LIAO Zhuodong, et al. Investigating the Feasibility of Modified Uni-Traveling Carrier Photodetector for Use in Next-Generation Data Centers[OL].[ 6 April 2022] http://en.paper.edu.cn/en_releasepaper/content/4757278


	4. Research on laser-induced damage threshold of high-purity silica fiber based on thermal effects
	Yingshi Hu,Rundi Zhai,Baonan Jia,Pengfei Lu
	Electrics, Communication and Autocontrol Technology 09 March 2022
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	Abstract:In this paper, laser-induced damage threshold (LIDT) is investigated at the wavelength of 1064 nm in the high-purity silica fiber. The finite element method (FEM) is used to study transmission mode, LIDT and temperature distribution of the fiber. We find that in temperature calculation, results of ray optics is similar with that of wave optics. Both the results show that the center of incident surface is more possible to be damaged. We also characterize the tendency of maximum temperature variation with the increase of laser fluences. Our research can provide systematic FEM simulations for the LIDT of fibers.
	TO cite this article:Yingshi Hu,Rundi Zhai,Baonan Jia, et al. Research on laser-induced damage threshold of high-purity silica fiber based on thermal effects[OL].[ 9 March 2022] http://en.paper.edu.cn/en_releasepaper/content/4756735


	5. High performance filtering and sensing structure based on coupled T-shaped resonator
	SUN Zhuoyue,ZHAO Tonggang,Wang Yusen
	Electrics, Communication and Autocontrol Technology 09 March 2021
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	Abstract:This paper introduces a T-shaped resonator structure which is cross connected by double rectangles and coupled with waveguide. By using COMSOL simulation software based on finite element method, the physical characteristics of the structure are analyzed. The simulation results show that the transmission spectrum of the structure has one Fano peak and one Lorentz peak. Next, the influence of structural parameters on the transmission peak is studied. According to the research results, it can be found that the FR and LR peaks of the structure have excellent band-pass filtering effect. In addition, a new Fano resonance peak is excited by breaking the symmetry of the structure. The FOM value of the FR resonance peak is 210000, it means that the sensing performance of this structure is better than most sensors, which can be used as a high-performance refractive index sensor.
	TO cite this article:SUN Zhuoyue,ZHAO Tonggang,Wang Yusen. High performance filtering and sensing structure based on coupled T-shaped resonator[OL].[ 9 March 2021] http://en.paper.edu.cn/en_releasepaper/content/4754011


	6. A Power-Over-Fiber System with Low Consumption Multi-Sensing for Remote Monitoring Equipment
	Yuemei Li,Zhiguo Zhang,Luming Li,Ziyang Xiao
	Electrics, Communication and Autocontrol Technology 01 February 2021
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	Abstract:In this study, we develop a novel multi-sensing functional system based on Power-Over-Fiber (POF) technique. This system is characterized by its versatility, ultra low energy harvesting and management and remote equipment low consumption. An unusual energy management unit is designed, applied, and realized ultra-low energy collection. We use gallium arsenide as the photoelectric (PV) conversion unit in the system and design intelligent ultra-low power management unit utilization and management the energy of laser power into electricity. It provides a clever idea to solving power requirement of high consumption sensing equipment and promotes the practical application of the POF technology. To using energy more efficiently, a simulation model based on finite elements has been developed for the photovoltaic system. It presents a comprehensive numerical investigation on the effect of the performance of the photovoltaic cell using COMSOL 5.5 Multiphysics software. In addition, it has been used in water monitoring and data transmission stably for a long time.
	TO cite this article:Yuemei Li,Zhiguo Zhang,Luming Li, et al. A Power-Over-Fiber System with Low Consumption Multi-Sensing for Remote Monitoring Equipment[OL].[ 1 February 2021] http://en.paper.edu.cn/en_releasepaper/content/4753652


