搜索结果: 76-90 共查到“工学 QPSK”相关记录107条 . 查询时间(0.036 秒)
Experimental Comparison of Nonlinear Compensation in Long-Haul PDM-QPSK Transmission at 42.7 and 85.4 Gb/s
Nonlinear Compensation Long-Haul PDM-QPSK Transmission
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2015/7/20
We compare the nonlinear limits of 42.7 and 85.4 Gb/s PDM-QPSK transmission. Intra-channel nonlinearity compensation is demonstrated, with increase of optimum launch power by 1dB in each case and corr...
Dispersion Management in WDM Coherent PDM-QPSK Systems
Dispersion Management WDM Coherent PDM-QPSK Systems
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2015/7/20
We show that dispersion management with DCF does not outperform electronic dispersion compensation for WDM coherent NRZ-PDM-QPSK systems, but for time-interleaved RZ-PDM-QPSK systems,dispersion manage...
System Benefits of Temporal Polarization Interleaving with 100Gb/s Coherent PDM-QPSK
System Benefits Temporal Polarization Interleaving PDM-QPSK
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2015/7/20
We demonstrate, over a NZDSF link, that the system benefits provided by the temporal interleaving of polarization tributaries of 100Gb/s coherent RZ-PDM-QPSK data depend on the WDM system configuratio...
Electronic Equalization of Polarization Mode Dispersion in Coherent POL-MUX QPSK Systems
Electronic Equalization Polarization Mode Dispersion Coherent POL-MUX QPSK Systems
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2015/7/17
We present a comparison of adaptive electronic PMD equalizers for coherent phase - and polarization-diversity QPSK receivers using the multicanonical Monte Carlo method . A 5-tap equalizer using the C...
Nonlinear Phase Noise Mitigation by Polarization Mode Dispersion in Dispersion Managed coherent PDM-QPSK Systems
Nonlinear Phase Noise Mitigation Polarization Mode Dispersion Dispersion Managed coherent PDM-QPSK Systems
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2015/7/17
We show by simulation that PMD helps reduce nonlinear phase noise in single-channel coherent PDM-QPSK systems at both 43 and 112 Gbit/s, with improved resilience at 112 Gbit/s.
Suppression of Inter-Channel Nonlinearities in WDM Coherent PDM- QPSK Systems Using Periodic-Group-Delay Dispersion Compensators
Inter-Channel Nonlinearities WDM Coherent PDM- QPSK Systems Periodic-Group-Delay
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2015/7/17
We show that periodic-group-delay dispersion compensators can significantly suppress inter-channel nonlinearities in a WDM coherent polarization-division-multiplexed quardrature-phase-shift-keying sys...
Coherent Detection of a 50 Gb/s QPSK Signal Using an InP 90°Hybrid Monolithically Integrated with Balanced Photodetectors
Coherent Detection QPSK Signal Hybrid Monolithically Integrated
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2015/7/17
Error-free detection of a single-polarization 50 Gb/s NRZ-QPSK signal using a coherent detector based on monolithic integration of a waveguide 90°hybrid with two pairs of high-speed balanced photo-det...
An Optical Differential 8-PSK Modulator Using Cascaded QPSK Modulators
Optical Differential 8-PSK Modulator Cascaded QPSK Modulators
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2015/7/17
A new optical D8PSK modulator implementation is proposed. The proposed scheme removes the need for precise driving signal voltage control. Simulation results show the scheme enables modulation signal ...
Experimental 2.5 Gbit/s QPSK WDM Coherent Phase Modulated Radio- over-Fibre Link with Digital Demodulation by a K-means Algorithm
QPSK WDM Coherent Phase Modulated Radio- over-Fibre Link Digital Demodulation K-means Algorithm
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2015/7/17
Highest reported bit rate of 2.5 Gbit/s for optically phase modulated radio-over-fibre link employing coherent detection is demonstrated. Demodulation of 3x2.5 Gbit/s QPSK modulated WDM channels, is a...
Impact of Non-Ideal Pulse Carving Induced Phase Distortions on QPSK based Modulation Format
Non-Ideal Pulse Induced Phase Distortions QPSK Modulation Format
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2015/7/17
We investigate impact of non-ideal pulse carver induced phase distortions on QPSK format. The results show that only 0.5 dB amplitude imbalance of sinusoidal wave applied into carver produces 2 dB ONS...
Analysis and Dimensioning of Fully Digital Clock Recovery for 112 Gb/s Coherent Polmux QPSK Systems
Fully Digital Clock Recovery Coherent Polmux QPSK Systems
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2015/7/16
Combined effect of polarization mixing and Differential Group Delay (DGD) on sinusoidal and random jitter tolerance is investigated. Requirements for tolerable DGD, loop bandwidth and loop delay are e...
43Gb/s CP - QPSK Realtime Receiver Demonstrator based on FPGAs and Block - Processing
Realtime Receiver Demonstrator FPGAs Block - Processing
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2015/7/16
We present measurement results of an FPGA-based 43Gb/s Realtime Coherent Receiver Demonstrator. Due to limitations we use block-aggregation and process 1/32 of the input data stream. We show back - to...
2.6Tb/s (26 x 100Gb/s) Unrepeatered Transmission Over 401km Using PDM-QPSK with a Coherent Receiver
Unrepeatered Transmission PDM-QPSK Coherent Receiver
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2015/7/16
The combination of PDM-QPSK with a coherent receiver and an optimized amplification scheme (high power booster and third order pumped ROPA) enables the transmission of 26 channels at 100Gb/s over a 40...
On the Required Number of WDM Channels When Assessing Performance of 100Gb/s Coherent PDM-QPSK Overlaying Legacy Systems
WDM Channels When Assessing Performance Coherent PDM-QPSK Overlaying Legacy Systems
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2015/7/15
We experimentally analyze WDM nonlinear impairments brought by co-propagating 10Gb/s NRZ channels onto a 100Gb/s PDM-QPSK channel. The PDM-QPSK channel can experience strong nonlinear interactions eve...
100Gb/s WDM NRZ-PM-QPSK Long-Haul Transmission Experiment over Installed Fiber Probing Non-Linear Reach With and Without DCUs
WDM NRZ-PM-QPSK Transmission Experiment Installed Fiber Probing Non-Linear Reach Without DCUs
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2015/7/15
We present an experiment of WDM 100Gb/s coherent NRZ-PM-QPSK transmission over 16 spans of installed SSMF. We used variable span loss, with and without optical dispersion compensation, to investigate ...