搜索结果: 1-15 共查到“光学工程 vector”相关记录22条 . 查询时间(0.093 秒)
Small-Form-Factor All-InP Integrated Laser Vector Modulator Enables the Generation and Transmission of 256-Gb/s PDM-16QAM Modulation Format
Small-Form-Factor All-InP Integrated Laser Vector Modulator Enables the Generation Transmission of 256-Gb/s PDM-16 QAM Modulation Format
2014/11/6
We demonstrate, using a compact InP-based integrated assembly of a tunable laser and a double-nested Mach-Zehnder modulator, generation of Nyquist-prefiltered QPSK and 16-QAM signals at 32-Gbaud. We t...
RADIO-OVER-FIBER (ROF) systems have attracted much interest for potential use in future broadband wireless communications. Essential to ROF systems is the ability to generate and transmit optical radi...
Following the accelerated development of wireless communications, efficient and costeffective methods of generating and transmitting microwave and millimeter-wave signals are increasingly important. T...
Hybrid Access Network Integrated With Wireless Multilevel Vector and Wired Baseband Signals Using Frequency Doubling and No Optical Filtering
EXPERIMENTAL SETUP optical power Wireless Multilevel Vector
2011/11/17
FIBER-TO-THE-x (FTTx) have been widely constructed for high data rate wired services to provide triple-play services including voice, data, and video [1]. On the other hand, radio-over-fiber (RoF) tec...
A Prototype of Signal Degradation Monitor Based on Wavelength Resolved Stokes Vector Analysis Featuring a Function of Identification of the Cause of Degradation
Optical communications Networks
2015/5/26
We resolved signal degradations due to DGD and OSNR from a single monitor source.We verified a precision of +/-0.2dB of Q-value experimentally with a monitor prototype and 160Gb/s signal.
SOA/REAM as Vector Modulator for QAM Upstream
Fiber optics communications Modulation Semiconductor optical amplifiers
2015/5/21
Simultaneous encoding of information in the optical phase and amplitude for upstream transmission is demonstrated with an integrated SOA/REAM of small form factor. The crosstalk penalties between the ...
Multi-band 16QAM-OFDM Vector Signal Delivery over 60-GHz DSB-SC Optical Millimeter-Wave through LO Enhancement
Multi-band 16QAM-OFDM Vector Signal Delivery 60-GHz DSB-SC
2015/5/21
For the first time, multi-band vector signal delivery over DSB-SC RoF system generated via single-stage optical upconversion has been accomplished through LO power enhancement, and was successfully de...
Time-Resolved Error Vector Magnitude for Transmitter Mask Testing in Coherent Optical Transmission Systems
Time-Resolved Optical Transmission Systems Mask Testing
2015/5/15
We propose a novel transition-sensitive measurement approach for coherent optical systems. The time-resolved error vector magnitude (EVM), combined with mask testing, is a powerful tool for pass/fail ...
Vector Signal Transmission in Radio-Over-Fiber Link Employing Optical Multi-Sidebands Modulation Scheme
Fiber optics communications Radio frequency photonics
2015/6/5
We propose theoretically and experimentally demonstrate a radio-over-fiber link employing optical multi-sidebands modulation to transmit vector signals, with the advantages of overcoming dispersion-in...
What we believe to be a novel fiber-optical inclinometer based on a dual-path core-to-cladding mode coupling mechanism is demonstrated. Both the amplitude and tilt direction of bends about a 2-mm-long...
Fisher’s linear discriminant (FLD) and support vector machine (SVM) in non-negative matrix factorization (NMF) residual space for face recognition
face recognition Fisher linear discriminant non-negative matrix factorization residual image
2011/5/9
A novel method of Fisher’s linear discriminant (FLD) in the residual space is put forward for
the representation of face images for face recognition, which is robust to the slight local
feature chan...
Propagation of cylindrical vector beams in a turbulent atmosphere
cylindrical vector beams turbulent atmosphere propagation properties
2013/7/2
Based on the extended Huygens–Fresnel principle, the propagation of cylindrical vector beams in a turbulent atmosphere is investigated. The intensity distribution and the polarization degree of beams ...
Wave-vector space picture for radiationless focusing and beaming
Wave-vector space picture radiationless focusing beaming
2015/8/10
Radiationless interference of an electromagnetic wave occurs in the near field when the feature sizes of the waves are at the deep subwavelength scale. We present the propagation in such a regim...
Complete Characterization of PMD Vector through Time-resolved Waveform Analysis Based on xy-field Sampling
PMD Vector Time-resolved Waveform Analysis xy-field Sampling
2015/7/20
We develop a method for characterizing PMD vector including high-order components through temporal waveform analysis based on xy-field sampling. Simultaneous monitoring of PMD vector and eye diagram o...
In-service Monitoring of PMD Induced Optical Signal Degradation Using SOP Vector Trajectory on the Poincare Sphere for High-Speed Reconfigurable Optical Networks
PMD Induced Optical Signal Degradation SOP Vector Trajectory Poincare Sphere High-Speed Reconfigurable Optical Networks
2015/7/20
We studied an in-service signal quality estimation method by using wavelength resolved SOP vector trajectories on Poincare Sphere and successfully distinguished PMD induced signal degradation with suf...