The wavelength-tunable and switchable narrow bandwidth mode-locking operation is demonstrated in an all fiber laser based on semiconductor-saturable absorber mirror （SESAM）. Two narrow-band fiber Bragg gratings cent...The wavelength-tunable and switchable narrow bandwidth mode-locking operation is demonstrated in an all fiber laser based on semiconductor-saturable absorber mirror （SESAM）. Two narrow-band fiber Bragg gratings centered at 1029.9nm and 1032nm respectively with a polarization controller inserted between them are used to realize the wavelength switchable between 1029.9nm and 1032nm. The laser delivers different pulse widths of 7.5ps for 1030nm and 20ps for 1032nm. The maximum output power for both could reach -6.5mW at single pulse operation. The output wavelength couM be tuned to about 0.gnm intervals ranging from 1030.2nm to 1031.1 nm and from 1032.15nm to 1033.7nm with the temperature change of the fiber Bragg grating, respectively.展开更多
文章探讨了城市核心区域和新建住宅区光纤网络优化与部署的策略,旨在提升网络性能、可靠性以及用户体验。通过对这些区域网络现状的分析,提出包括核心层带宽升级、冗余设计、网络分段、汇聚层负载均衡与链路冗余、接入层光纤到楼(Fiber ...文章探讨了城市核心区域和新建住宅区光纤网络优化与部署的策略,旨在提升网络性能、可靠性以及用户体验。通过对这些区域网络现状的分析,提出包括核心层带宽升级、冗余设计、网络分段、汇聚层负载均衡与链路冗余、接入层光纤到楼(Fiber To The Building,FTTB)/光纤到户(Fiber To The Home,FTTH)技术应用、智能网关部署以及服务质量(Quality of Service,QoS)策略实施等具体优化措施。此外,通过详细规划和高质量施工确保布线效率和质量,并通过实时监控和定期巡检保障网络的长期稳定运行和快速故障恢复。这些策略可以解决网络拥堵、延迟以及维护成本高等问题,满足用户对高速、稳定通信的需求。展开更多
基金Supported by the National High Technology Research and Development Program of China under Grant No 2014AA041901NSAF Foundation of the National Natural Science Foundation of China under Grant No U1330134+1 种基金the Opening Project of Shanghai Key Laboratory of All Solid-State Laser and Applied Techniques under Grant No 2012ADL02the National Natural Science Foundation of China under Grant Nos 61308024 and 11174305
文摘The wavelength-tunable and switchable narrow bandwidth mode-locking operation is demonstrated in an all fiber laser based on semiconductor-saturable absorber mirror （SESAM）. Two narrow-band fiber Bragg gratings centered at 1029.9nm and 1032nm respectively with a polarization controller inserted between them are used to realize the wavelength switchable between 1029.9nm and 1032nm. The laser delivers different pulse widths of 7.5ps for 1030nm and 20ps for 1032nm. The maximum output power for both could reach -6.5mW at single pulse operation. The output wavelength couM be tuned to about 0.gnm intervals ranging from 1030.2nm to 1031.1 nm and from 1032.15nm to 1033.7nm with the temperature change of the fiber Bragg grating, respectively.
文摘文章探讨了城市核心区域和新建住宅区光纤网络优化与部署的策略,旨在提升网络性能、可靠性以及用户体验。通过对这些区域网络现状的分析,提出包括核心层带宽升级、冗余设计、网络分段、汇聚层负载均衡与链路冗余、接入层光纤到楼(Fiber To The Building,FTTB)/光纤到户(Fiber To The Home,FTTH)技术应用、智能网关部署以及服务质量(Quality of Service,QoS)策略实施等具体优化措施。此外,通过详细规划和高质量施工确保布线效率和质量,并通过实时监控和定期巡检保障网络的长期稳定运行和快速故障恢复。这些策略可以解决网络拥堵、延迟以及维护成本高等问题,满足用户对高速、稳定通信的需求。
