搜索结果: 1-12 共查到“光学工程 optical communications”相关记录12条 . 查询时间(0.066 秒)
Three-Dimensional Subcarrier-Multiplexed Nonbinary- LDPC-Coded Modulation Schemes Enabling Ultra High Speed Optical Communications
Fiber optics communications Modulation Low-density parity-check codes
2011/5/25
We propose nonbinary-LDPC-coded modulation schemes employing subcarrier-multiplexing and three-dimensional constellations. We improve coding gains of conventional PDM-M-QAM by 2.17dB and 2.92dB, for M...
First Experimental Demonstration of Nonbinary LDPC- Coded Modulation Suitable for High-Speed Optical Communications
Fiber optics and optical communications Modulation Low-density parity- check (LDPC) codes
2011/5/25
The first experimental demonstration of nonbinary-LDPC-coded optical transmission is presented. Using DQPSK, we can achieve >8dB and ~10dB net coding gains at the BER of 10 -6 in the absence and prese...
Layered Decoding of Nonbinary LDPC Codes Suitable for High-Speed Optical Communications
Optical communications Forward error correction Low-density parity- check codes
2011/5/25
We propose using layered update rule in decoding nonbinary LDPC codes. Only 10-15 iterations suffice for good performance. Also, for the same BER performance, it increases throughput by twofold compar...
Coded modulation schemes for optical transport are reviewed and coding of 4-D constellations is discussed including iterative demapping for soft-detection of polarization-switched QPSK which achieves ...
Adaptive Pulse Shaping for High-Speed Optical Communications
Pulse shaping Optical communications
2010/6/9
Through temporal pulse shaping at a repetition rate of 42.7 GHz, this paper demonstrates a simple method with applications in high-speed optical communications for adaptive, multi-type pulse shaping, ...
Sensitivity of Balanced Receivers for Polarization Shift Keying in Free-Space Optical Communications
Sensitivity Balanced Receivers Polarization Shift Free-Space Optical Communications
2009/7/20
Polarization modulation is a robust and efficient format for optical free-space communications. We study the sensitivity of real-world balanced receivers, including possible atmospheric effects on the...
Ge-on-Si Photodetectors for Optical Communications
Ge-on-Si Photodetectors Optical Communications
2009/7/17
Ge-on-Si waveguide integrated photodetectors including Metal-Semiconductor-Metal (MSM), vertical PIN and lateral PIN diodes are reviewed.
Waveguide Nonlinear-Optic Devices for Optical Communications
Nonlinear optics Wavelength conversion Optical switching
2009/6/9
Waveguide-type quasi-phase matched (QPM) nonlinear-optic devices offer numerous applications in optoelectronics area. Wavelength converters based on QPM difference frequency generation (DFG) have adva...
International Conference on Optical Communications and Networks 2009, ICOCN 2009（2009年光通信与网络国际会议）
2009年 光通信 网络 会议
2009/3/6
The 8th International Conference on Optical Communications and Networks (ICOCN 2009) invites high-quality recent research results in the areas of optical devices, components, communications, transmiss...
Optical communications as a social infrastructure and its enabling technologies
Optical communications social infrastructure enabling technologies
2008/7/30
The optical fiber communications community experienced 30 years of rapid growth from 1970 to 2000, and a severe downturn lasting several years after 2000, but has been rising up again in recent years....
Optical Communications-A View into the Future
Optical Communications-A View into the Future
2008/7/30
In spite of some setbacks, the last 10 years have seen phenomenal advances and growth in optical systems/networks. From a commercial viewpoint, deployed transmissions systems have per fiber capacities...
High-speed digital signal processing for optical communications
High-speed digital signal processing optical communications
2008/7/30
Today’s electronic processing capability means that it is now possible to perform extensive signal processing at the highest commercial data rates. In this tutorial we discuss the design and technolog...