TY - JOUR

T1 - Soliton content in the standard optical OFDM signal

AU - Sedov, Egor V.

AU - Redyuk, Alexey A.

AU - Fedoruk, Mikhail P.

AU - Gelash, Andrey A.

AU - Frumin, Leonid L.

AU - Turitsyn, Sergey K.

N1 - Publisher Copyright: © 2018 Optical Society of America.

PY - 2018/12/15

Y1 - 2018/12/15

N2 - The nonlinear Schrödinger equation (NLSE) is often used as a master path-average model for fiber-optic transmission lines. In general, the NLSE describes the co-existence of dispersive waves and soliton pulses. The propagation of a signal in such a nonlinear channel is conceptually different from linear systems. We demonstrate here that the conventional orthogonal frequency-division multiplexing (OFDM) input optical signal at powers typical for modern communication systems might have soliton components statistically created by the random process corresponding to the information content. Applying the Zakharov–Shabat spectral problem to a single OFDM symbol with multiple subcarriers, we quantify the effect of the statistical soliton occurrence in such an information-bearing optical signal. Moreover, we observe that at signal powers optimal for transmission, an OFDM symbol incorporates multiple solitons with high probability. The considered optical communication example is relevant to a more general physical problem of the generation of coherent structures from noise.

AB - The nonlinear Schrödinger equation (NLSE) is often used as a master path-average model for fiber-optic transmission lines. In general, the NLSE describes the co-existence of dispersive waves and soliton pulses. The propagation of a signal in such a nonlinear channel is conceptually different from linear systems. We demonstrate here that the conventional orthogonal frequency-division multiplexing (OFDM) input optical signal at powers typical for modern communication systems might have soliton components statistically created by the random process corresponding to the information content. Applying the Zakharov–Shabat spectral problem to a single OFDM symbol with multiple subcarriers, we quantify the effect of the statistical soliton occurrence in such an information-bearing optical signal. Moreover, we observe that at signal powers optimal for transmission, an OFDM symbol incorporates multiple solitons with high probability. The considered optical communication example is relevant to a more general physical problem of the generation of coherent structures from noise.

KW - TRANSFORM

KW - COMPUTATION

KW - TURBULENCE

KW - WAVES

UR - http://www.scopus.com/inward/record.url?scp=85058748600&partnerID=8YFLogxK

U2 - 10.1364/OL.43.005985

DO - 10.1364/OL.43.005985

M3 - Article

C2 - 30547986

AN - SCOPUS:85058748600

VL - 43

SP - 5985

EP - 5988

JO - Optics Letters

JF - Optics Letters

SN - 0146-9592

IS - 24

ER -