scholarly journals Wide-range optical carrier recovery via broadened Brillouin filters

2021 ◽  
Vol 46 (2) ◽  
pp. 166
Author(s):  
Atiyeh Zarifi ◽  
Moritz Merklein ◽  
Yang Liu ◽  
Amol Choudhary ◽  
Benjamin J. Eggleton ◽  
...  
Keyword(s):  
Carrier Recovery ◽  
Optical Carrier ◽  
Wide Range

Optical Time Domain Filter Based on Multimode Optical Fiber and Its Application in All Optical Carrier Recovery

2019 ◽  
Vol 40 (9) ◽  
pp. 1192-1199
Author(s):  
高洪培 GAO Hong-pei ◽  
谭中伟 TAN Zhong-wei ◽  
付 超 FU Chao
Keyword(s):  
Optical Fiber ◽  
Time Domain ◽  
Carrier Recovery ◽  
Optical Carrier ◽  
Multimode Optical Fiber ◽  
All Optical ◽  
Optical Time

Feed-Forward Optical Carrier Recovery for QAM Coherent Optical Receivers

2012 ◽  
Vol 33 (3) ◽  
Author(s):  
Fangzheng Zhang ◽  
Jian Wu ◽  
Yan Li ◽  
Kun Xu ◽  
Jintong Lin
Keyword(s):  
Optical Receivers ◽  
Carrier Recovery ◽  
Optical Carrier ◽  
Feed Forward

An All-Optical Carrier Recovery Scheme for Access Networks With Simple ASK Modulation

2011 ◽  
Vol 3 (9) ◽  
pp. 704 ◽  
Author(s):  
Bernhard Schrenk ◽  
Paraskevas Bakopoulos ◽  
Efstratios Kehayas ◽  
Alexandros Maziotis ◽  
Jose A. Lazaro ◽  
...  
Keyword(s):  
Access Networks ◽  
Carrier Recovery ◽  
Optical Carrier ◽  
All Optical ◽  
Recovery Scheme

EDFA-band Coverage Broadband SBS Filter for Optical Carrier Recovery

2020 ◽  
Author(s):  
Atiyeh Zarifi ◽  
Moritz Merklein ◽  
Yang Liu ◽  
Amol Choudhary ◽  
Benjamin J. Eggleton ◽  
...  
Keyword(s):  
Carrier Recovery ◽  
Optical Carrier

All-Optical Carrier Recovery with Periodic Optical Filtering for Wavelength Reuse in RSOA-based Colorless Optical Network Units in Full-Duplex 10Gbps WDM-PONs

2010 ◽  
Author(s):  
Efstratios Kehayas ◽  
Bernhard Schrenk ◽  
Paraskevas Bakopoulos ◽  
Jose A. Lazaro ◽  
Alexandros Maziotis ◽  
...  
Keyword(s):  
Optical Network ◽  
Full Duplex ◽  
Carrier Recovery ◽  
Optical Carrier ◽  
Optical Filtering ◽  
Wavelength Reuse ◽  
All Optical

scholarly journals Iteration Bayesian Reweighed Algorithm for Optical Carrier-Based Microwave Interferometry Sensing

Sensors ◽  
2020 ◽  
Vol 20 (11) ◽  
pp. 3079
Author(s):  
Yuxiao Li ◽  
Ciming Zhou ◽  
Dian Fan ◽  
Sijing Liang ◽  
Li Qian
Keyword(s):  
Measurement Data ◽  
Measured Data ◽  
Frequency Fluctuation ◽  
Average Error ◽  
Optical Carrier ◽  
True Value ◽  
S Parameter ◽  
Wide Range ◽  
Microwave Interferometry ◽  
The Impact

This paper proposes a novel iteration Bayesian reweighed (IBR) algorithm to obtain accurate estimates of a measurement parameter that uses only a few noisy measurement data. The method is applied to optimize the frequency fluctuation in an optical carrier-based microwave interferometry (OCMI) system. The algorithm iteratively estimates the frequency of the S-parameter valley point by collecting training samples to rebalance the weights between prior samples, which reduces the impact of noise in the system. Simulation shows that the estimated result of this algorithm is closer to the true value than that of the maximum likelihood estimation (MLE) using the same amount of measured data. Under the influence of system noise, this algorithm optimizes the frequency fluctuation of the S-parameter and reduces the impact of individual measured data. In this study, we applied the algorithm in the strain sensing experiment and compared it with the MLE. When axial strain changes 240 με, the IBR algorithm yields a deviation of 36 με, which is a significant reduction from 138 με (using the MLE method). Moreover, the average error rate decreases from 25% to 3% (with the MLE method), suggesting that the linear fitting degree of the estimated results and accuracy of the system are improved. Moreover, the algorithm has a wide range of applicability, for it can handle different application models in the OCMI system and the systems with frequency fluctuation problems.

scholarly journals Widely Tunable Single-Passband Microwave Photonic Filter Based on DFB-SOA-Assisted Optical Carrier Recovery

2015 ◽  
Vol 7 (5) ◽  
pp. 1-8 ◽  
Author(s):  
Ye Deng ◽  
Ming Li ◽  
Jian Tang ◽  
Shuqian Sun ◽  
Ningbo Huang ◽  
...  
Keyword(s):  
Carrier Recovery ◽  
Optical Carrier ◽  
Microwave Photonic

Into the world of economic broadband systems

1978 ◽  
Vol 289 (1356) ◽  
pp. 29-41 ◽  
Keyword(s):  
Wide Band ◽  
Telecommunications Industry ◽  
Added Value ◽  
Optical Carrier ◽  
National Network ◽  
Latent Demand ◽  
Growth Opportunity ◽  
Wide Range ◽  
Total Communication ◽  
Wide Band Transmission

The advance of technology heralds changes to the structure of the telecommunications industry. Electronic components will form an increasing proportion of system hardware and there will be fewer components specialized for telecommunications. Equipment hardware will reduce in size and added value but the software content will become significantly higher. With development and engineering being a major and increasing proportion of costs, there is need to concentrate national resources to provide designs which are both competitive in the export field and meet the operational needs of the national network. Whereas speech is still the predominant medium, the forward trend will be to converge speech and data into a total communication package. Technology already provides the potential for the provision of a wide range of services providing growth opportunity in peripheral equipment and greater utilization of the main network. The greatest innovation will be the satisfaction of the latent demand for very wide band transmission through an overlay network using optical carrier technology and this will lead to new dimensions in telecommunications.

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