搜索结果: 1-14 共查到“光学工程 Demodulation”相关记录14条 . 查询时间(0.06 秒)
A fiber loop mirror temperature sensor demodulation technique using a long-period grating in a photonic crystal fiber and a band-pass filter
fiber loop mirror temperature sensor demodulation technique a long-period grating in a photonic crystal fiber a band-pass filter
2013/5/27
A fiber loop mirror (FLM) temperature sensor using a long-period grating (LPG) written in a photonic crystal fiber (PCF) and a band-pass filter as a demodulator is proposed. By utilizing the stable fi...
Reduction of XPM penalty by sub-bit delay demodulation of DQPSK
Phase modulation Fiber optics communications
2015/6/8
We show that using a shortened delay in the demodulator for DQPSK channels can significantly reduce the XPM penalties caused by transmitting 40Gb/s DQPSK channels alongside 10Gb/s OOK channels.
Digital Optical Phase Locked Loop for Real-Time Coherent Demodulation of Multilevel PSK/QAM
Optical communications Coherent communications
2015/6/8
We propose a digital optical phase locked loop (DOPLL) for real-time demodulation of high-speed multilevel PSK/QAM. It was simply implemented using low-speed digital signal processor after electrical ...
Optical Phase-Modulated Radio-over-Fiber Links with K-means Algorithm for Digital Demodulation of 8PSK Subcarrier Multiplexed Signals
Coherent communications Phase modulation
2015/6/5
A k-means algorithm for phase recovery of three, 50 Mbaud, 8PSK subcarrier multiplexed signals at 5 GHz for optical phase-modulated radio-over-fiber is proposed and experimentally demonstrated after 4...
Radio Frequency Transparent Demodulation for Broadband Wireless Links
Modulation Radio frequency photonics
2015/6/5
Novel demodulation technique for radio over fiber systems, transparent to RF carrier frequency, employing coherent detection and baseband digital signal processing is presented for the first time. Mul...
Tunable Free Space Optical Delay Interferometer for Demodulation of Differential Phase Shift Keying Signals
Phase modulation Interferometry
2015/6/4
With a continuously tunable free space optical delay interferometer and direct detection D(Q)PSK signals can be received at varying symbol rates or under optimized conditions. The in-terferometer’s ph...
Coherent Demodulation of 10-Gb/s Optical Minimum-Shift Keying
Optical communications Coherent communications
2015/6/4
We propose and demonstrate a digital coherent detection scheme for demodulation of optical MSK signal. A 10-Gb/s MSK signal synthesized by using a quad Mach-Zehnder in-phase/quadrature modulator was e...
Compact and Broadband Coherent Receiver Front-End for Complete Demodulation of a 1.12-Terabit/s Multi-Carrier PDM-QPSK Signal
Broadband Coherent Receiver Multi-Carrier PDM-QPSK Signal
2015/7/20
We report a compact coherent receiver front-end consisting of an integrated 4x40 arrayed-waveguide-grating array following a polarization-diversity hybrid for complete demodulation of a 1.12-Tb/s mult...
Experimental 2.5 Gbit/s QPSK WDM Coherent Phase Modulated Radio- over-Fibre Link with Digital Demodulation by a K-means Algorithm
QPSK WDM Coherent Phase Modulated Radio- over-Fibre Link Digital Demodulation K-means Algorithm
2015/7/17
Highest reported bit rate of 2.5 Gbit/s for optically phase modulated radio-over-fibre link employing coherent detection is demonstrated. Demodulation of 3x2.5 Gbit/s QPSK modulated WDM channels, is a...
Simultaneous WDM-DQPSK Demodulation With a Single AWG
Simultaneous WDM-DQPSK Demodulation Single AWG
2015/7/15
We experimentally demonstrate simultaneous demodulation of wavelength division multiplexed (WDM)DQPSK signals with a single arrayed waveguide grating (AWG). We then compare this receiver to the conven...
Experimental comparison between optimized fiber Bragg grating and delay-line interferometer for DPSK signal demodulation
between optimized fiber Bragg delay-line interferometer DPSK signal demodulation
2015/8/4
10Gb/s DPSK demodulation effectiveness of a suitably-designed FBG structure is compared with the performance achieved by a compact integrated-optic MZDI. BER measures versus operation stability are re...
Experimental investigation of partial demodulation of 85.3 Gb/s DQPSK signals
partial demodulation DQPSK signals
2015/7/31
We experimentally assessed the performance of partial DQPSK at 85.3 Gb/s, and demonstrated improved tolerance to ASE noise, chromatic dispersion and fibre nonlinearity in comparison to conventional DQ...
Wavelength Transparent DPSK Demodulation Using Delay-Asymmetric Nonlinear Loop Mirror
Wavelength Transparent DPSK Demodulation Delay-Asymmetric Nonlinear Loop Mirror
2015/7/31
Wavelength transparent DPSK demodulation is demonstrated using the delay-asymmetric nonlinear loop mirror(DANLM). The operation is explained by wavelength-dependent optical path difference between the...
Demodulation of 480-Gbit/s 8PSK OTDM Signal with Digital Coherent Receiver
Demodulation OTDM Signal Digital Coherent Receiver
2015/7/30
We demodulate a 480-Gbit/s 8PSK signal with a digital coherent receiver having time-division demultiplexing function. The receiver sensitivity is -20 dBm at BER of 10 -5 .