搜索结果: 1-15 共查到“工学 Transmission Systems”相关记录24条 . 查询时间(0.093 秒)
Effects of filter bandwidth and driving voltage on optical duobinary transmission systems
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2011/11/23
This work demonstrates how electrical driving voltage of a Mach–Zehnder modulator and the bandwidth of electrical low-pass filters (LPFs) affect optical duobinary signals. The fact that a 100% driving...
Convergence of phase fluctuation induced by intrachannel four-wave mixing in differential phase-shift keying transmission systems via phase fluctuation averaging
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2011/11/22
This work investigates the effect of phase fluctuation averaging on phase fluctuation induced by intrachannel four-wave mixing (IFWM) in highly dispersed differential phase-shift keying transmission s...
A Novel Dispersion-free Interleaver for Bi-directional DWDM Transmission Systems
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2011/11/22
We propose a novel dispersion-free interleaver using optical delay lines by accurately locating the zeros in the transfer function. It has been implemented with the design of interleaver pairs with th...
Frequency-Domain Equalization for Coherent Optical Transmission Systems
Coherent communications Fiber optics links subsystems
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2015/5/26
Frequency-domain equalization (FDE) has been attracting much attention for high-speed long-haul transmission over fiber-optic channels. Two FDE configurations for coherent optical transmission are pre...
Fast Parallelized Simulation of 112 Gb/s CP-QPSK Transmission Systems using Stratified Monte-Carlo Sampling
Fiber optics communications Coherent communications
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2015/5/26
A novel parallelized implementation of the split-step Fourier method on graphics processing units was developed. The combination of Monte-Carlo simulations with single and double precision yields a sp...
Mitigation of Nonlinearities in Optical Transmission Systems
Mitigation Nonlinearities Optical Transmission Systems
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2015/5/21
Nonlinear compensation with digital back-propagation can improve Q-factor by more than 1dB, proven by experiments. Simplification of propagation model is the key to suppress circuit size, whereas stra...
A Novel Dispersion and PMD Tolerant Clock Phase Detector for Coherent Transmission Systems
Novel Dispersion PMD Tolerant Clock Phase Detector Coherent Transmission Systems
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2015/5/20
A novel clock phase detector is presented and shown to be tolerant to chromatic dispersion and PMD. The phase detector can be used in a clock recovery circuit for demodulation of 100 Gb/s coherent tra...
Time-Resolved Error Vector Magnitude for Transmitter Mask Testing in Coherent Optical Transmission Systems
Time-Resolved Optical Transmission Systems Mask Testing
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2015/5/15
We propose a novel transition-sensitive measurement approach for coherent optical systems. The time-resolved error vector magnitude (EVM), combined with mask testing, is a powerful tool for pass/fail ...
Comparison of RZ and NRZ Formats in 112-Gb/s PDM- QPSK Long Haul Coherent Transmission Systems
Coherent Transmission Systems PDM- QPSK RZ\NRZ Formats
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2015/5/15
We show that 112-Gb/s PDM-QPSK coherent transmission systems with RZ pulse shape have better tolerance to ROADM filtering than NRZ, and time-interleaved RZ-PDM-QPSK outperform NRZ-PDM-QPSK in nonlinea...
Frequency Domain Equalization with Minimum Complexity in Coherent Optical Transmission Systems
Fiber optics links subsystems Optical communications
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2015/6/10
For chip-design of a frequency-domain equalizer, a simple procedure to minimize the number of multiplications is shown. Considerations include recent improvements of FFT-algorithms.
Efficient Digital Backpropagation for PDM-CO-OFDM Optical Transmission Systems
Fiber optics communications Modulation
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2015/6/9
We demonstrated experimentally that computationally-efficient digital nonlinearity compensation using backpropagation can increase the nonlinear tolerance of 61.7 Gb/s PDM-CO-OFDM by 2.2 dB in a 500 k...
Terabit/s Single-Carrier Transmission Systems Based on Coherent Time-Division Demultiplexing
Fiber optics communications Ultrafast technology
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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...
Concatenated QC-LDPC and SPC Codes for 100 Gbps Ultra Long-Haul Optical Transmission Systems
Fiber optics communications Optical communications
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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...
100G Coherent DWDM Transponder Module Enabling Seamless Upgrade of Long Haul Optical Transmission Systems
Optical communications Coherent communications
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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...