搜索结果: 1-15 共查到“光学工程 Tb”相关记录26条 . 查询时间(0.093 秒)
复旦大学实现Tb/s全光奈奎斯特信号远距离传输
复旦大学 Tb/s全光奈奎斯特信号 远距离传输
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2015/10/29
复旦大学信息科学与工程学院通信系研究团队实现了偏振复用全光奈奎斯特信号的长距离传输，并首次成功实现了1Tb/s全光奈奎斯特信号全通带相干探测。相关研究成果日前发表于《科学报告》。此次的成果由博士张俊文、国家“千人计划”教授余建军和教授迟楠研究团队完成。
High Capacity Field Trials of 40.5 Tb/s for LH Distance of 1,822 km and 54.2 Tb/s for Regional Distance of 634 km
High Capacity Field Trials 40.5 Tbs for LH Distance of 1,822 km 54.2 Tbs for Regional Distance 634 km
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2014/11/6
40.5 Tb/s over 1,822km and 54.2 Tb/s over 634km field SSMF was realized using 41 Nyquist rate DP-8QAM and DP-16QAM superchannels. They are the highest field capacities for long-haul and regional dista...
Ca3(PO4)2:RE3+ (RE=Eu,Dy,Ce,Tb) 荧光粉的制备及其发光特性
材料 荧光粉 高温固相法 磷酸盐基质 白光LED
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2013/10/15
采用高温固相法合成了Ca3(PO4)2:RE3+(RE = Eu, Dy, Ce, Tb)系列发光材料，研究了其发光性质。研究表明Ca3(PO4)2: RE3+ 在紫外区域均能有效被激发，有很强的荧光发射，且发光范围覆盖蓝到红光波段，是一类可以紫外激发实现白光LED用的潜在荧光粉。在0.005到0.03 mol 浓度范围内，Eu，Dy和Ce掺杂的荧光粉的发光都发生了浓度淬灭，分别对应于0.025，...
氟氧化物纳米相玻璃陶瓷Tb(0.7)Yb(5)∶FOV的合作下转换发光
红外量子剪裁 太阳能电池 氟氧化物纳米相玻璃陶瓷Tb(0.7)Yb(5)∶FOV
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2012/4/13
报道了氟氧化物纳米相玻璃陶瓷Tb(0.7)Yb(5)∶FOV的红外量子剪裁研究，测量了从可见到红外的荧光发光光谱、激发谱、和荧光寿命，分析了{1([5D4→7F6](Tb3+), 2([2F7/2→2F5/2](Yb3+)}的红外量子剪裁现象，发现了487.0 nm光激发5D4能级和378.0 nm光激发(5D3, 5G6)能级的理论量子剪裁效率ηｘ%Yb依次分别为121.35%和136.27%。...
Generation of Stable and High-Quality Multicarrier Source Based on Re-circulating Frequency Shifter for Tb/s Optical Transmission
Fiber optics communications Frequency modulation
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2015/5/25
We theoretically and experimentally study the impact of implementation imperfections on the quality of multicarrier sources generated by re-circulating frequency shifting. Based on an optimized design...
2.1-Tb/s·km OFDM Long-Reach PON Transmission using a Cost-Effective Electro-Absorption Modulator
2.1-Tb/s·km OFDM Long-Reach PON Transmission Cost-Effective Electro Absorption Modulator
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2015/5/20
We experimentally demonstrate a superior performance of 2.1-Tb/s·km OFDM-signal transmission over 100-km long-reach PONs, which is achieved by using an EAM and direct-detection, and adopting the 128-Q...
Significant Overhead Reduction of Multi-band Tb/s Coherent Optical OFDM Systems
Multi-band Tb/s Coherent Optical OFDM Systems Overhead Reduction
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2015/5/15
The timing and optical laser phase of individual bands in multi-band OFDM are correlated. We significantly reduce the OFDM overhead through using FFT window synchronization for channel estimation and ...
