搜索结果: 1-15 共查到“EDFA”相关记录18条 . 查询时间(0.062 秒)
146λ××6××19-Gbaud Wavelength- and Mode-Division Multiplexed Transmission over 10××50-km Spans of FewMode Fiber with a Gain-Equalized Few-Mode EDFA
146λ××6××19-Gbaud Wavelength Mode-Division Multiplexed Transmission over 10××50-km Few Mode Fiber Gain-Equalized Few-Mode EDFA
2014/11/6
We demonstrate wavelength- and mode-division multiplexed transmission over a fiber re-circulating loop comprising 50-km of low-DMGD few-mode fiber, and an optimized few-mode EDFA with a flat gain spec...
117-Gb/s Optical OFDM Super-channel Transmission over 1200-km SSMF Using Direct Detection and EDFA-Only Amplification
Fiber optics communications Modulation
2015/5/22
With EDFA-only amplification, we successfully demonstrate the transmission of a 4-QAM, 117-Gb/s (100 Gb/s without overhead) DDO-OFDM super-channel over 1200-km SSMF with only 1-dB OSNR penalty. We als...
Maximum Reach of Long-Reach RSOA-Based WDM PON Employing Remote EDFA
)Fiber optics links subsystems Semiconductor optical amplifiers
2015/5/20
We investigate the effects of the gain and position of the remote EDFA in a long-reach RSOA-based WDM PON. Using this result, we also estimate the maximum transmission reach limited by Rayleigh backsc...
Less than 0.19-dB Transient Gain Excursion AGC-EDFA with Digital Control for 20-Channel Add/Drop Equivalent Operation
Transient Gain Excursion AGC-EDFA Digital Control 20-Channel Add/Drop
2015/5/20
We have developed a digitally controlled AGC-EDFA by combining an FF-controlled pump-LD and an FB-controlled VOA. An FPGA is used to finely tune the gain setting of the pump current with a wide dynami...
432Gbit/s O-OFDM QPSK signal transmission over 400km SMF-28 with EDFA-only amplification
O-OFDM QPSK signal transmission
2015/5/15
432Gbit/s O-OFDM QPSK transmitter has been proposed and experimentally demonstrated.After transmission over 400km standard single-mode fiber (SMF), the measured BER is smaller than 2 ×10 -5 .
卫星光通信中空间辐射对EDFA性能的影响分析
掺铒光纤放大器 伽马辐射 空间环境 卫星光通信
2009/10/26
由于光纤类器件对于辐射十分敏感，考虑到卫星光通信特定的辐射环境，要想采用地面已非常成熟的外调制技术，必须分析外调制技术中的核心器件EDFA在其中的可行性。采用60Co作为辐射源，国内首次对EDFA及其内部重要组件隔离器和WDM耦合器进行了高剂量轨道和低剂量轨道辐照模拟实验，实验结果表明在总剂量为5krad的低剂量辐照情况下，EDFA在-2dBm的输入时，输出功率由辐照前的14.3dBm下降到14...
线性啁啾长周期光纤光栅用作EDFA增益平坦滤波器的理论研究
长周期光纤光栅 掺铒光纤放大器 啁啾
2009/9/15
提出用具有特定折射率调制包络的线性啁啾长周期光纤光栅作为掺铒光纤放大器(EDFA)的增益平坦滤波器.采用龙格库塔迭代法数值求解该类型光栅耦合模方程，就特定的掺铒光纤放大器增益谱，用Nelder-Mead优化算法对光栅结构参量(光栅长度、周期、线性啁啾系数、折射率调制包络的形状等)进行优化，设计出能在C波段35 nm带宽范围内对掺铒光纤放大器进行平坦化(增益起伏在±0.5 dB之内)的平坦滤波器.
SOA or EDFA Amplifying 10Gbit/s OFDM Signals for Access Networks
SOA EDFA Amplifying OFDM Signals Access Networks
2015/7/20
An OFDM transmission system is amplified through SOA or EDFA to provide an access network at 10Gbit/s with increased optical budgets. Bit-rate optimization and BER measurement characterize amplifier's...
Polarization Multiplexed 20 Gbaud Square 16QAM Long-Haul Transmission over 1120 km using EDFA Amplification
Polarization Multiplexed Transmission EDFA Amplification
2015/7/16
Single-channel transmission of 20 Gbaud single-polarization / polarization multiplexed Square 16QAM at bitrates of 80 /160 Gbit/s is experimentally demonstrated over record distances of 1300 / 1120 km...
Performance of an Advanced Transient Suppressed EDFA in Diverse Dynamic Optical Network Scenarios
Advanced Transient Suppressed EDFA Dynamic Optical Network Scenarios
2015/7/15
We extend the study of an advanced transient-suppressed EDFA to wider timescales and investigate its performance as a function of network reconfiguration-time and required optical-feedback power, demo...
17 Tb/s (161×114 Gb/s) PolMux-RZ-8PSK transmission over 662 km of ultra-low loss fiber using C-band EDFA amplification and digital coherent detection
PolMux-RZ-8PSK transmission ultra-low loss fiber C-band EDFA amplification
2015/8/6
Employing PolMux-RZ-8PSK modulation and coherent detection, we demonstrate 25 GHz-spaced, 161 ? 114 Gb/s DWDM transmission through eight spans of ultra-low-loss fiber (average span length/loss of 82.7...
20× ×112Gbit/s, 50GHz spaced, PolMux-RZ-QPSK straight-line transmission over 1540km of SSMF employing digital coherent detection and pure EDFA amplification
PolMux-RZ-QPSK SSM digital coherent detection EDFA amplification
2015/8/3
By using PolMux-RZ-QPSK modulation format and digital coherent detection, we have demonstrated 20×112Gbit/s DWDM transmission over 1540km of SSMF without using Raman amplification or optical dispersio...
采用改进的模拟退火算法对Raman/EDFA混合放大器的增益谱进行了优化，根据EDFA及Raman的功率传播方程获得了简洁的目标函数.通过对模拟退火算法几个优化环节的改进，使其能够更快速地应用于Raman/EDFA的多峰值问题的优化设计，可以在短时间内获得最优的放大器参量.计算结果表明选择合适的喇曼抽运波长和抽运功率，仅用4个反向抽运的分布式喇曼放大器加C波段的EDFA就可以获得C+L波段约70 ...
本文通过运用Giles模型对L-band EDFA在不同泵浦波长下的增益、不同泵浦功率与光纤长度的关系以及各种增益特性等进行了数值模拟,并同时辅以C-band EDFA进行比较计算,从理论上对L-band EDFA的特性进行了较为详细的分析说明,并得出了新颖的结论.
长周期光纤光栅光谱控制及其在EDFA增益平坦中的应用
2007/8/20
从理论上分析了长周期光纤光栅光谱的控制方法,并且进行了实验研究.结果表明,选择合适周期的振幅模板,通过控制曝光量和光栅长度,可以实现对长周期光纤光栅的中心波长、峰值和带宽的控制.用此技术制作的四个不同中心波长、峰值和带宽的长周期光纤光栅级联,实现了EDFA在35.6 nm范围内增益波动小于±0.6 dB.