scholarly journals Channel model and the achievable information rates of the optical nonlinear frequency division-multiplexed systems employing continuous b-modulation

2021 ◽  
Vol 29 (5) ◽  
pp. 6384
Author(s):  
Stanislav Derevyanko ◽  
Muyiwa Balogun ◽  
Ofer Aluf ◽  
Dmitry Shepelsky ◽  
Jaroslaw E. Prilepsky
Keyword(s):  
Channel Model ◽  
Nonlinear Frequency ◽  
Frequency Division ◽  
Information Rates

scholarly journals Bounds on the Transmit Power of b-Modulated NFDM Systems in Anomalous Dispersion Fiber

Entropy ◽  
2020 ◽  
Vol 22 (6) ◽  
pp. 639 ◽  
Author(s):  
Shrinivas Chimmalgi ◽  
Sander Wahls
Keyword(s):  
Upper Bound ◽  
Fiber Optic ◽  
Anomalous Dispersion ◽  
Signal Duration ◽  
Nonlinear Frequency ◽  
Frequency Division ◽  
Signal To Noise ◽  
Transmit Power ◽  
Spectral Singularities ◽  
Nonlinear Spectrum

The performance of various nonlinear frequency division multiplexed (NFDM) fiber-optic transmission systems has been observed to decrease with increasing signal duration. For a class of NFDM systems known as b-modulators, we show that the nonlinear bandwidth, signal duration, and power are coupled when singularities in the nonlinear spectrum are avoided. When the nonlinear bandwidth is fixed, the coupling results in an upper bound on the transmit power that decreases with increasing signal duration. Signal-to-noise ratios are consequently expected to decrease, which can help explain drops in performance observed in practice. Furthermore, we show that there is often a finite bound on the transmit power of b-modulators even if spectral singularities are allowed.

Nonlinear Frequency Division Multiplexed Transmissions Based on NFT

2015 ◽  
Vol 27 (15) ◽  
pp. 1621-1623 ◽  
Author(s):  
Zhenhua Dong ◽  
Siddarth Hari ◽  
Tao Gui ◽  
Kangping Zhong ◽  
Mansoor Isvand Yousefi ◽  
...  
Keyword(s):  
Nonlinear Frequency ◽  
Frequency Division

scholarly journals Mitigating the Impact of Noise on Nonlinear Frequency Division Multiplexing

2020 ◽  
Vol 10 (24) ◽  
pp. 9099
Author(s):  
Stella Civelli ◽  
Enrico Forestieri ◽  
Marco Secondini
Keyword(s):  
Dispersion Compensation ◽  
Kerr Nonlinearity ◽  
Optical Fiber Communication ◽  
Frequency Division Multiplexing ◽  
Nonlinear Frequency ◽  
Frequency Division ◽  
Fiber Communication ◽  
Range Rate ◽  
Conventional Systems ◽  
The Impact

In the past years, nonlinear frequency division multiplexing (NFDM) has been investigated as a potentially revolutionary technique for nonlinear optical fiber communication. However, while NFDM is able to exploit the Kerr nonlinearity, its performance lags behind that of conventional systems. In this work, we first highlight that current implementations of NFDM are strongly suboptimal, and, consequently, oversensitive to noise: the modulation does not ensure a large minimum distance between waveforms, while the detection is not tailored to the statistics of noise. Next, we discuss improved detections strategies and modulation techniques, proposing some effective approaches able to improve NFDM. Different flavors of NFDM are compared through simulations, showing that (i) the NFDM performance can be significantly improved by employing more effective detection strategies, with a 5.6 dB gain in Q-factor obtained with the best strategy compared to the standard strategy; (ii) an additional gain of 2.7 dB is obtained by means of a simple power-tilt modulation strategy, bringing the total gain with respect to standard NFDM to 8.3 dB; and (iii) under some parameters range (rate efficiency η≤30%), the combination of improved modulation and detection allows NFDM to outperform conventional systems using electronic dispersion compensation.

scholarly journals Spectral function modulation based on nonlinear frequency division multiplexing

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Guangqiang He ◽  
Luning Wang ◽  
Chenyang Li ◽  
Siyu Liu ◽  
Weisheng Hu
Keyword(s):  
Spectral Function ◽  
Frequency Division Multiplexing ◽  
Nonlinear Frequency ◽  
Frequency Division
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