搜索结果: 16-30 共查到“光学工程 Coherent”相关记录206条 . 查询时间(0.14 秒)
Real-time FPGA-based Coherent Optical Receiver for 1 Gsymbol/s, 64 QAM Transmission
Coherent communications Fiber optics communications
2015/5/25
We demonstrated the first time real-time FPGA-based coherent optical receiver for a 64 QAM transmission. Error free performance (BER < 1x10 -12 ) was achieved under a back-to-back condition and the BE...
System Impacts of Modulation Technology and Phase Noise on Coherent Analog Optical Links
Radio frequency photonics
2015/5/22
We describe an analog optical link using amplitude modulation and coherent detection for high SFDR, gain, and low noise figure. We then address the dominant performance-limiting parameters and discuss...
Bandwidth Scalable, Coherent Transmitter Based on Parallel Synthesis of Multiple Spectral Slices
Modulation Coherent Communications Pulse Shaping
2015/5/22
This paper presents a bandwidth-scalable, coherent optical transmitter based on the parallel synthesis of multiple spectral slices. As a proof-of-principle, two spectral slice, 6-ns DPSK and QPSK wave...
Architectural Optimization of Coherent Ultra-Dense WDM based Optical Access Networks
All-optical networks Coherent communications Networks
2015/5/22
Different architectures for achieving ultra-high aggregate data rate PON are compared and optimized. An ultra-dense scheme is used to set the limits for the technology and a strategy for minimizing in...
Bidirectional 10 Gbit/s long-reach WDM-PON using digital coherent receivers
Optical Communications Coherent Communications
2015/5/22
Bidirectional transmission at 10 Gbit/s using 3.125 GBaud PDM-QPSK over 100 km of SMF is investigated. We observe no penalty for transmission of 10 GHz spaced channels. Preamplification improves the r...
Generation of 5-Gbps QPSK Signal using Directly Modulated RSOA for 100-km Coherent WDM PON
Fiber optics links subsystems Coherent communications
2015/5/22
We generate the QPSK signal by utilizing the chirp characteristics of the directly modulated RSOA for the high-speed coherent WDM PON. In addition, we demonstrate the error-free transmission of the 5-...
Coherent Detection for 1550 nm, 5 Gbit/s VCSEL Based 40 km Bidirectional PON Transmission
Coherent Detection VCSEL Based Bidirectional PON Transmission
2015/5/22
Coherent detection of directly modulated 1550nm VCSELs in 5Gbit/s bidi-rectional 40km SSMF PON-links is presented. Receiver sensitivity of –37.3dBm after transmission is achieved with 30dB system marg...
Coherent technology is the only viable solution to fulfill requirements regarding data rate, reach and splitting factor for optical access. Cost of optics is compensated by savings in system design to...
Tolerance to nonlinearity of 40 Gb/s BPSK-based coherent solution over legacy systems based on non-zero dispersion- shifted fibers
coherent communication optical communication
2015/5/22
We experimentally assess the performance of coherent PDM-BPSK at 40Gb/s over non-zero dispersion-shifted fiber. The BPSK-based solution is found about 7.5dB more robust than the QPSK-based solution ag...
Time-Stretch Analog-to-Digital Conversion Using Phase Modulation and Broadband Balanced Coherent Detection for Improving Resolution
Fiber optics links subsystems Radio frequency photonics
2015/5/22
We introduce a novel implementation of time-stretch analog-to-digital conversion which uses phase modulation and balanced coherent detection for improving resolution. Proof of concept experiment demon...
400 Gb/s optical packet switching node design with coherent detection
optical networks optical communications
2015/5/22
We demonstrate how to realize 400 Gb/s optical packet switching for the first time. The key functions of optical packet generation, label separation, colorless O-OFDM payload detection and wavelength ...
Design of a High Speed Nanophotonic Architecture for Cache Coherent Multicores
Design High Speed Nanophotonic Architecture Cache Coherent Multicores
2015/5/22
We propose a high speed nanophotonic network for future cache coherent multicores called CC-NPA. Our results indicate that CC-NPA increases performance by 25% when compared to an electrical bus networ...
Optimum Signal Constellation Design for Rotationally Symmetric Optical Channel with Coherent Detection
Modulation Coherent communications Optical channel capacity Rotationally symmetric optical channel
2015/5/21
We present an optimum signal-constellation design (OSCD) method to obtain the optimum probabilities and mass points by split-step method. The OSCD increases channel capacity by 1.02bits/channel use af...
1.3 μm all-VCSEL low complexity coherent detection scheme for high bit rate and high splitting ratio PONs
Fiber optics communications Vertical cavity surface emitting lasers Coherent
2015/5/21
Full 1.3 μm VCSEL-based simplified coherent detection receiver is demonstrated at 5 Gbps. Receiver sensitivity of -34 dBm is achieved providing link reach and splitting ratio extension for future pass...
120-Gb/s PDM 64-QAM transmission over 1,280 km using multi-staged nonlinear compensation in digital coherent receiver
120-Gb/s PDM 64-QAM transmission multi-staged nonlinear compensation digital coherent receiver
2015/5/21
We succeed in the long-haul (1,280km) transmission of a 120-Gb/s PDM 64-QAM signal. The transmission distance was extended from 800 km to 1,280 km by a multi-stage nonlinear compensation technique tha...