	7. Effect of Post Thermal Annealing on the Optical Properties of InP/ZnS Quantum Dots Films
	Zhang Bowen,Wei Zhipeng,Fan Xuan,Wang Dengkui,Gao Xian,Fang Dan,Wang Xinwei,Wang Xiaohua,Chen Rui
	Electrics, Communication and Autocontrol Technology 23 January 2018
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	Abstract:The enhancement of optical properties via thermal annealing on InP/ZnS core/shell quantum dots (QDs) film was investigated in this work. The increase of emission intensities of the QDs films was observed after thermal annealing at 180 ℃ for 5 minutes. Through temperature dependence photoluminescence (TDPL) and power dependence photoluminescence (PL) measurement, the peak located at the low-energy shoulder was confirmed to be localized states emission and the high energy one comes from free-carrier emission. Moreover, from the TDPL spectra of the sample anneal at 180 ℃ for 5 minutes, the full width at half maximum (FWHM) of localization states emission was nearly the same before 250 K, and then decreased with increasing temperature. However, the FWHM was decreased significantly with temperature increased in the untreated sample. We conclude that the escape of localization states with increasing temperature contributes to this anomaly phenomenon. Our studies have significance on the application of QDs in electroluminescence or down-conversion light-emitting applications.
	TO cite this article:Zhang Bowen,Wei Zhipeng,Fan Xuan, et al. Effect of Post Thermal Annealing on the Optical Properties of InP/ZnS Quantum Dots Films[OL].[23 January 2018] http://en.paper.edu.cn/en_releasepaper/content/4743297


	8. A Coflow Classifier to Support the Flow Scheduling in Optical Burst Ring Network
	Cao Hong,Wang Cen,Tang Yinan,Guo Junyuan,Guo Hongxiang
	Electrics, Communication and Autocontrol Technology 29 November 2017
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	Abstract:With the rapid development of big data services and distributed computing systems, their network communication performance has been approaching the bottleneck. Unlike the characteristic of end-to-end services in the traditional network, their communication features are characterized by multipoint to multipoint and strong performance association between flows. To solve the communication problem of distributed computing system network, we need to identify and classify these collaborative flows which are named as Coflow, a network abstract concept for collection of flows that share a common performance goal. Meanwhile, relying on the structural advantages of the optical burst ring network, information interacting with low control overhead, and the features of burst switching with fine-grained bandwidth adjustment, we can achieve flow scheduling eventually. Thus the basic optical burst ring network can achieve effective computing system interconnection. This paper aims to extend the optical burst ring network node with a Coflow classifier, so that it can support Coflow\'s classification and scheduling. And through building the FPGA-based network switching platform, our experiments have successfully verified the effectiveness of the extension design.
	TO cite this article:Cao Hong,Wang Cen,Tang Yinan, et al. A Coflow Classifier to Support the Flow Scheduling in Optical Burst Ring Network[OL].[29 November 2017] http://en.paper.edu.cn/en_releasepaper/content/4742464


	9. Gold nanoparticles decorated silicon nanowires thin-film absorbers
	YANG Liu,CHEN Fugen
	Electrics, Communication and Autocontrol Technology 24 April 2017
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	Abstract:We proposed a thin-film absorber based on gold nanoparticles decorated silicon nanowires on thin gold film, with which broadband and enhanced absorption was experimentally demonstrated compared with others without gold nanoparticles or gold film. The high absorption was attributed to not only the top gold nanoparticles, which introduced enhanced light coupling and reduced reflection due to the exciation of surface plasmon polaritons, but also the bottom gold thin film, which greatly suppressed the light transmission.
	TO cite this article:YANG Liu,CHEN Fugen. Gold nanoparticles decorated silicon nanowires thin-film absorbers[OL].[24 April 2017] http://en.paper.edu.cn/en_releasepaper/content/4727028


	10. Performance evaluation of four-wave mixing in a graphene-covered tapered fiber
	JIN Qiang,LU Jiamei,LI Xibin,YAN Qiang,GAO Qianyu,GAO Shiming
	Electrics, Communication and Autocontrol Technology 20 April 2017
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	Abstract:Four-wave mixing in a monolayer graphene-covered tapered fiber is theoretically analyzed by taking into account the influence of graphene layer on the light field distribution. A figure-of-merit (FOM) coefficient considering both the high nonlinearity and the heavy absorption is redefined to evaluate the nonlinear performance. The fiber diameter and length are optimized to acquire a higher FOM. Using such a graphene-covered tapered fiber with an optimal diameter of 0.736 μm, a maximum conversion efficiency of -38.07 dB is numerically obtained for the 1.55-μm pump when the graphene length is 34.4 μm and the peak pump power is 10 W. Moreover, a 3-dB bandwidth as broad as 430 nm can be realized in the 1.55-μm telecommunication band.
	TO cite this article:JIN Qiang,LU Jiamei,LI Xibin, et al. Performance evaluation of four-wave mixing in a graphene-covered tapered fiber[OL].[20 April 2017] http://en.paper.edu.cn/en_releasepaper/content/4725193

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