搜索结果: 106-120 共查到“光学工程 systems”相关记录185条 . 查询时间(0.192 秒)
Nonlinear Effects Prediction in Ultra-Dense WDM Systems Using Volterra Series
All-optical networks Nonlinear optics
2015/6/4
Volterra Series Transfer Function method is investigated to analyze fiber nonlinearities in ultra-dense WDM systems. For 340x1Gb/s at 3GHz grid using intensity-modulated signals, the method enables fa...
PDL Mitigation in PolMux OFDM Systems using Golden and Silver Polarization-Time Codes
Fiber optics communications Optical communications Modulation
2015/6/4
Polarization-Time coding can highly mitigate PDL impairments in optical OFDM sys-tems. The performances of two full-rate Polarization-Time codes, the Golden and Silver codes, have been evaluated showi...
Fiber Nonlinearity Mitigation in 428-Gb/s Multiband Coherent Optical OFDM Systems
Fiber optics communications Coherent Communications
2015/6/4
We propose DFT-spread (DFT-S) OFDM within each sub-band of multiband-CO-OFDM to mitigate fiber nonlinearity. For 1000-km standard-single-mode-fiber transmission at 420-Gb/s, 32-band DFT-S CO-OFDM outp...
Impact of Polarization-mode Dispersion on Wavelet Transform Based Optical OFDM Systems
Fiber optics communications Modulation
2015/6/4
The impact of PMD on wavelet transform based optical OFDM (WTO-OFDM) systems is investigated. Simulations show that WTO-OFDM is very sensitive to PMD. A 1-dB penalty at 5-ps DGD is incurred for 112-Gb...
Systems for testing thermal imagers offered commercially are built from the same modules:
an off-axis reflective collimator, a motorized rotary wheel, a set of IR targets, a black body,
a black body...
A 120Hz Local Blinking HDR system was proposed to significantly reduce MPRT down to 3.89ms and keep high brightness almost as well as conventional LCDs, that is distinct from the prior arts, such as B...
Advances in Fibers and Transmission Line Technology for Long Haul Submarine Systems
Advances Fibers Transmission Line Technology Long Haul Submarine Systems
2015/7/20
We review recent development of optical fibers for submarine networks. Further we discuss how new signal formats and increased bit rates change the requirements for fibers and challenge the balance be...
The future of Submarine Systems - Where Do Upgrades Fit?
future Submarine Systems Upgrades Fit
2015/7/20
There are many technologies and techniques being considered for future builds; this paper will consider how some of these might impact the potential for third party upgrades.
Investigating the Noise Statistics in Practical Systems
Investigating Noise Statistics Practical Systems
2015/7/20
We use a recirculating fibre loop setup to determine the probability density function of sampled bits in long links under linear and nonlinear propagation conditions. Our measurements confirm a recent...
Nonlinear Penalty Reduction Induced by PMD in 112 Gbit/s WDM PDM-QPSK Coherent Systems
Nonlinear Penalty PMD WDM PDM-QPSK Coherent Systems
2015/7/20
We show by simulation that when linear PMD is fully compensated by the receiver, the presence of DGD along the link reduces the amount of residual nonlinear penalty in 112 Gbit/s PDM-QPSK coherent sys...
Revisiting the evaluation of non-linear propagation impairments in highly dispersive systems
non-linear propagation impairments highly dispersive systems
2015/7/20
The relevance of the nonlinear phase criterion for predicting performance in highly dispersive systems is investigated. For such systems, we propose and validate a more accurate criterion accounting f...
Taking long repeatered submarine systems to 40Gbit/s and beyond
repeatered submarine systems beyond
2015/7/20
We review recent advances in experimental demonstrations of transmission at 40Gbit/s and 100Gbit/s per channel over submarine distances. Coherent detection, large effective area fibers, and hybrid amp...
Lessons Learned Designing and Building Turnkey Submarine Systems
Lessons Learned Designing Building Turnkey ubmarine Systems
2015/7/20
Transoceanic submarine communication systems are one of the most challenging products in the field of optical communications, requiring application of cutting edge technologies. We review the processe...
Experimental Demonstration of Nonlinear Electrical Equalizer to Mitigate Intra-channel Nonlinearities in Coherent QPSK Systems
Nonlinear Electrical Equalizer Mitigate Intra-channel Nonlinearities Coherent QPSK Systems
2015/7/20
We experimentally demonstrate the mitigation of intra-channel nonlinearities in 10GBaud coherent quadrature phase shift keying systems via nonlinear electrical equalizer based on Volterra theory. The ...
Dispersion Management in WDM Coherent PDM-QPSK Systems
Dispersion Management WDM Coherent PDM-QPSK Systems
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...