搜索结果: 1-15 共查到“光通信器件与系统技术 real time”相关记录21条 . 查询时间(0.131 秒)
101.5 Gbit/s Real-Time OFDM Transmitter with 16QAM Modulated Subcarriers
Optical communications Coherent communications
2011/5/25
We demonstrate for the first time a 101.5 Gbit/s single-polarization OFDM transmitter based on real-time FPGA processing. We modulate 58 subcarriers with 16QAM.
Real-time IQ Imbalance Compensation for Coherent Optical OFDM Transmission
Fiber optics links and subsystems Coherent communications
2011/5/25
A FPGA-based receiver side (Rx) IQ imbalance compensation scheme for 10.7-Gb/s 16-QAM CO-OFDM transmission is demonstrated in real time. The compensation scheme performs better with the increase of OS...
Real-time Gigabit Ethernet bidirectional transmission over a single SI-POF up to 75 meters
Fiber optics communications Optical Communications
2011/5/25
In this paper we demonstrate 1Gb/s bidirectional transmission over a single SI-POF,over the record distance of 75m. We successfully tested our system running real time Gigabit Ethernet traffic generat...
Real-Time FPGA-Based Intradyne Coherent Receiver for 40 Gbit/s Polarization-Multiplexed 16-QAM
Coherent communications Optical communications
2011/5/25
Real-time detection of a 40 Gbit/s polarization-multiplexed square 16-QAM signal is demonstrated in an FPGA-based intradyne coherent receiver processing 100% of data. A minimum BER of 3.3×10 -5 is ach...
Real-time FPGA-based Coherent Optical Receiver for 1 Gsymbol/s, 64 QAM Transmission
Coherent communications Fiber optics communications
2011/5/25
We demonstrated the first time real-time FPGA-based coherent optical receiver for a 64 QAM transmission. Error free performance (BER < 1x10 -12 ) was achieved under a back-to-back condition and the BE...
Real-Time Optical OFDM Transceivers for PON Applications
Fibre Optical Communications Modulation Fibres single mode
2011/5/25
Recent real-time optical OFDM (OOFDM) research progress is reviewed extensively in terms of adaptive transceiver design, intensity modulators, synchronisation techniques and network architectures. Res...
Real-Time Evaluation of Optical Nonlinear Effects on 112Gbps PM-QPSK Signal in Dispersion Managed Links
Optical Communications Coherent Communications
2011/5/20
We demonstrate the impact of nonlinear effects on dispersion managed links with a FPGA-based 112Gbps real-time receiver. We clarify that PM-RZ-QPSK provides superior robustness, whereas PM-NRZ-QPSK of...
First Experimental Demonstration of Low-Cost VCSEL- Intensity Modulated End-to-End Real-Time Optical OFDM Signal Transmission at 11.25Gb/s over 25km SSMFs
VCSEL Intensity Modulated OFDM Signal Transmission
2011/5/20
Low-cost, narrow modulation bandwidth, un-cooled VCSELs can be utilized to directly modulate 64-QAM-encoded 11.25Gb/s signals for end-to-end real-time optical OFDM transmission over 25km SSMF IMDD sys...
Experimental Demonstration of Adaptive Bit and/or Power Loading for Maximising Real-Time End-to-End Optical OFDM Transmission Performance
Adaptive Bit Real-Time End-to-End Optical OFDM Transmission Performance
2011/5/15
For the first time adaptive bit and/or power loading of real-time, end-to-end optical OFDM transceivers are experimentally demonstrated and compared. Low-complexity power loading only results in a pen...
200Gs/s Real-time Optical-Sampling-based Orthogonal Frequency Division Multiplexing System
Fiber optics communications Multiplexing
2010/6/10
An all-optical orthogonal frequency division multiplexing scheme with 200GSample/s optical sampling technique is proposed and experimentally demonstrated. 50Gb/s AO-OFDM data is successfully transmitt...
Digital Equalization of Ultrafast Data Using Real-time Burst Sampling
Fiber optics links subsystems Radio frequency photonics
2010/6/9
We demonstrate digital equalization of 40Gbps data enabled by use of Real-time Burst Sampling (RBS) with photonic time-stretch A/D converter. Evaluation of a feed-forward equalizer and a decision feed...
End-to-End Real-Time Demonstration of 128-QAM- Encoded Optical OFDM Transmission with a 5.25bit/s/Hz Spectral Efficiency over IMDD Systems
Fiber optic communications Modulation Fibres single mode
2010/6/8
Real-time optical OFDM transceivers with 128-QAM encoding are experimentally demonstrated, for the first time, which enable 5.25Gb/s end-to-end transmission with the highest spectral efficiency of 5.2...
Towards Real-Time Implementation of Optical OFDM Transmission
Coherent communications Fiber optics communication
2010/6/8
We review the progresses made towards real-time implementation of optical OFDM, with emphasis on the needed digital signal processing (DSP). Various OFDM procedures and algorithms are discussed in the...
Digital Optical Phase Locked Loop for Real-Time Coherent Demodulation of Multilevel PSK/QAM
Optical communications Coherent communications
2010/6/8
We propose a digital optical phase locked loop (DOPLL) for real-time demodulation of high-speed multilevel PSK/QAM. It was simply implemented using low-speed digital signal processor after electrical ...
Colourless Real-Time Optical OFDM End-to-End Transmission at 7.5Gb/s over 25km SSMF Using 1GHz RSOAs for WDM-PONs
Fiber optic communications Modulation Fibres single mode
2010/6/8
Colourless real-time 16-QAM optical OFDM end-to-end transmission at 7.5Gb/s over 25km SSMF is demonstrated experimentally, for the first time, using variable power loading and live-optimised RSOA inte...