1-Tb/s Large Girth LDPC-Coded Coherent Optical OFDM Transmission over 1040-km Standard Single-Mode Fiber
Large Girth LDPC-Coded Coherent Optical OFDM Standard Single-Mode Fiber
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2015/5/15
We experimentally demonstrate 1-Tb/s CO-OFDM transmission over 1040-km standard single-mode fiber using 50% overhead girth-12 LDPC-coded 16-QAM. More than 4-dB improvement in OSNR sensitivity is achie...
氟氧化物纳米相玻璃陶瓷Tb(0.7)Yb(5)∶FOV的合作下转换发光
红外量子剪裁 太阳能电池 氟氧化物纳米相玻璃陶瓷Tb(0.7)Yb(5)∶FOV
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2012/4/19
报道了氟氧化物纳米相玻璃陶瓷Tb(0.7)Yb(5)∶FOV的红外量子剪裁研究，测量了从可见到红外的荧光发光光谱、激发谱、和荧光寿命，分析了{1([5D4→7F6](Tb3+), 2([2F7/2→2F5/2](Yb3+)}的红外量子剪裁现象，发现了487.0 nm光激发5D4能级和378.0 nm光激发(5D3, 5G6)能级的理论量子剪裁效率ηｘ%Yb依次分别为121.35%和136.27%。...
1-Tb/s DWDM Amplification in a Fiber Optical Parametric Amplifier
Parametric oscillators amplifiers Fiber optics communications
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2015/6/10
We report less than 1-dB cross-talk penalty for 26 DWDM channels modulated at 43.7 Gb/s RZ-DPSK when amplified by a fiber optical parametric amplifier showing compatibility with high-capacity (> 1 Tb/...
1.28 Tb/s Wavelength Conversion for Polarisation Multiplexed RZ-DPSK Signals
Fiber optics communications Wavelength conversion devices
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2015/6/10
All-optical wavelength conversion for single wavelength channel 1.28-Tb/s polarisation multiplexed RZ-DPSK signals was demonstrated using a 100-m polarisation-maintaining highly nonlinear fibre (PM-HN...
Efficient Digital Coherent Detection of A 1.2-Tb/s 24- Carrier No-Guard-Interval CO-OFDM Signal by Simultaneously Detecting Multiple Carriers Per Sampling
Coherent communications Phase modulation
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2015/6/10
We experimentally demonstrate efficient detection of a 1.2-Tb/s 24-carrier NGI-CO-OFDM signal with 12.5-Gbaud PDM-QPSK carrier-modulation by simultaneously recovering 2 or 3 carriers per 50-GSamples/s...
Optical Frame Synchronizer for 10 G Ethernet Packets aiming at 1 Tb/s OTDM Ethernet
Fiber optics communications All-optical networks
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2015/6/4
Synchronization of 10 G Ethernet packets to a local clock was demonstrated using a phase modulator and a SMF as retiming elements. Error free performances for the synchronized packets with different l...
为了提高稀土有机配合物的转光能力和紫外稳定性，以Ｓｍ（Ⅲ）为中心稀土离子，Ｔｂ为敏化离子，β二酮类有机配体α噻吩甲酰三氟丙酮（ＨＴＴＡ）及第二配体１，１０菲咯啉（ｐｈｅｎ）等作为主要配体，采用化学沉淀法合成了具有紫外转红光性能的转光剂Ｓｍ１－狓Ｔｂ狓（ＴＴＡ）３ｐｈｅｎ，并利用ＳｉＯ２ 对配合物进行了表面改性．借助红外光谱、紫外可见光吸收光谱及荧光光谱对配合物Ｓｍ１－狓Ｔｂ狓（ＴＴＡ）３ｐｈ...
采用sol-gel法制备了稀土Tb3+掺杂的SiO2发光干凝胶，对样品微观结构和发光性能进行了表征，研究了含水量对样品荧光强弱，磷光特性，发光衰减等的影响。结果表明：当溶液中正硅酸乙酯、无水乙醇、蒸馏水配比为1∶4∶4时，650 ℃退火样品的发光最强，当配比为1∶4∶5时，750 ℃退火样品的发光最强，当配比为1∶4∶6时，850 ℃退火样品的发光最强。随着含水量的增加，经750 ℃退火处理的样品...