搜索结果: 91-105 共查到“光学工程 Coherent”相关记录206条 . 查询时间(0.226 秒)
40G and 100G deployment on 10G Infrastructure: market overview and trends, Coherent versus Conventional technology
deployment Infrastructure market overview trends Coherent versus Conventional technology
2015/6/8
We compare conventional and coherent solutions for 40G and 100G operations. We then discuss 40G and 100G deployment strategy over 10 G infrastructures in the context of a field trail on a commercial l...
Single-Channel 400 Gbit/s, OTDM-32 RZ/QAM Coherent Transmission Over 225 km Using an Optical Phase-Locked Loop Technique
Coherent communications Modulation Multiplexing
2015/6/8
We describe a single-channel 400 Gbit/s (polarization-multiplexed, 10 Gsymbol/s, 4 OTDM-32 RZ/QAM) coherent transmission using an optical phase-locked loop technique with a frequency-stabilized fiber ...
140 Gbit/s Coherent Optical Transmission over 150 km with a 10 Gsymbol/s Polarization-Multiplexed 128 QAM Signal
Fiber optics communications Coherent communications
2015/6/8
We demonstrate a 140 Gbit/s coherent optical transmission over 150 km with a polarization-multiplexed 10 Gsymbol/s, 128 QAM format in a 20 GHz bandwidth. Error-free 120 Gbit/s-150 km transmission is a...
Double-Pass PBS-Integrated Coherent Mixer Using Silica-based PLC
Integrated optics devices Coherent communications Fiber optics communications.
2015/6/8
A coherent mixer with double-pass polarization-beam splitters integrated in silica-based PLC is newly developed. It is experimentally confirmed that the developed PLC-chip successfully works in the re...
Digital Optical Phase Locked Loop for Real-Time Coherent Demodulation of Multilevel PSK/QAM
Optical communications Coherent communications
2015/6/8
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 ...
110-Gb/s Multi-band Real-time Coherent Optical OFDM Reception after 600-km Transmission over SSMF Fiber
Fiber optics links subsystems Coherent communications
2015/6/8
We demonstrate real-time reception of a 110-Gb/s multi-band OFDM signal after transmission of 600-km SSMF fiber and 400-ps differential-group-delay. The performance of 110-Gb/s CO-OFDM signal is chara...
Real-time Prototypes for Digital Coherent Receivers
Coherent communications Fiber optics communications
2015/6/8
We review real-time and off-line processing techniques for the proto-typing of a digital coherent receiver.
Semi-blind Nonlinear Equalization in Coherent Multi-Span Transmission System with Inhomogeneous Span Parameters
Fiber optics communications Coherent communications
2015/6/8
Semi-blind sequence is proposed for optimizing the nonlinear equalization parameters from limited prior knowledge of link. Its performance is demonstrated in an extreme case where the fiber type of a ...
Data-Aided vs. Blind Single-Carrier Coherent Receivers
Coherent communications Fiber optics links subsystems
2015/6/8
Blind and data-aided single-carrier receivers are discussed for high-speed optical coherent receivers. Equalization concepts are presented and evaluated regarding the implementation complexity and ove...
Transmission of 5x62 Gbit/s DWDM Coherent OFDM with a Spectral Efficiency of 7.2 Bit/s/Hz using Joint 64-QAM and 16-QAM Modulation
Modulation Coherent communications
2015/6/8
Transmission of 5x62 Gbit/s polarization multiplexed coherent OFDM is demonstrated over 80 km SSMF. Using 64-QAM and 16-QAM simultaneously allows reducing the channel spacing and makes a net spectral ...
Transmission of 44-Gb/s Coherent Optical OFDM Signal with Trellis-Coded 32-QAM Subcarrier Modulation
Coherent communications Fiber optics communication
2015/6/8
We experimentally demonstrate the transmission of a spectrally-efficient 44-Gb/s CO-OFDM signal whose subcarriers are trellis-coded with 32-QAM over a 990-km dispersion-managed SSMF link, and show the...
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...
Two-Stage Constant Modulus Algorithm Equalizer for Singularity Free Operation and Optical Performance Monitoring in Optical Coherent Receiver
Fiber optics communications Coherent communications Polarization
2015/6/5
A two-stage constant-modulus-algorithm (CMA) equalizer for polarization-demultiplexing in a polarization-division-multiplexed coherent receiver is demonstrated. The equalizer eliminates the singularit...
Experimental Demonstration of Decision-Aided Maximum Likelihood Phase Estimation in 8-Channel 42.8-Gbit/s DWDM Coherent PolMux-QPSK System
Optical communications Coherent communication Phase modulation
2015/6/5
We experimentally demonstrate a novel decision-aided maximum likelihood phase estimation in an 8-Channel 42.8-Gbit/s DWDM coherent PolMux QPSK system. The results show that our proposed algorithm can ...
256 QAM (64 Gbit/s) Coherent Optical Transmission over 160 km with an Optical Bandwidth of 5.4 GHz
Fiber optics communications Coherent communications
2015/6/5
We present the first demonstration of 256 QAM coherent optical transmission, where 64 Gbit/s polarization-multiplexed data at 4 Gsymbol/s were successfully transmitted over 160 km with an optical band...