Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Optics Letters

Intensity-dependent parametric amplification for traveling-wave signal processing

Thomas Symul, Kamel Bencheikh, Juan Ariel Levenson, David Eger, Moshe B. Oron

Published Nov 1, 2000• 0 citations
Publisher

Abstract

We propose and demonstrate a nonlinear parametric amplification system that relies on sequential use of a nonlinear phase shift (Kerr-like effect) and on phase-sensitive parametric amplification. We demonstrate amplification that is 50% better than with a bare phase-sensitive amplifier as well as two additional effects: inversion of weak optical modulation and suppression of classical noise.

DOI
10.1364/ol.25.001585

Related papers

Combined optical nonlinearities for travelling-wave signal processing

Thomas Symul, Kamel Bencheikh, David Eger +2 more

Summary form only given. We propose and demonstrate a travelling-wave nonlinear device for optical signal processing. It is based on the sequential use of a nonlinear phase shift (Kerr-like effect) and a phase sensitive parametric amplification (PSA). Even though it is under first step investigations, this arrangement has already featured interesting optical proprieties, among which: (1) amplification of a weak modulation encoded on a strong optical signal, better than the usual gain of the bare PSA. (2) Sign inversion of the weak modulation with absolute gain greater than unity. (3) Complete suppression of classical noise. For these demonstrations, the processed signal is generated by a pulsed frequency doubled Nd:YLF laser.

Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)•Nov 11, 2002•0 citations

Fiber-based phase-sensitive optical amplifiers and their applications

Peter A. Andrekson, Magnus Karlsson

Optical parametric amplifiers rely on second-order susceptibility (three-wave mixing) or third-order susceptibility (four-wave mixing) in a nonlinear process where the energy of incoming photons is not changed (elastic scattering). In the latter case, two pump photons are converted to a signal and to an idler photon. Under certain conditions, related to the phase evolution of the waves involved, this conversion can be very efficient, resulting in large amplification of an input signal. As the nonlinear process can be very fast, all-optical applications aside from pure amplification are also possible. If the amplifier is implemented in an optical input-phase-sensitive manner, it is possible to amplify a signal wave without excess noise, i.e., with a noise figure of 0 dB. In this paper, we will provide the fundamental concepts and theory of such amplifiers, with a focus on their implementation in highly nonlinear optical fibers relying on four-wave mixing. We will discuss the distinctions between phase-insensitive and phase-sensitive operation and include several experimental results to illustrate their capability. Different applications of parametric amplifiers are also discussed, including their use in optical communication links.

Advances in Optics and Photonics•Feb 20, 2020•102 citations

Cascaded Traveling-Wave Phase-Sensitive Optical Parametric Amplifiers

Gideon Alon, Oo-Kaw Lim, Amar R. Bhagwat +3 more

We demonstrate a two-stage system of cascaded traveling-wave phase-sensitive optical parametric amplifiers, achieving 10 dB second-stage amplification (5 dB deamplification) on top of the amplification (deamplification) provided by the first stage.

Conference on Lasers and Electro-Optics•Jan 1, 2011•2 citations

Amplification of a Squeezed-Quadrature using a Cascaded Traveling-Wave Phase-Sensitive Optical Parametric Amplifier

Gideon Alon, Oo-Kaw Lim, Amar R. Bhagwat +3 more

We demonstrate a two-stage system of cascaded traveling-wave phase-sensitive optical parametric amplifiers, achieving 3.6 dB squeezed-quadrature amplification (0.9 dB deamplification) on top of 1.3 dB squeezing provided by the first stage.

•Jan 1, 2011•0 citations

Amplification of a squeezed-quadrature using a cascaded traveling-wave phase-sensitive optical parametric amplifier

Gideon Alon, Oo-Kaw Lim, Amar R. Bhagwat +3 more

We demonstrate a two-stage system of cascaded traveling-wave phase-sensitive optical parametric amplifiers, achieving 3.6dB squeezed-quadrature amplification (0.9dB deamplification) on top of 1.3 dB squeezing provided by the first stage.

