搜索结果: 1-15 共查到“光学仪器及技术 Monitoring”相关记录15条 . 查询时间(0.129 秒)
STITCHING TYPE LARGE APERTURE DEPOLARIZER FOR GAS MONITORING IMAGING SPECTROMETER
Polarization Depolarizer Muller matrix Imaging Spectrometer Stitching Numerical Analysis
2018/4/30
To increase the accuracy of radiation measurement for gas monitoring imaging spectrometer, it is necessary to achieve high levels of depolarization of the incoming beam. The preferred method in space ...
OPTO-TECHNICAL MONITORING – A STANDARDIZED METHODOLOGY TO ASSESS THE TREATMENT OF HISTORICAL STONE SURFACES
Monitoring Cultural Heritage 3D Scanning UV-VIS-IR photography Preservation Sciences Non-Destructive Testing Methods
2018/3/30
Monitoring is an essential requirement for the planning, assessment and evaluation of conservation measures. It should be based on a standardized and reproducible observation of the historical surface...
Real-Time Ultra-broadband Group Delay Monitoring through Quasi-Incoherent Processing
Fiber Bragg gratings Fiber optics communications Fiber optics components Bragg reflectors Dispersion compensation devices
2011/5/25
Simple method for real-time ultra-broadband group delay measurement of photonic devices is reported, demonstrating accurate group delay ripple monitoring of a 10m-long chirped fiber grating over the f...
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...
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...
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...
Experimental Comparison of Performance Monitoring Using Neural Networks Trained with Parameters Derived from Delay-Tap Plots and Eye Diagrams
Fiber optics communications Pattern recognition neural networks
2010/6/4
We experimentally demonstrate the use of artificial neural networks trained with parameters derived from both delay-tap plots and eye diagrams for multi-impairment monitoring in a 40-Gbit/s non-return...
OSNR Monitoring Technique for PDM-QPSK Signals Based on Asynchronous Delay-Tap Sampling Technique
Fiber optics communications Fiber optics links subsystems
2010/6/4
We propose and demonstrate a new technique for monitoring the individual OSNR of each polarization tributary of PDM-QPSK signals. The results show that the performance of this technique is not sensiti...
Low Cost Multi-Impairment Monitoring Technique for 43 Gbps DPSK and 86 Gbps DP-DPSK Using Delay Tap Asynchronous Sampling Method
Multi-Impairment Monitoring Technique DPSK DP-DPSK
2009/7/17
We present a novel low cost method of multi-impairment monitoring for 43 Gbps DPSK using delay tap asynchronous sampling with 12 GHz receivers. This technique is also demonstrated for 86 Gbps DP-DPSK ...
Tunable OTDR (TOTDR) Based on Direct Modulation of Self-injection Locked RSOA for Line Monitoring of WDM-PON
Tunable OTDR (TOTDR) Locked RSOA Line Monitoring WDM-PON
2008/8/6
We demonstrate a TOTDR based on direct modulation of self-injection locked RSOA for line monitoring of WDM-PON. The proposed TOTDR has 30 nm tuning range and 50 m resolution.
PMD Monitoring in Traffic-carrying Optical Systems
PMD Monitoring Traffic-carrying Optical Systems
2008/8/3
DGD was monitored in in-service terrestrial optical fiber systems for the first time without the requirement of looping-back. The relationship between the measured DGD and the actual fiber PMD paramet...
Optical Performance Monitoring Techniques;Current Status and Future Challenges
Optical Performance Monitoring Techniques
2008/7/31
The optical performance monitoring technique is of critical importance for the continual advancement of dynamic WDM networks. This paper reviews its current status and future challenges.
Development of Duallight Path Monitoring System of Optical Thinfilm Thickness
optical engineering monitoring thinfilm thickness duallight path duallockphase circuit
2008/6/30
The accurate monitoring of optical thinfilm thickness is a key technique for depositing optical thinfilm. For existing coating equipments, which are low precision and automation level on monitoring ...