TY  - JOUR
T1  - IMPROVING THE LIMITATIONS IN THE CAPACITY OF FIBER OPTICS USING MODIFIED NONLINEAR FOURIER TRANSFORM
AU  - Alı, Qusay Muaad
AU  - Uçan, Osman Nuri
PY  - 2024
DA  - December
Y2  - 2024
DO  - 10.53600/ajesa.863296
JF  - AURUM Journal of Engineering Systems and Architecture
JO  - A-JESA
PB  - Altınbaş University
WT  - DergiPark
SN  - 2564-6397
SP  - 190
EP  - 205
VL  - 8
IS  - 2
LA  - en
AB  - The central objective of this work is to suggest and develop one simple, unified method for communication over optical fiber networks, valid for all values of dispersion and nonlinearity parameters, and for a single-user channel or a multiple-user network. The method is based on the nonlinear Fourier transform (NFT), a powerful tool in soliton theory and exactly solvable models for solving integral partial differential equations governing wave propagation in certain nonlinear media. The NFT related signal degrees of freedom in such models, in much the same way that the Fourier transform does for linear systems. In this thesis, this observation is exploited for data transmission over integral channels such as optical fibers, where pulse propagation is governed by the nonlinear Schödinger (NLS) equation. In this transmission scheme, which can be viewed as a nonlinear analogue of orthogonal frequency-division multiplexing commonly used in linear channels, information is encoded in the nonlinear spectrum of the signal. Just as the (ordinary) Fourier transform converts a linear convolutional channel into a number of parallel scalar channels, the nonlinear Fourier transform converts a nonlinear dispersive channel described by a lax convolution into a number of parallel scalar channels. Since, in the spectral coordinates the NLS equation is multiplicative, users of a network can operate in independent nonlinear frequency bands with no deterministic inter-channel interference.
KW  - Vertical cavity surface emitting laser
KW  - Data transmission
KW  - Fiber optics
KW  - Dispersion shifted fiber
KW  - Power consumption
KW  - Fourier transform
CR  - S. Personick, Fiber Optics. New York, NY: Springer, 2013.
CR  - J. Benzoni and D. Orletsky, Military applications of fiber optics technology. Santa Monica, Calif.: Rand, 1989.
CR  - J. Buydos, Fiber optics. Washington, D.C.: Science Reference Section, Science and Technology Division, Library of Congress, 1988.
CR  - N. Kapany, Fiber optics. New York: Academic Press, 1967.
CR  - C. Hentschel, Fiber optics handbook. Boeblingen: Hewlett-Packard, Instruments Division, 1989.
CR  - J. Petersen, Fiber optics illustrated dictionary. Boca Raton, Fla.: CRC Press, 2003.
CR  - B. Smith, Careers in fiber optics. New York: Rosen Pub. Group, 1998.
CR  - R. Clark and R. Hester, Advances in non-linear spectroscopy. Chichester: Wiley, 1988.
CR  - K. Linden, Laser diode and LED applications III. Bellingham, Wash.: Society of Photo-optical Instrumentation Engineers, 1997.
UR  - https://doi.org/10.53600/ajesa.863296
L1  - https://dergipark.org.tr/en/download/article-file/1516813
ER  -