搜索结果: 1-15 共查到“Phase Noise”相关记录24条 . 查询时间(0.106 秒)
Constant Envelope Optical OFDM for Improved Nonlinear and Phase Noise Tolerance
Fiber optics communication Phase Modulation
2011/5/25
We introduce a new concept of OFDM transmission with constant envelope and coherent detection to reduce the sensitivity of OFDM signals to nonlinear effects and phase noise.
System Impacts of Modulation Technology and Phase Noise on Coherent Analog Optical Links
Radio frequency photonics
2011/5/22
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...
Nonlinearity and Phase Noise in High-Current Photodetectors
Photodetectors Radio frequency photonics
2011/5/22
Great progress has been made in the past decade in developing high-current photodetec-tors, but the modeling of these devices has not kept pace. The status of the devices and the models is reviewed.
Optimization of 16-point Ring Constellations in the Presence of Nonlinear Phase Noise
Fiber optics communications Coherent communications
2011/5/21
The optimum radius distribution in terms of the average symbol error rate (SER)for different 16-pointsignal sets is derived numericallyfor a fiber channel limited by nonlinear phase noise. The results...
Phase Noise and Timing Jitter Eliminator for Mode-locked Lasers Based on External Graphene Layers
Mode-locked lasers Nanomaterials
2011/5/21
We demonstrate a noise eliminator with a reduction of 34% for phase noise and timing jitter based on external graphene layers for mode-locked lasers by absorbing the low-power background noise from th...
Mitigation of Dispersion-Induced Phase Noise for an Optical OFDM Radio-over-Fiber System at 60-GHz Band
Fiber optics communications Lasers fiber Radio frequency photonics
2011/5/21
For OFDM RoF systems at 60-GHz band, dispersion-induced phase noise (PN) could heavily degrade transmission performance. We propose an algorithm to suppress PN and experimentally demonstrate the algor...
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...
2-cm spatial resolution over 40 km realized by bandwidth- division phase-noise-compensated OFDR
spatial resolution bandwidth- division noise-compensated OFDR
2011/5/18
We propose a bandwidth-division phase-noise-compensated optical frequency domain reflectometry technique. Using this approach, we realize a spatial resolution of 2 cm over 40 km in a normal laboratory...
High-Sensitivity Phase Noise Monitoring Using a Phase-Asymmetric Nonlinear Loop Mirror
High-Sensitivity Phase Noise Nonlinear Loop Mirror
2011/5/15
A high-sensitivity phase noise (PN) monitoring technique is proposed and demonstrated using a phase-asymmetric nonlinear loop mirror (PANLM). The phase-error variations from 4 0 to 52 0 are extracted ...
High-Power and Low Phase Noise Full-band Tunable LD for Coherent Applications
Semiconductor lasers Lasers tunable
2010/6/10
High output power and low noise performances of CSG-DR-LD have been investigated. Kink-free fiber output power > 60mW over C-band with high SMSR have been demonstrated. Measured phase noise is lower t...
Nonlinear Phase Noise Compensation Using a Modified Nonlinear Optical Loop Mirror
Nonlinear optics fibers Phase modulation
2010/6/10
Nonlinear phase noise compensation with possibility of simultaneous amplitude noise suppression has been experimentally demonstrated in a DPSK transmission system using a modified NOLM. As main applic...
Impact of PMD and Nonlinear Phase Noise on the Global Optimization of DPSK and DQPSK Systems
Optical communications Phase modulation Nonlinear optics fibers
2010/6/10
Usingaglobaloptimizationalgorithm,wemaximizethereachofDPSKandDQPSKsys-tems including PMD and nonlinear phase noise at data rates ranging from 5Gbit/s to 230Gbit/s.
Low phase noise laser source packaged in a low power consumption module for all optical sampling applications
Mode-Locked Lasers Semiconductor Lasers
2010/6/9
Using low power consumption photonic modules containing a low timing jitter optical laser source and an optical gate, we demonstrated potential all-optical sampling of a radio signal carried at >5GHz ...
Low Phase Noise Millimeter-Wave Generation by Integrated Dual Wavelength Laser Diode
Semiconductor lasers Integrated Optics Devices
2010/6/8
We report millimeter-wave generation by an integrated dual wavelength laser diode based on optical sideband injection locking. Low phase noise millimeter-wave carrier at 42 GHz has been generated from...
VCSEL-based Coherent Detection of 10-Gbit/s QPSK Signals Using Digital Phase Noise Cancellation for Future Optical Access Systems
Fiber optics communications Coherent communications
2010/6/5
We propose a VCSEL-based QPSK coherent system to be implemented for future access systems, using digital phase noise cancellation to achieve a coherent detection of 10-Gbit/s QPSK signals with a laser...