Results 121 to 130 of about 10,164 (270)

Optical Wavelength Converters Based on Four Wave Mixing in SOA-MZI Configuration

MATEC Web of Conferences, 2016
Wavelength converter plays an important role for increasing the capacity and flexibility of future broadcast network. This paper investigates the performance of a 10Gb/s the SOA based FWM wavelength converter.
Rajni, Sheetal Anu
doaj   +1 more source

Partial DPSK with excellent filter tolerance and OSNR sensitivity

Electronics Letters, 2006
Tolerance to optical filtering of a DPSK system can be increased significantly by decreasing the differential delay of the traditional MZI-demodulator to less than one bit-period. It is shown that a 43 Gbit/s DPSK signal can support 50 GHz channel spacing if the delay is decreased to 65% of a bit-period.
B. Mikkelsen, C. Rasmussen, P. Mamyshev, F. Liu   +3 more
openaire   +1 more source

Extreme Outages due to Polarization Mode Dispersion

, 2003
We investigate the dependence of the bit-error-rate (BER) caused by amplifier noise in a linear optical fiber telecommunication system on the fiber birefringence.
Andresciani, Bergano, Biondini, Bülow, Eyal, Igor Kolokolov, Kaminow, Kogelnik, Machida, Michael Chertkov, Poole, Poole, Poole, Poole, Rashleigh, Ulrich, Vladimir Chernyak, Vladimir Lebedev, Xie   +18 more
core   +1 more source

Análise de Influência do Ruído Térmico e Filtragem Elétrica em Técnicas de Monitoração de OSNR Digital [PDF]

, 2011
Vítor H. Nascimento, João Januário, J. S. J. S. Oliveira   +2 more
openalex   +1 more source

Multi-wavelength in-band OSNR monitor based on Lyot-Sagnac interferometer

Optics Express, 2015
A novel in-band OSNR monitor is proposed and experimentally demonstrated for WDM signal. By using a Lyot-Sagnac interferometer, the monitor realized OSNR measurement from 7.5~25 dB (within an accuracy of ± 0.5 dB) for 4-channel 40 Gbaud NRZ-QPSK signals, without requirement for prior knowledge of the noise-free coherence properties of signal.
Jifang, Qiu, Zhuili, Huang, Bo, Yuan, Na, An, Deming, Kong, Jian, Wu   +5 more
openaire   +2 more sources

ASE Noise in Raman Amplifiers: Pump Depletion Impact [PDF]

Radioengineering, 2018
This paper provides a detailed analysis for the effect of pump depletion on amplified spontaneous emission (ASE) noise power, optical signal to noise ratio (OSNR), and noise figure (NF) in forward pumped distributed Raman fiber amplifier (DRFA).
S. E. Darwish, A. S. Samra, M. H. Aly
doaj  

OSNR and dispersion tolerance of FWM based optical carrier recovery scheme [PDF]

, 2020
Sachinthani Alahakoon, Dushani Munasinghe, Gresha S. Samarakkody, Ruwan Weerasuriya   +3 more
openalex   +1 more source

A Simple Joint Modulation Format Identification and OSNR Monitoring Scheme for IMDD OOFDM Transceivers Using K-Nearest Neighbor Algorithm

Applied Sciences, 2019
In this study, a joint modulation format identification and optical signal-to-noise ratio (OSNR) monitoring algorithm is proposed and experimentally demonstrated using the k-nearest neighbor algorithm for intensity modulation and direct detection (IMDD ...
Qianwu Zhang, Hai Zhou, Yuntong Jiang, B. Cao, Yingchun Li, Yingxiong Song, Jian Chen, Junjie Zhang, Min Wang   +8 more
semanticscholar   +1 more source

基于信号功率非线性变换的光信噪比监测

Guangtongxin yanjiu, 2019
基于信号功率非线性变换,结合神经网络,文章提出了一种利用深度神经网络（DNN）实现光信噪比（OSNR）监测的方法。通过对信号功率、信号2次方、4次方和8次方运算后对应的快速傅里叶变换（FFT）后的幅度获取信号与OSNR相关特征量,并利用DNN提取相关特征量以实现OSNR监测。仿真结果表明,针对28 Gbaud偏振复用（PDM）正交相移键控（QPSK）、PDM-8相移键控（PSK）、PDM-8正交振幅调制（QAM）和PDM-16QAM信号相干光通信系统,对应的背靠背OSNR监测平均标准误差分别为0.10 ...
刘恒江, 易安林
doaj  

Deep Learning Equalizer Connected with Viterbi-Viterbi Algorithm for PAM D-Band Radio over Fiber Link. [PDF]

Sensors (Basel), 2023
Xie T, Sheng Q, Yu J.
europepmc   +1 more source