搜索结果: 1-15 共查到“光学工程 Coherent Receivers”相关记录15条 . 查询时间(0.115 秒)
Compensation of Nonlinear Effects Using Digital Coherent Receivers
Coherent communications Fiber optics communications
2011/5/26
Nonlinearity compensation in digital coherent receivers is feasible from a fundamental point of view. This paper shows that it is possible to reduce the computational load required for nonlinearity co...
Bidirectional 10 Gbit/s long-reach WDM-PON using digital coherent receivers
Optical Communications Coherent Communications
2011/5/22
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...
Characterization of Semiconductor-Laser Phase Noise with Digital Coherent Receivers
Characterization Semiconductor-Laser Phase Noise Digital Coherent Receivers
2011/5/20
We develop a method of characterizing semiconductor-laser phase noise using a digital coherent receiver. The field spectrum, FM-noise spectrum, and phase-error variance can completely describe phase-n...
Low-Complexity, Blind Phase Recovery for Coherent Receivers Using QAM Modulation
Low-Complexity Blind Phase Recovery Coherent Receivers QAM Modulation
2011/5/20
We propose a new hybrid PLL/ML phase estimation method for low-complexity, blind phase recovery for M-QAM modulation. The linewidth tolerance of the proposed method is more than one order of magnitude...
Non-Data-Aided Wide-Range Frequency Offset Estimator for QAM Optical Coherent Receivers
Non-Data-Aided Wide-Range Frequency Offset Estimator QAM Optical Coherent Receivers
2011/5/20
We propose and experimentally demonstrate a novel blind frequency offset estimator for coherent quadrature amplitude modulation (QAM) receivers. Its frequency offset estimation range is more than thre...
Nonlinear Polarization Crosstalk Canceller for Dual-Polarization Digital Coherent Receivers
Optical communications Coherent communication
2010/6/10
A novel method is proposed to compensate polarization crosstalk induced by inter-channel nonlinearity. Experiments have demonstrated that the proposed method provides over 1 dB performance improvement...
Real-time Prototypes for Digital Coherent Receivers
Coherent communications Fiber optics communications
2010/6/8
We review real-time and off-line processing techniques for the proto-typing of a digital coherent receiver.
Data-Aided vs. Blind Single-Carrier Coherent Receivers
Coherent communications Fiber optics links subsystems
2010/6/8
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...
Network Innovations Brought by Digital Coherent Receivers
Fiber optics communications Coherent communications
2010/6/4
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...
Transmission of 160-Gbit/s QPSK Signals on a Single Carrier over 1 , 000 km using Digital Coherent Receivers
Transmission QPSK Signals Single Carrier Digital Coherent Receivers
2009/7/20
We demonstrate 1,000-km transmission of a 160-Gbit/s QPSK signal, using a digital coherent receiver with the time-division demultiplexing function, and confirm the applicability of such a receiver to ...
Complexity of Algorithms for Digital Coherent Receivers
Complexity Algorithms Digital Coherent Receivers
2009/7/16
We give an overview of digital signal processing algorithms for coherent receivers. We explore single carrier and multi carrier approaches and compare the complexity of blind equalizer adaptation as w...
Fast and Accurate Automatic Frequency Control for Coherent Receivers
Fast Accurate Automatic Frequency Control Coherent Receivers
2009/7/16
We demonstrate an algorithm for non-data aided spectrum-based automatic frequency control in coher-ent receivers. The proposed algorithm is independent of modulation formats, robust against channel di...
Controlled Adaptive Equalization for Dual-Polarization Coherent Receivers with Simple Clock Recovery
Controlled Adaptive Equalization Dual-Polarization Coherent Receivers Simple Clock Recovery
2008/7/30
We present a novel controlled adaptive equalization scheme for dual-polarization coherent receivers and demonstrate data asynchronous operation that ultimately allows for simple clock recovery impleme...
Polarization Demultiplexing Based on Independent Component Analysis in Optical Coherent Receivers
Polarization Demultiplexing Independent Component Analysis Optical Coherent Receivers
2008/7/30
A novel independent component analysis based algorithm is proposed for polarization demultiplexing. It solves the converge-to-same-source problem of constant modulus algorithm while possesses similar ...
Digital Clock Recovery Algorithm for Optical Coherent Receivers Operating Independent of Laser Frequency Offset
Digital Clock Recovery Algorithm Optical Coherent Receivers Laser Frequency Offset
2008/7/30
We propose a digital clock recovery algorithm and demonstrate its tolerance to at least 5GHz laser frequency mismatch in a 43Gb/s DP-RZ-QPSK receiver after 1200km transmission.