•Aug 1, 2011•1 citation

Quantum fluctuation in traveling-wave amplification of optical images

I. V. Sokolov, Mikhail I. Kolobov, Luigi A. Lugiato

We investigate amplification of optical images by means of a traveling-wave optical parametric amplifier. As shown recently by Kolobov and Lugiato [Phys. Rev. A 52, 4930 (1995)] for a cavity-based geometry, such a scheme can amplify images, without deteriorating their sign-to-noise ratio, thus working as a noiseless amplifier. Here we consider a configuration without cavity, which is more realistic for a possible experimental realization. We investigate in detail the quantum fluctuations of the amplifier and formulate criteria for its noiseless performance. The spatial resolution power, which guarantees noiseless amplification is estimated. We demonstrate how the optimum phase matching of a phase-sensitive wavefront of the image can improve the noise performance of the amplifier and bring it to the ultimate value achievable under given physical conditions. We discuss the effect of improvement of the signal-to-noise ratio in the case of observation of both the input and the amplified image, with an ideal photodetector of small area (i.e., much less than the coherence area of the amplifier). This improvement is due to the fact that the signal-to-noise ratio in the input is deteriorated by the observation with the photodetector of small area.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Feb 25, 1999•1 citation
We propose and demonstrate a nonlinear parametric amplification system that relies on sequential use of a nonlinear phase shift (Kerr-like effect) and on phase-sensitive parametric amplification. We demonstrate amplification that is 50% better than with a bare phase-sensitive amplifier as well as two additional effects: inversion of weak optical modulation and suppression of classical noise.
Summary form only given. We propose and demonstrate a travelling-wave nonlinear device for optical signal processing. It is based on the sequential use of a nonlinear phase shift (Kerr-like effect) and a phase sensitive parametric amplification (PSA). Even though it is under first step investigations, this arrangement has already featured interesting optical proprieties, among which: (1) amplification of a weak modulation encoded on a strong optical signal, better than the usual gain of the bare PSA. (2) Sign inversion of the weak modulation with absolute gain greater than unity. (3) Complete suppression of classical noise. For these demonstrations, the processed signal is generated by a pulsed frequency doubled Nd:YLF laser.
Optical parametric amplifiers rely on second-order susceptibility (three-wave mixing) or third-order susceptibility (four-wave mixing) in a nonlinear process where the energy of incoming photons is not changed (elastic scattering). In the latter case, two pump photons are converted to a signal and to an idler photon. Under certain conditions, related to the phase evolution of the waves involved, this conversion can be very efficient, resulting in large amplification of an input signal. As the nonlinear process can be very fast, all-optical applications aside from pure amplification are also possible. If the amplifier is implemented in an optical input-phase-sensitive manner, it is possible to amplify a signal wave without excess noise, i.e., with a noise figure of 0 dB. In this paper, we will provide the fundamental concepts and theory of such amplifiers, with a focus on their implementation in highly nonlinear optical fibers relying on four-wave mixing. We will discuss the distinctions between phase-insensitive and phase-sensitive operation and include several experimental results to illustrate their capability. Different applications of parametric amplifiers are also discussed, including their use in optical communication links.
We investigate amplification of optical images by means of a traveling-wave optical parametric amplifier. As shown recently by Kolobov and Lugiato [Phys. Rev. A 52, 4930 (1995)] for a cavity-based geometry, such a scheme can amplify images, without deteriorating their sign-to-noise ratio, thus working as a noiseless amplifier. Here we consider a configuration without cavity, which is more realistic for a possible experimental realization. We investigate in detail the quantum fluctuations of the amplifier and formulate criteria for its noiseless performance. The spatial resolution power, which guarantees noiseless amplification is estimated. We demonstrate how the optimum phase matching of a phase-sensitive wavefront of the image can improve the noise performance of the amplifier and bring it to the ultimate value achievable under given physical conditions. We discuss the effect of improvement of the signal-to-noise ratio in the case of observation of both the input and the amplified image, with an ideal photodetector of small area (i.e., much less than the coherence area of the amplifier). This improvement is due to the fact that the signal-to-noise ratio in the input is deteriorated by the observation with the photodetector of small area.