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Method to Monitor Atmospheric Atomic Mercury by a Differential Absorption Lidar System
Monitor Atmospheric Atomic Mercury Differential Absorption Lidar System
2016/12/2
A differential absorption lidar (DIAL) system has been developed for atomic mercury concentration monitoring and applied in ambient air monitoring in Guangzhou, China. A 24-hour measurement on backgro...
Differential absorption lidar system employed for background atomic mercury vertical profi ling in South China
Differential absorption lidar DIAL Atomic mercury Oxygen Pollutant
2016/12/2
A differential absorption lidar (DIAL) system based on a Nd:YAG laser pumped narrow-band dye laser is developed and employed to monitor the atmospheric background concentration of atomic mercury in Gu...
On Negative Differential Mobility in Nanophotonic Device Functionality
Nanophotonics Two-Dimensional Electron-Gas Semiconductor-Device Nanointerface Negative Differential Mobility Optoelectronics Nanotechnology
2013/1/30
A negative differential mobility (NDM) of the two-dimensional carrier-gas against some proper external regulator allowing for gradual controlled modification of the nanointerfacial environment tends t...
Negative differential thermal conductance through vacuum
Negative differential thermal conductance through vacuum
2015/8/7
We propose a scheme for achieving negative differential thermal conductance in near-field electromagnetic thermal transfer. As an example, we show that the scheme can be implemented with two sla...
Differential cross-polarization modulation (DXPoM) wavelength conversion using a semiconductor optical amplifier has been proposed to outperform substantially traditional cross-polarization modulation...
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...
Modulation-Format-Free Bias Control Technique for MZ Modulator Based on Differential Phasor Monitor
MZ Modulator Phasor Monitor Modulation-Format-Free Bias Control
2015/5/15
We propose a novel bias control technique based on the differential phasor monitor for the LiNbO 3 modulator. For demonstrations, the proposed bias control technique was used for 20-Gb/s QPSK and 43-G...
Improvement of Chromatic Dispersion and Differential Group Delay Tolerance of Incoherent Multilevel Signaling with Receiver-side Digital Signal Processing
Fiber optics communications Modulation
2015/6/10
Chromatic dispersion and differential group delay tolerance of 30-Gbit/s 8DPSK and 8QAM signaling is investigated experimentally, and we show 1.7 and 1.25 times enhancement of them in 8QAM signaling b...
Heuristic Strategies for Routing 100-GbE over OTN in Distributed Differential Delay Compensation Architectures
Networks Optical communications
2015/6/8
A heuristic optimization framework is proposed for routing virtually-concatenated 100Gb/s Ethernet over optical transport networks with distributed differential delay compensation.Under short computin...
Tunable Free Space Optical Delay Interferometer for Demodulation of Differential Phase Shift Keying Signals
Phase modulation Interferometry
2015/6/4
With a continuously tunable free space optical delay interferometer and direct detection D(Q)PSK signals can be received at varying symbol rates or under optimized conditions. The in-terferometer’s ph...
Direct Fan-Beam Reconstruction Algorithm via Filtered Backprojection for Differential Phase-Contrast Computed Tomography
Direct Fan-Beam Reconstruction Algorithm Filtered Backprojection Differential Phase-Contrast Computed Tomography
2009/9/4
Recently, a novel data acquisition method has been proposed and experimentally implemented for differential phase-contrast computed tomography (DPC-CT), in which a conventional X-ray tube and a Talbot...
An Optical Differential 8-PSK Modulator Using Cascaded QPSK Modulators
Optical Differential 8-PSK Modulator Cascaded QPSK Modulators
2015/7/17
A new optical D8PSK modulator implementation is proposed. The proposed scheme removes the need for precise driving signal voltage control. Simulation results show the scheme enables modulation signal ...
Optimized ODU Routing for 100 Gb/s Ethernet over High-Speed Optical Networks with Distributed Differential Delay Compensation
Optimized ODU Routing Ethernet High-Speed Optical Networks Distributed Differential Delay Compensation
2015/7/16
We propose an optimization framework for routing virtually-concatenated 100 Gb/s Ethernet signals over optical transport networks with optimal buffer dimensioning and minimum capacity requirements in ...
QAM Adaptation of Constant-Modulus Algorithm and Differential Phase Compensation for Polarization Demultiplex in Coherent Receiver
QAM Adaptation Constant-Modulus Algorithm Differential Phase Compensation Polarization Demultiplex Coherent Receiver
2015/7/16
The constant modulus algorithm is adapted for QAM signals and complemented with a differential phase compensation. This triples polarization control speed and doubles laser linewidth tolerance.
We have developed a 43-Gb/s differential receiver module for RZ-DPSK. A wide bandwidth of 42 GHz and a high transimpedance gain of 58 dB Ω were achieved.