搜索结果: 1-15 共查到“光学工程 Direct-Detection”相关记录20条 . 查询时间(0.25 秒)
Towards 400GBASE 4-lane Solution Using Direct Detection of MultiCAP Signal in 14 GHz Bandwidth per Lane
Towards 400GBASE 4-lane MultiCAP Signal 14 GHz Bandwidth per Lane
2014/11/6
We report on an experimental demonstration of 102 Gbit/s transmission over a 15km single wavelength and polarization fiber link with 14GHz 3dB bandwidth. Novel multi-band CAP signaling allows for a 4-...
High-speed Fading-free Direct Detection for DoubleSideband OFDM Signal via Block-wise Phase Switching
High-speed Fading-free Direct Detection Double Sideband OFDM Signal Block-wise Phase Switching
2014/11/6
We employ phase switching of either main-carrier or subcarriers of two consecutive signal blocks for double-sideband fading-free direct-detection (DD). In so doing, 40-Gb/s DDOOFDM is successfully rec...
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...
This investigation demonstrates the generation of OFDM-RoF signal using frequency doubling technique for the first time, to the author’s best knowledge. The 4-Gb/s OFDM signal using 16-QAM format modu...
117-Gb/s Optical OFDM Super-channel Transmission over 1200-km SSMF Using Direct Detection and EDFA-Only Amplification
Fiber optics communications Modulation
2011/5/22
With EDFA-only amplification, we successfully demonstrate the transmission of a 4-QAM, 117-Gb/s (100 Gb/s without overhead) DDO-OFDM super-channel over 1200-km SSMF with only 1-dB OSNR penalty. We als...
Transmission of 111 Gb/s on a 50 GHz Grid Using Single Polarization, Direct Detection and Digital Subcarrier Multiplexing
Fiber optics and optical communications Modulation Multiplexing
2011/5/20
Digital Subcarrier Multiplexing (DSM) allows simple direct detection of spectrally effi-cient multicarrier signals. We show through simulations that, by using DSM, the quality of DWDM transmission wit...
Recent Progress on Real-Time DSP for Direct Detection Optical OFDM Transceivers
Recent Progress Real-Time DSP Direct Detection Optical OFDM Transceivers
2011/5/20
We describe recent developments in real-time digital signal processing for direct detection optical OFDM transceivers, including the optimization of high throughput FFT algorithms and receiver synchro...
100 Gb/s Photoreceivers for Coherent and Direct Detection
100 Gb/s Photoreceivers Coherent Direct Detection
2011/5/20
Photoreceivers for coherent and direct detection of 100 Gb/s data rates, consisting either of 90° optical hybrids integrated with pairs of balanced detectors forming coherent QPSK photoreceiver OEICs,...
64/32/16QAM-OFDM using Direct-Detection for 40G-OFDMA-PON Downstream
64/32/16QAM-OFDM Direct-Detection 40G-OFDMA-PON Downstream
2011/5/20
A 43.6Gb/s downstream OFDMA-PON is demonstrated using optical single-side band 64/32/16QAMOFDM signals and direct-detection receiver through 20km SSMF. Only one photodiode/OFDM receiver is required at...
Compensating XPM for 100 Gbit/s coherent channels with 10 Gbit/s direct-detection NRZ neighbors
Fiber optics communications Modulation
2010/6/9
We propose a simple optoelectronic method to compensate for cross-phase modulation in long-haul systems. Simulations show >1.3 dB improvement in Q for 1200-km 40 and 100-Gbit/s CO-QPSK and CO-OFDM cha...
A Digital Subcarrier Multiplexing Technique for Increased Spectral Efficiency in Optical Systems Using Direct Detection
Fiber optics optical communications Modulation Multiplexing
2010/6/8
We propose a novel technique that allows direct detection of multicarrier signals without using DSP at the receiver. Performance at 55.5 Gb/s, back-to-back and after 1040 km of dispersion uncompensate...
Optical Biasing in Direct Detection Optical-OFDM for Improving Receiver Sensitivity
Fiber optics communications Modulation
2010/6/4
We show that replacing of electrical by an optical biasing minimizes the nonlinearity effect of an optical modulator. This allows the amplitude of the driving signal to be increased which increases th...
A Novel Optical Direct-Detection I/Q Up-Conversion with I/Q Imbalance Compensation via Gram-Schmidt Orthogonalization Procedure
Novel Optical I/Q Imbalance Compensation Gram-Schmidt Orthogonalization Procedure
2009/7/20
We proposed RF detect-detection vector signal generation using optical I/Q up-conversion. The Gram–Schmidt orthogonalization procedure is employed to compensate I/Q imbalance. After transmission over ...
Nonlinear Behaviour of 112 Gb/s Polarisation-Multiplexed RZ-DQPSK with Direct Detection in a 630 km Field Trial
Nonlinear Behaviour Polarisation-Multiplexed RZ-DQPSK Direct Detection Field Trial
2009/7/15
PM-RZ-DQPSK with direct detection and fast optical polarisation tracking achieves 6dB noise margin over a long-haul field link. The crosstalk by 10&40G OOK channels at 50GHz spacing is analysed for hi...
Polarization Multiplexed 100 Gbps Direct-Detection OFDM Transmission without MIMO Processing
Polarization Multiplexed Direct-Detection OFDM Transmission MIMO Processing
2009/7/14
We propose a low-overhead method of polarization multiplexing in direct detection OFDM that requires no digital MIMO processing. Using 16QAM and only 31GHz bandwidth, 100 Gbps transmission over 80 km ...