搜索结果: 1-8 共查到“知识库 光学工程 return”相关记录8条 . 查询时间(0.031 秒)
VEGETATION CHARACTERISTICS USING MULTI-RETURN TERRESTRIAL LASER SCANNER
terrestrial laser scanning vegetation mapping point cloud processing DEM/DTM
2014/6/5
Distinguishing vegetation characteristics in a terrestrial laser scanner dataset is an interesting issue for environmental assessment. Methods for filtering vegetation points to distinguish them from ...
Bit error rate (BER) performance of return-to-zero and non-return-to-zero data signals optical code division multiple access (OCDMA) system based on AND detection scheme in fiber-to-the-home (FTTH) networks
spectral amplitudes coding – optical code division multiple access detectionscheme subtraction technique non-return-to-zero (NRZ) and return-to-zero (RZ) pulse generator
2011/5/5
In this paper, we will focus on the modulation format used to create the optical pulses, which are
return-to-zero (RZ), and non-return-to-zero (NRZ). Bit error rate (BER) performance is evaluated
ba...
An ASE-Injected FP-LD-Based Return-to-Zero Transmitter for Long-Reach WDM-PONs
Fiber optics optical communications Fiber optics communications
2015/6/10
We propose and demonstrate a simple RZ transmitter based on incoherent-light-injected FP-LD which improves the dispersion tolerance by a factor of 1.5. Thanks to wide timing margin between adjacent bi...
Compact, Low Power and Low Threshold Electrically Pumped Micro Disc Lasers for 20Gb/s Non Return to Zero All Optical Wavelength Conversion
Wavelength conversion devices All-optical devices
2015/6/8
Using a 7.5μm wide InP Micro-Disc-Laser, with a very low ~100μA threshold current, heterogeneously integrated on top of Silicon on Insulator substrate, all optical NRZ wavelength conversion at speeds ...
Analyzing return loss deterioration of optical fiber joints with various air-filled gaps over wide wavelength range
Fiber characterization Fiber optics
2015/6/5
We experimentally investigated the return loss of optical fiber joints with various air-filled gaps. We discovered that the return loss might deteriorate to 8.6 dB for one connector and 5.9 dB for fou...
Multi-channel return-to-zero signal regeneration using a single phase modulator and an AWG
Fiber optics communications Signal regeneration
2015/6/4
We demonstrate multi-channel RZ signal regeneration based on a phase-modulator and an AWG. BER improvements for 8 10Gb/s channels after 450km transmission demonstrate that regeneration with timing jit...
Pseudo-Return-to-Zero Modulation Scheme:Application to the Compensation of Intra-Polarization Skew for PolMux Signals
Pseudo-Return-to-Zero Modulation Scheme Compensation Intra-Polarization Skew PolMux Signals
2015/7/15
We demonstrate a precise skew monitoring between multiplexed polarizations, demultiplexed polarization discrimination and large-PMD tolerance enhancement for 110Gbit/s PolMux-QPSK signal, by introduci...
Performance of Parametric Wavelength Exchange for Narrow Pulse Width Return-to-Zero Signal
Parametric Wavelength Exchange Narrow Pulse Return-to-Zero Signal
2015/7/14
We demonstrate the parametric wavelength exchange for 10-Gb/s RZ and NRZ signals. The narrow pulse width of the exchanged RZ signal indicates that CW or quasi-CW pumps are capable of handling with ult...