搜索结果: 91-105 共查到“光学工程 systems”相关记录185条 . 查询时间(0.312 秒)
Terabit/s Single-Carrier Transmission Systems Based on Coherent Time-Division Demultiplexing
Fiber optics communications Ultrafast technology
2015/6/9
Single-carrier systems using coherent time-division demultiplexing and demodulation of 4-PSK, 8-PSK and 16-QAM at bit rates up to 5.1 Tb/s are reviewed. Emphasis is on transmission experiments up to 1...
All-optical parallelization for high sampling rate photonic ADC in fully digital radar systems
Ultrafast information processing Nonlinear optics four-wave mixing
2015/6/9
Optical samples of RF signals are all-optically parallelized for further processing in low-speed electrical digitizers. This technique enables high-rate sampling with no additional jitter and limited ...
High-Speed Optical Transceiver and Systems for Optical Interconnects
Optical devices Optical interconnects
2015/6/9
Demand for higher data throughput and higher interconnect densities in servers and routers for IT network systems is growing quickly. Optical interconnects have both speed and high-density. There are ...
A Dual-Peak Optical Demultiplexer in 60GHz-band Radio over Fiber Systems
Multiplexing Fiber Bragg gratings
2015/6/8
A dual-peak optical demultiplexer based on sampled and phase-shifted fiber Bragg grating was proposed and the impact of group delay is discussed. The demultiplexer is experimentally demonstrated and a...
Sub-wavelength add/drop multiplexers are pragmatic and efficient systems that could drive the next generation of networks. In this paper we will discuss on the potential of this new technology and on ...
A Digital Subcarrier Multiplexing Technique for Increased Spectral Efficiency in Optical Systems Using Direct Detection
Fiber optics optical communications Modulation Multiplexing
2015/6/8
We propose a novel technique that allows direct detection of multicarrier signals without using DSP at the receiver. Performance at 55.5 Gb/s, back-to-back and after 1040 km of dispersion uncompensate...
Pseudo-Newton based Equalization Algorithms for QAM Coherent Optical Systems
Coherent communications Optical communications
2015/6/8
In 112Gbit/s optical coherent transmission context, we propose decision-directed and blind adaptive equalizers using variable step size suitable for 16-QAM. The considered algorithms offer better stea...
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
2015/6/8
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...
Concatenated QC-LDPC and SPC Codes for 100 Gbps Ultra Long-Haul Optical Transmission Systems
Fiber optics communications Optical communications
2015/6/8
We propose and investigate a novel FEC coding scheme based on a concatenation of QC-LDPC with single-parity-check codes. High performance of a Q-limit of 5.8 dB with 20.5% overhead has been achieved w...
Soft Decision FEC for 100G Transport Systems
Fiber optics communications Optical communications
2015/6/8
A practical implementation of soft decision based FEC for 100G transport systems is discussed. The keys are a stronger coding gain using triple-concatenated FEC and a multi-lane distribution architect...
OFDM vs. OOK with MLSD for IM/DD Systems
Fiber optics communications Fibers single-mode Modulation
2015/6/8
We compare the performance of direct-detection OFDM techniques using optimized power allocations to the performance of OOK with MLSD in amplified direct-detection systems using single-mode fiber.
Wide Dynamic Range OSNR Monitoring for RZ-DQPSK Systems using Delay-Tap Sampling Technique
Fiber optics communications Fiber optics links subsystems
2015/6/5
We propose half-symbol delay-tap sampling for OSNR monitoring and extend the monitoring range to 5−45 dB. The proposed method also enables calibration-free monitoring with range of 16−43 d...
VCSEL-based Coherent Detection of 10-Gbit/s QPSK Signals Using Digital Phase Noise Cancellation for Future Optical Access Systems
Fiber optics communications Coherent communications
2015/6/5
We propose a VCSEL-based QPSK coherent system to be implemented for future access systems, using digital phase noise cancellation to achieve a coherent detection of 10-Gbit/s QPSK signals with a laser...
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...
Multi-service Multi-carrier Broadband MIMO Distributed Antenna Systems for In-building Optical Wireless Access
Optical communications Radio frequency photonics
2015/6/4
A novel broad spectrum band-shifting technique is experimentally demonstrated to simultaneously transmit broadband (500MHz to 3 GHz) multi-service, multi-carrier MIMO signals for in-building radio-ove...