搜索结果: 121-135 共查到“光学工程 systems”相关记录185条 . 查询时间(0.16 秒)
Simultaneous Broadband Wired/Millimeter-Wave Band Transmission with Broadcasting Signal Using Direct ASE Modulation of an RSOA for WDM/SCM-PON Systems
Broadband Wired/Millimeter-Wave Band Transmission Broadcasting Signal RSOA for WDM/SCM-PON Systems
2015/7/17
A novel scheme of simultaneous broadband data transmission for both wired and millimeter-wave band with broadcasting signal is proposed based on a directly modulated amplified spontaneous emission usi...
Polarization-Multiplexed Multilevel LDPC-Coded Modulation for Optical Communication Systems
Polarization-Multiplexed Multilevel LDPC-Coded Modulation Optical Communication Systems
2015/7/17
Polarization-multiplexed coded-modulation, with joint coherent MAP detection and soft-iterative decoding, which considers independent symbols transmitted over both polarizations as a super-symbol is p...
Realization of Optical OFDM Using Time Lenses and Its Comparison with Conventional OFDM for Fiber-optic Systems
Realization Conventional OFDM Fiber-optic Systems
2015/7/17
It is proposed to use Fourier transforms in optical domain using time lenses both at transmitter and at receiver to realize optical OFDM. Results show that coherent OFDM systems have higher nonlinear ...
Electronic Equalization of Polarization Mode Dispersion in Coherent POL-MUX QPSK Systems
Electronic Equalization Polarization Mode Dispersion Coherent POL-MUX QPSK Systems
2015/7/17
We present a comparison of adaptive electronic PMD equalizers for coherent phase - and polarization-diversity QPSK receivers using the multicanonical Monte Carlo method . A 5-tap equalizer using the C...
Nonlinear Phase Noise Mitigation by Polarization Mode Dispersion in Dispersion Managed coherent PDM-QPSK Systems
Nonlinear Phase Noise Mitigation Polarization Mode Dispersion Dispersion Managed coherent PDM-QPSK Systems
2015/7/17
We show by simulation that PMD helps reduce nonlinear phase noise in single-channel coherent PDM-QPSK systems at both 43 and 112 Gbit/s, with improved resilience at 112 Gbit/s.
Suppression of Inter-Channel Nonlinearities in WDM Coherent PDM- QPSK Systems Using Periodic-Group-Delay Dispersion Compensators
Inter-Channel Nonlinearities WDM Coherent PDM- QPSK Systems Periodic-Group-Delay
2015/7/17
We show that periodic-group-delay dispersion compensators can significantly suppress inter-channel nonlinearities in a WDM coherent polarization-division-multiplexed quardrature-phase-shift-keying sys...
Scaling of Nonlinear Threshold in WDM Transmission Systems using Electronic Precompensation of Intrachannel Nonlinearities
Nonlinear Threshold WDM Transmission Systems Electronic Precompensation Intrachannel Nonlinearities
2015/7/17
A simple criterion is presented which describes the impact of interchannel nonlinearities in wavelength-division multiplexing systems with electronic precompensation of intrachannel nonlinearities. Fu...
Subcarrier selection mitigates the need for suppression of one sideband at the transmitter side for Intensity Modulation/Direct Detection OFDM systems caused by group velocity dispersion of the fiber ...
Accurate Digital Frequency Offset Estimator for Coherent PolMux QAM Transmission Systems
Accurate Digital Frequency Offset Estimator PolMux QAM Transmission Systems
2015/7/17
An accurate blind frequency offset estimator adapted to QAM modulated signal is proposed. For coherent 100Gbit/s QAM PolMux transmission, frequency offset can be recovered with an accuracy of a few kH...
Efficient Interleaving of FEC Codewords for Optical PSK Systems
Efficient Interleaving FEC Codewords Optical PSK Systems
2015/7/17
Differential encoding is required for phase modulation optical transmission systems but leads to higher bit error rate. We propose a construction of the codeword of the forward error correction allowi...
Evaluation of Fiber Fuse Characteristics of Hole-Assisted Fiber for High Power Optical Transmission Systems
Fiber Fuse Characteristics Hole-Assisted Fiber High Power Optical Transmission Systems
2015/7/16
We evaluate fiber fuse characteristics of bend-insensitive optical fibers and show that hole-assisted fiber(HAF) is applicable as fiber fuse stopper in high-power optical transmission systems. We also...
Fast SOP Variation Measurement on WDM Systems Are the OPMDC Fast Enough?
Fast SOP Variation Measurement WDM Systems Are OPMDC
2015/7/16
Orange Labs organized a 6 month field trial to characterize states of polarization (SOP) variations with time on representative links of the future 40 Gbit/s deployment and to enable specifying the ad...
The signal and local oscillator acquire identical nonlinear phase shifts during propagation in a self-homodyne coherent system. We exploit this to achieve cancellation of the phase distortion caused b...
10.3Gb/s burst-mode 3R receiver incorporating full AGC optical receiver and 82.5GS/s sampling CDR for 10G-EPON systems
receiver incorporating AGC optical receiver CDR 10G-EPON systems
2015/7/16
10.3Gb/s burst-mode 3R receiver incorporating full AGC optical receiver and 82.5GS/s sampling CDR for 10G-EPON is, for the first time, developed. Burst receiver sensitivity of -30.1dBm and upstream po...
Analysis and Dimensioning of Fully Digital Clock Recovery for 112 Gb/s Coherent Polmux QPSK Systems
Fully Digital Clock Recovery Coherent Polmux QPSK Systems
2015/7/16
Combined effect of polarization mixing and Differential Group Delay (DGD) on sinusoidal and random jitter tolerance is investigated. Requirements for tolerable DGD, loop bandwidth and loop delay are e...