搜索结果: 106-120 共查到“光学工程 Coherent”相关记录206条 . 查询时间(0.093 秒)
Advanced Coherent Modulation Formats and Algorithms: Higher-Order Multi-Level Coding for High-Capacity System Based on 100Gbps Channel
Coherent communications Fiber optics communications
2015/6/5
We review recent technology advances in high-capacity 100Gbps system using polarization-division-multiplexed (PDM) eight-level coding (8PSK and 8QAM) and DSP-based intradyne detection.Research activit...
Penalty-Free Transmission of 127-Gb/s Coherent PM-QPSK over 1500-km of NDSF with 10 Cascaded 50-GHz ROADMs
Coherent communications Wavelength filtering devices
2015/6/5
We experimentally demonstrate penalty-free transmission of 127-Gb/s coherent PM-QPSK through a cascade of ten commercial 50-GHz WSS over 1500-km NDSF. Simulation results show that cascades of 40 such ...
2038Km and Four 50GHz OADM/Filters Transmission Field Trial of 115.2 Gb/s Coherent CoFDM Modem in the Telstra Network
Optical Communication Fiber optics optical communications
2015/6/5
We present results of a 115.2Gb/s, coherent frequency division multiplexed (CoFDM)transceiver across a 2038km link in the Telstra network. The link had 50GHz channel spacing and the transceiver traver...
100G Coherent DWDM Transponder Module Enabling Seamless Upgrade of Long Haul Optical Transmission Systems
Optical communications Coherent communications
2015/6/5
We review recent trends and progress in 100G module and subsystem development for long haul DWDM applications and explore similarities and differences between these 100G products and those developed a...
Network Innovations Brought by Digital Coherent Receivers
Fiber optics communications Coherent communications
2015/6/4
Operational efficiency improvements of optical networks enabled by digital coherent receivers are discussed in view of reliability, agility, performance and reduced operational complexity. Several spe...
Wavelength-space permutation switch with coherent PDM QPSK transmission for supercomputer optical interconnects
Optical interconnects Coherent communications
2015/6/4
We experimentally study the performance of an economically-viable, high-capacity supercomputer optical interconnect employing wavelength-space optical packet switching,polarization division multiplexe...
Self-Coherent Optical Transmission Using a Narrow Linewidth Tunable Slotted Fabry-Perot Laser
Coherent communication Semiconductor lasers
2015/6/4
A narrow linewidth slotted Fabry-Perot laser has been employed in a self-coherent optical transmission system. A comparison of the system performance of the tunable slotted laser with a SG-DBR laser h...
Improvement of Phase Noise Compensation for Coherent Optical OFDM via Data-Aided Phase Equalizer
Modulation Coherent communications
2015/6/4
We report a novel data-aided phase equalizer for coherent optical OFDM systems with RF-pilot enabled phase noise compensation. Simulation results corroborate the superior performance for different RF-...
Performance of Modified Decision-Directed Polarization Control/Demultiplex Algorithm in Coherent QAM Receiver
Coherent communications Optical communications
2015/6/4
A modified decision-directed polarization control and demultiplex algorithm for coherent receivers is evaluated for QAM schemes up to order 256, and compared against the constant-modulus algorithm ada...
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...
Digital Phase Estimation Method based on Karhunen-Loève series expansion for Coherent Phase Diversity Detection
Optical communications Coherent communications Homodyning
2015/6/4
A novel phase estimation method for coherent systems is presented and demonstrated.It outperforms 5.5 times the phase noise and spectral width tolerance respect to the other methods.
Coherent Demodulation of 10-Gb/s Optical Minimum-Shift Keying
Optical communications Coherent communications
2015/6/4
We propose and demonstrate a digital coherent detection scheme for demodulation of optical MSK signal. A 10-Gb/s MSK signal synthesized by using a quad Mach-Zehnder in-phase/quadrature modulator was e...
Ghost imaging with partially coherent light radiation through turbulent atmosphere
Ghost imaging partially coherent light radiation turbulent atmosphere
2013/7/2
Based on the classical optical coherent theory and the extended Huygens-Fresnel integral, ghost imaging with partially coherent light radiation through turbulent at-mosphere has been studied. The anal...
Universal features of coherent photonic thermal conductance in multilayer photonic band gap structures
Universal features photonic thermal conductance multilayer photonic band gap structures
2015/8/10
We show that at the high-temperature limit, the coherent photonic thermal conductance of a multilayer photonic crystal can be significantly below the corresponding thermal conductance of vacuum....
Novel Wide-range Frequency Offset Compensator Demonstrated with Real-time Digital Coherent Receiver
Wide-range Frequency Offset Compensator Demonstrated Real-time Digital Coherent Receiver
2015/7/30
A novel frequency offset estimator is proposed and implemented in a 1Gbit/s real-time coherent receiver to demonstrate all-digital frequency offset compensation up to ±0.4 symbol rate.