搜索结果: 16-30 共查到“光学工程 Monitoring”相关记录58条 . 查询时间(0.292 秒)
An Efficient Partial Link Monitoring Scheme for Inter-Domain Routing Under Dynamic Traffic Scenarios
Efficient Partial Link Monitoring Scheme Inter-Domain Routing Under Dynamic Traffic Scenarios
2011/5/25
We investigate link-state advertising in multi-domain networks with dynamic traffic. A novel triggering scheme is proposed to monitor a subset of domain links, and thereby achieve a balance between sa...
Remotely Pumped WDM-PONs for Bidirectional 10-Gb/s Transmission with Channel Fault Monitoring
Fiber optics communications Fiber optics amplifiers oscillators
2011/5/22
WDM-PONs for 10-Gb/s bidirectional transmission are realized with REAMs as ONUs and ASE source for channel fault monitoring. The remotely pumped scheme can simultaneously boost up- and down-stream sig...
A Cost-effective Pilot-Tone-based Monitoring Technique for Power Saving in RSOA-based WDM-PON
Cost-effective Pilot-Tone-based Monitoring Technique Power Saving RSOA-based WDM-PON
2011/5/21
We propose and experimentally demonstrate a simple and novel monitoring technique with the modulation of RSOA’s ASE by the pilot-tone monitoring signal at the ONU, to provide power saving in RSOA-base...
A Novel Monitor Placement Algorithm for Accurate Performance Monitoring in Optical Network
Optical Network Accurate Performance Monitoring Placement Algorithm
2011/5/15
We propose a novel monitor placement algorithm that reduces significantly the number of monitors required to accurately assess the QoT of all lightpaths established in an optical network, compared to ...
High-Precision In-situ Wavelength Stabilization and Monitoring of Tunable Lasers Using AWG and PD Arrays
In-situ Wavelength Stabilization Tunable Lasers AWG PD Array
2011/5/15
This paper presents a rapid laser wavelength stabilization and monitoring technique based on a feedback loop using AWG with PD arrays at 0.5 MHz. The experiment demonstrates control accuracy of ±0.015...
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 ...
Stimulated Brillouin Scattering based In-Band OSNR Monitoring for 40G and 100G Deployment in Optical Networks with 100 GHz and 50 GHz Channel Spacing
Fiber optics communications Fiber optics links subsystems
2010/6/10
We present an improved approach for SBS based in-band OSNR monitoring with a drastic enhancement of the dynamic monitoring range for 44.6 Gbps DPSK and 112 Gbps DP-QPSK signals by intentionally adding...
OSNR Monitoring Using Two Fiber Interferometers
Fiber optics communications Phase modulation
2010/6/10
In-band OSNR from 5 to 30dB of a single 10G NRZ-OOK channel was measured by two fiber interferometers within an accuracy of ±0.5dB without requirement for knowledge of the noise-free extinction ratio ...
Simultaneous Monitoring of In-Band Optical Noise for WDM Signals using Stimulated Brillouin Scattering
Scattering stimulated Nonlinear optics fibers
2010/6/9
We demonstrate simultaneous monitoring of the optical signal to noise ratio (OSNR) for wavelength-division multiplexed 40 Gb/s signals using the back-reflected Stokes wave from Stimulated Brillouin Sc...
Real-Time Monitoring of the Modal Content of Monolithic Large-Mode-Area Fiber Lasers
Fiber characterization Lasers fiber Fiber Bragg gratings Fabry-Perot
2010/6/9
A method for the real-time monitoring of the modal content of a monolithic LMA fiber laser is reported for the first time. It allows for the direct observation of the dynamics of transversal mode comp...
All-optical multi-impairment performance monitoring of 640 Gb/s optical signals using a chalcogenide photonic chip
Nonlinear optical signal processing Nonlinear optics devices
2010/6/9
We demonstrate multi-impairment monitoring of 640 Gb/s signals enabled by a broadband photonic-chip-based radio-frequency spectrum analyser. We show simultaneous monitoring of group velocity dispersio...
Phasor Monitoring of DxPSK Signals Using Software-Based Synchronization Technique
Fiber optics communications Phase modulation
2010/6/8
We develop a novel technique to obtain the constellation diagram from asynchronously sampled data measured by using the delay-detection technique, and demonstrate the constellation monitoring of 10.7-...
Wide Dynamic Range OSNR Monitoring for RZ-DQPSK Systems using Delay-Tap Sampling Technique
Fiber optics communications Fiber optics links subsystems
2010/6/5
We propose half-symbol delay-tap sampling for OSNR monitoring and extend the monitoring range to 5−45 dB. The proposed method also enables calibration-free monitoring with range of 16−43 d...
Two-Stage Constant Modulus Algorithm Equalizer for Singularity Free Operation and Optical Performance Monitoring in Optical Coherent Receiver
Fiber optics communications Coherent communications Polarization
2010/6/5
A two-stage constant-modulus-algorithm (CMA) equalizer for polarization-demultiplexing in a polarization-division-multiplexed coherent receiver is demonstrated. The equalizer eliminates the singularit...
Optically Powered Low-Energy Demarcation Device for Monitoring FTTx Networks
Fiber optics optical communications Remote sensing sensors
2010/6/5
We demonstrate an energy-autarkic FTTx monitor. A special protocol and sophisti-cated hardware reduce the electrical operating power to 0.7μW, which can be delivered by an optical supply signal of onl...