搜索结果: 1-15 共查到“光学工程 h/d ratio”相关记录15条 . 查询时间(0.022 秒)
Analysis of the Impact of P-Ratio on BER, Q-Factor and OSNR of Radio over Fiber (RoF) System
Rof System OSNR Parameter BER Q-Parameter Fiber Dispersion Matlab 7.0
2013/1/30
The impact of p-ratio i.e. ratio of carrier power to total received RF power at control office (CO) on Bit error rate (BER), Q- performance parameter and Optical signal noise ratio (OSNR) of RoF commu...
Impact of ADC Bandwidth and Clipping Ratio on COF-PON Systems Based on Spatial Coding and Subcarrier Multiplexing
Analog-to-digital convertor (ADC) clipping ratio code-division-multiplexing (CDM) passive optical networks (PON) subcarrier multiplexing
2016/12/2
In this paper, we analyze the impact of analog-to digital convertor (ADC) bandwidth and clipping ratio on the performance of a 1 Gb/s x 15 user CDM-over-fiber-PON (COF PON) system based on 16-QAM modu...
Optimization of Duty Ratio of Metallic Grating Arrays for Infrared Photodetectors
Metallic Gratings, Duty Ratio, Infrared Waveband, QWIP
2013/1/30
Influence of duty ratio of metallic gratings applied in quantum well infrared photodetector (QWIP) with detection ranging from 3 μm to 5 μm was studied in this paper. The influence on longer enhanced ...
Monitoring of Orthogonal Polarization Power Ratio due to PDL using Intensity Tones in Polarization Multiplexed Signals
Fiber optics communications Fiber optics links subsystems
2015/5/25
We demonstrate a technique for monitoring orthogonal polarization power ratio (OPPR) occurring in WDM polarization-multiplexed signals due to PDL. We employ low-frequency intensity tones to estimate t...
1.3 μm all-VCSEL low complexity coherent detection scheme for high bit rate and high splitting ratio PONs
Fiber optics communications Vertical cavity surface emitting lasers Coherent
2015/5/21
Full 1.3 μm VCSEL-based simplified coherent detection receiver is demonstrated at 5 Gbps. Receiver sensitivity of -34 dBm is achieved providing link reach and splitting ratio extension for future pass...
Optical Network Design Algorithms that Consider Optical Path Add/Drop Ratio Restrictions for OXC Hardware Scale Reduction
Optical Network Design Algorithms Hardware Scale Add/Drop Ratio
2015/5/18
We develop network design algorithms that consider constraints on the number of added/dropped optical paths at nodes in terms of wavelength and of fiber. The strategy is demonstrated to significantly ...
Optical Through-Hole With High Aspect Ratio for On-Board Optical Transmission
Optical Optical Transmission On-Board
2015/5/18
We developed optical I/Os in packages for chip-to-chip interconnections. The I/Os of 55-μm-diameter and 1.2-mm-long optical through-holes demonstrate low loss and 10-Gb/s transmission. This package ai...
Techno-economic study of high–splitting ratio PONs and comparison with conventional FTTH-PONs/FTTH-P2P/ FTTB and FTTC deployments
Techno-economic FTTH-PONs/FTTH-P2P/ FTTB FTTC deployments
2015/5/15
We present a techno-economic study on the outside plant costs comparison between the standard FTTH-PON deployments with future high-splitting ratio PONs. The high-splitting ratio PONs are also compare...
Impacts of Waveband Capacity and Waveband Add/Drop Ratio on the Performance of ROADM-Ring Connecting Hierarchical Optical Path Cross-Connects
Networks assignment routing algorithms Networks ring
2015/6/5
We analyze the performance of a multiple-ROADM-ring connected network that utilizes Hierarchical Optical Cross-Connects (HOXC). We clarify the impacts of the waveband capacity and waveband add/drop ra...
Optical Demultiplexing with Extinction Ratio Enhancement Based on Higher Order Parametric Interaction
Optical Demultiplexing Extinction Ratio Enhancement Based Higher Order Parametric Interaction
2015/7/14
We present the experimental demonstration of an all-optical demultiplexer for high speed OTDM data with optical regeneration capability. It is shown that higher order parametric interactions provide o...
Reduced Complexity Precoding Based Peak-to-Average Power Ratio Reduction Applied to Optical Direct-Detection OFDM
Complexity Precoding Power Ratio Optical Direct-Detection OFDM
2015/8/4
DCT based precoding is proposed for PAPR reduction to improve the performance of optical OFDM at limited precoding complexity. Effective PAPR reduction and the resultant OSNR performance are shown.
A Novel Re-modulation Method in a WDM-PON with Enhanced Extinction Ratio
Method WDM-PON Extinction
2015/8/3
We propose and experimentally demonstrate a novel coding scheme for a WDM-PON system using ASK/DPSK re-modulation corresponding to downstream/upstream signals respectively to enhance the toleration of...
Sensitivity of Interferometric OSNR Measurements Techniques to the Variation in Signal Extinction Ratio
Sensitivity Interferometric OSNR Measurements Techniques Variation Signal Extinction Ratio
2015/7/31
We discuss calibration requirements for interferometric OSNR measurements. We show that variation of 0.25dB in the signal extinction ratio could result in large errors in OSNR for 42.8Gb/s modulated s...
Measurement of Non Linear Thresholds in O-OFDM Systems with Respect to Data Pattern and Peak Power to Average Ratio
O-OFDM Systems Respect Peak Power Average Ratio
2015/7/30
We investigated the non linear threshold of a coherent O-OFDM system. An improvement for NLT of about 2.5dB was demonstrated either by reducing the data pattern length or clipping of the OFDM signal.
Study on high signal-to-noise ratio (SNR) silicon p-n junction photodetector
silicon p-n junction photodetector
2011/5/3
On the basis of n-type single-crystal (100) silicon substrate, a silicon p-n junction photodetector has been successfully developed. Three methods to improve photoresponse signal-to-noise ratio (SNR) ...