搜索结果: 1-13 共查到“辐射度学和色度学 Coherent”相关记录13条 . 查询时间(0.088 秒)
A Novel Dispersion and PMD Tolerant Clock Phase Detector for Coherent Transmission Systems
Novel Dispersion PMD Tolerant Clock Phase Detector Coherent Transmission Systems
2011/5/20
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...
Dual- versus single-carrier configuration for 40 Gb/s coherent BPSK-based solutions over low dispersion fibers
coherent communication optical communication
2010/6/9
We experimentally compare the performance of BPSK-based dual- and single-carrier coherent solutions at 40 Gb/s over low-dispersion fiber. We show that the single-carrier solution is more tolerant to c...
Long-haul coherent QPSK transmission of 40G channels with 120% spectral efficiency using increased linearity dispersion map with 100km spans and EDFAs
fiber optics communications Coherent communications
2010/6/9
We study transmission of 40 Gb/s signals using coherent RZ-QPSK with and without polarization multiplexing using 100km large effective area fiber-spans and dual-stage EDFAs with mid-stage dispersion c...
Ghost imaging with partially coherent light radiation through turbulent atmosphere
Ghost imaging partially coherent light radiation turbulent atmosphere
2009/9/4
Based on the classical optical coherent theory and the extended Huygens-Fresnel integral, ghost imaging with partially coherent light radiation through turbulent at-mosphere has been studied. The anal...
Nonlinear Penalty Reduction Induced by PMD in 112 Gbit/s WDM PDM-QPSK Coherent Systems
Nonlinear Penalty PMD WDM PDM-QPSK Coherent Systems
2009/7/20
We show by simulation that when linear PMD is fully compensated by the receiver, the presence of DGD along the link reduces the amount of residual nonlinear penalty in 112 Gbit/s PDM-QPSK coherent sys...
Systematic Analysis on Multi-Segment Dual-Polarisation Nonlinear Compensation in 112 Gb/s DP-QPSK Coherent Receiver
Systematic Analysis Dual-Polarisation Nonlinear Compensation DP-QPSK Coherent Receiver
2009/7/20
Dependencies on segment number, dispersion map, and fibre launched power were investigated experimentally and numerically. Uncompensated 25 spans standard SMF link can enjoy net Q gain of 1.7dB with 2...
Dispersion Management in WDM Coherent PDM-QPSK Systems
Dispersion Management WDM Coherent PDM-QPSK Systems
2009/7/20
We show that dispersion management with DCF does not outperform electronic dispersion compensation for WDM coherent NRZ-PDM-QPSK systems, but for time-interleaved RZ-PDM-QPSK systems,dispersion manage...
Electronic Equalization of Polarization Mode Dispersion in Coherent POL-MUX QPSK Systems
Electronic Equalization Polarization Mode Dispersion Coherent POL-MUX QPSK Systems
2009/7/17
We present a comparison of adaptive electronic PMD equalizers for coherent phase - and polarization-diversity QPSK receivers using the multicanonical Monte Carlo method . A 5-tap equalizer using the C...
Nonlinear Phase Noise Mitigation by Polarization Mode Dispersion in Dispersion Managed coherent PDM-QPSK Systems
Nonlinear Phase Noise Mitigation Polarization Mode Dispersion Dispersion Managed coherent PDM-QPSK Systems
2009/7/17
We show by simulation that PMD helps reduce nonlinear phase noise in single-channel coherent PDM-QPSK systems at both 43 and 112 Gbit/s, with improved resilience at 112 Gbit/s.
Suppression of Inter-Channel Nonlinearities in WDM Coherent PDM- QPSK Systems Using Periodic-Group-Delay Dispersion Compensators
Inter-Channel Nonlinearities WDM Coherent PDM- QPSK Systems Periodic-Group-Delay
2009/7/17
We show that periodic-group-delay dispersion compensators can significantly suppress inter-channel nonlinearities in a WDM coherent polarization-division-multiplexed quardrature-phase-shift-keying sys...
40-km Range, 1-m Resolution Measurement Based on Phase-noise- compensated Coherent Optical Frequency Domain Reflectometry
Resolution Measurement Phase-noise-compensated Coherent Optical Frequency Domain Reflectometry
2008/8/4
We present 40-km range, 1-m spatial resolution and highly sensitive measurement based on phase-noise-compensated OFDR that employs a concatenative reference method.
Compensation of fibre impairments in digital coherent systems
Compensation fibre impairments digital coherent systems
2008/7/30
Coherent detection combined with digital signal processing (DSP) is a symbiotic relationship. Not only does DSP relax the requirements on the coherent receiver but it permits digital compensation of f...
Coherent photon transport from spontaneous emission in one-dimensional waveguides
photon transport spontaneous emission one-dimensional waveguides
2005/8/11
A two-level system coupled to a one-dimensional continuum is investigated. By using a real-space model Hamiltonian, we show that spontaneous emission can coherently interfere with the continuum modes ...