搜索结果: 1-15 共查到“光学工程 passive”相关记录45条 . 查询时间(0.046 秒)
WAVELET FUSION FOR CONCEALED OBJECT DETECTION USING PASSIVE MILLIMETER WAVE SEQUENCE IMAGES
passive millimeter wave sequence images sum of squared difference wavelet fusion concealed object detection
2018/5/11
PMMW imaging system can create interpretable imagery on the objects concealed under clothing, which gives the great advantage to the security check system. Paper addresses wavelet fusion to detect con...
First OpenFlow-based Software-Defined -Flow Architecture for Flex-Grid OFDMA Mobile Backhaul over Passive Optical Networks with Filterless Direct Detection ONUs
OpenFlow-based Software-Defined Flex-Grid OFDMA Mobile Backhaul Passive Optical Networks Filterless Direct Detection ONUs
2014/11/6
We demonstrate the first software-defined OpenFlow1.0-based flex-grid -flow architecture enabling 150Mb/s per-cell OFDMA MBH overlays onto bidirectional 10Gb/s PON, without any ONU-side optica...
A Novel Scheme for Seamless Integration of ROF System with OFDM-CPM WDM Passive Optical Network
Networks Fiber optics communications
2015/5/26
A novel scheme to generate, transmit and receive an optical OFDM-CPM signal in the architecture for seamless integration of ROF system with 4 × 2.5Gb/s WDM-PON is proposed and experimentally validated...
Full Standard Triple-Play Bi-Directional and Full-Duplex CWDM Transmission in Passive Optical Networks
Fiber optics optical communications All-optical networks
2015/5/25
Bi-directional CWDM radio-over-fiber transmission of triple-format full-standard OFDM signals in coexistence (UWB, WiMAX and LTE) (1.178 Gbit/s full-duplex) is demonstrated over 50.6 km SSMF in passiv...
MT-like Multi layer 48-channel Polymer Waveguide Connector using Novel Passive Alignment Structure
Optics in computing Optical interconnects
2015/5/25
We present MT-like multi-layer 48-channel and 108-channel polymer waveguide array connectors which will become important for high-channel count optical interconnect. We used a novel alignment structur...
Comparison of OFDMA and SC-FDMA Channel Access Techniques in a Passive Optical Network Environment
Comparison OFDMA SC-FDMA Channel Access Techniques Passive Optical Network Environment
2015/5/25
For the first time, OFDMA and SC-FDMA are compared experimentally as candidate uplink access techniques for next-generation PONs. Important issues like peak-to-average power ratio, optical beat interf...
Novel Architectures for Orthogonal Wavelength Division Multiplexed Passive Optical Networks (OWDM-PONs) in a 25-GHz Grid
Networks Optical communications
2015/5/22
A novel orthogonal wavelength-division-multiplexed passive optical network with 25-GHz channel spacing has been proposed and experimentally demonstrated for the first time.Error-free transmission over...
A 10 Gb/s Passive-Components-based WDM-TDM Reconfigurable Optical Access Network Architecture
Optical communications Networks
2015/5/22
We propose a cost-effective, reconfigurable optical access network by employing passive components in the remote node and dual conventional optical transceivers in ONUs. The architecture is demonstrat...
Passive Mode-Locker Incorporating Physically Exfoliated Graphene for Fiber Ring Lasers
Mode-locked laser Nanomaterials Lasers fiber
2015/5/21
A passively mode-locked fiber laser is realized using an intracavity intensity-modulating effect in multilayered graphene efficiently prepared by taping method. 10.6-MHz pulse trains with 40-dB extinc...
New Enabling Technologies for Passive Optical Networks with sustainable growth
Enabling Technologies sustainable growth Passive Optical Network
2015/5/18
This paper describes promising technologies for access networks from an operator’s viewpoint, especially as regards optical cables and transmission through passive optical networks,with a view to the ...
Comparison of Two CS-SSB Modulators Used in Bidirectional Carrier Distributed Long-Reach Passive Optical Network
Two CS-SSB Modulators Carrier Distributed Reach Passive Optical Network
2015/5/18
Two different CS-SSB modulators based on Mach-Zehnder structure used in carrier-distributed long-reach passive optical networks are investigated and compared. The Rayleigh-backscattering beat noise to...
Complete Mitigation of Brillouin Scattering Effects in Reflective Passive Optical Networks using Triple-Format OFDM Radio Signals
Brillouin Scattering Effect Passive Optical Network Triple-Format OFDM Radio Signals
2015/5/18
Brillouin scattering is identified as a severe limitation in narrow line-width,bi-directional reflective systems. A spectrum management mitigation technique for triple-format OFDM signals is demonstra...
Self-protected Scheme for Wavelength Reusable WDM Passive Optical Networks
Wavelength Reusable WDM Passive Optical Network
2015/5/18
We propose a wavelength reusable WDM-PON scheme using protective interconnection fibers to achieve whole optical distribution network protection. 10Gb/s bidirectional transmission is experimentally de...
OTM- and OTDR-based cost-efficient Fiber Fault Identification and Localization in Passive Optical Network
OTM Passive Optical Network OTDR-based cost-efficient Fiber Fault
2015/5/18
PON monitoring based on combined Optical Time Domain Reflectometry (OTDR) and Optical Transceiver Monitoring (OTM) is presented. The results on a 25-km 1:32 PON prove the concept and show ~0.02 dB acc...
Enabling Passive Interfaces for Integrated Optical and Wireless Access Networks
Optical Communications Radio Frequency Photonics
2015/6/10
We propose passive interfaces for integrated optical-wireless access networks incorporating optical-tandem-single-sideband (OTSSB) modulation scheme. The performance of the interfaces is evaluated exp...