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Formation of quantum fields in nonlinear media with self-action, amplification, and losses

А. В. Белинский

Optics and SpectroscopyApr 1, 19910 citations

Raman solitons and self-phase modulation

R. Wolfson, Kai J. Drühl

Homogeneous broadening leads to the decay of Raman solitons,1,2 if pump and Stokes are not exactly on Raman resonance. This is due to a dispersive frequency shift at the soliton center. Media with strong self-phase modulation (SPM) can balance this dispersive effect and even show an amplification of peak pump intensity. In this case, the net decrease in pump power is compensated by narrowing from SPM. We present analytical and numerical results, which demonstrate this effect for media with strong Stark shift.Homogeneous broadening leads to the decay of Raman solitons,1,2 if pump and Stokes are not exactly on Raman resonance. This is due to a dispersive frequency shift at the soliton center. Media with strong self-phase modulation (SPM) can balance this dispersive effect and even show an amplification of peak pump intensity. In this case, the net decrease in pump power is compensated by narrowing from SPM. We present analytical and numerical results, which demonstrate this effect for media with strong Stark shift.

Annual Meeting Optical Society of AmericaJan 1, 19880 citations

Nonlinear interaction of pulsed and noise signals in nondispersive media

С. Н. Гурбатов, Igor Yu. Demin, Прончатов-Рубцов Николай Васильевич

Journal of Experimental and Theoretical PhysicsOct 1, 19860 citations

Compensation method for cancellation of excess noise in quantum nondemolition measurements of optical solitons

Victor V. Kozlov, Andrey B. Matsko, Victor Smirnov

Cancellation of excess noise of quantum optical solitons is based on successive passage of a soliton through an optical fiber with positive nonlinearity and negative dispersion and then through a near-resonant two-level systems with negative nonlinearity and positive dispersion. An evolution of a quantum fluctuation in one medium will be reversed in the other. In such a way, the unwanted excess noise due to self- phase modulation in optical fibers can be fully suppressed leading to a radical improvement of accuracy of quantum nondemolition measurements of optical solitons. A detailed discussion of the compensation method with thorough numerical estimations for existing resonant media is provided.Cancellation of excess noise of quantum optical solitons is based on successive passage of a soliton through an optical fiber with positive nonlinearity and negative dispersion and then through a near-resonant two-level systems with negative nonlinearity and positive dispersion. An evolution of a quantum fluctuation in one medium will be reversed in the other. In such a way, the unwanted excess noise due to self- phase modulation in optical fibers can be fully suppressed leading to a radical improvement of accuracy of quantum nondemolition measurements of optical solitons. A detailed discussion of the compensation method with thorough numerical estimations for existing resonant media is provided.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIEMar 9, 20010 citations

Self-Pulsing in Laser Amplification of Broadband Noise

Marvin M. Miller, A. Szöke

Springer eBooksJan 1, 19731 citation

Long-term storage of a soliton bit stream using phase-sensitive amplification

Antonio Mecozzi, William L. Kath, Prem Kumar +1 more

Recently we have shown that stable soliton-like pulse propagation over ultra-long distances is possible in a nonlinear fiber line in which linear loss is balanced by periodic phase-sensitive (parametric) amplification.1 In such a line the length scale over which pulse evolution occurs is significantly increased beyond a soliton period because of the attenuation of phase variations across the pulse’s profile by the amplifiers. Here we examine the effects of quantum noise in the context of a storage ring for a bit stream of soliton-like pulses. We show that the one’s (soliton pulses) are asymptotically stable and the noise on the zero’s of the bit stream (absence of a soliton) is bounded. Moreover, we present evidence that the soliton-soliton interaction and Raman self-frequency shift are efficiently suppressed by the phase-sensitive amplifiers (PSA’s). The effects of direct timing noise and cubic dispersion in the fiber could also be decreased by using a pulsed pump (gain modulation) for the PSA’s.Recently we have shown that stable soliton-like pulse propagation over ultra-long distances is possible in a nonlinear fiber line in which linear loss is balanced by periodic phase-sensitive (parametric) amplification.1 In such a line the length scale over which pulse evolution occurs is significantly increased beyond a soliton period because of the attenuation of phase variations across the pulse’s profile by the amplifiers. Here we examine the effects of quantum noise in the context of a storage ring for a bit stream of soliton-like pulses. We show that the one’s (soliton pulses) are asymptotically stable and the noise on the zero’s of the bit stream (absence of a soliton) is bounded. Moreover, we present evidence that the soliton-soliton interaction and Raman self-frequency shift are efficiently suppressed by the phase-sensitive amplifiers (PSA’s). The effects of direct timing noise and cubic dispersion in the fiber could also be decreased by using a pulsed pump (gain modulation) for the PSA’s.

Nonlinear Guided Waves and Their ApplicationsJan 1, 19950 citations

Noise amplification in dispersive nonlinear media through self-phase modulation

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