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

Measurement of the nonlinear phase shift induced by cascaded interactions in a periodically poled lithium niobate waveguide

Carlo Liberale, Vittorio Degiorgio, Marco Marangoni, G. Galzerano, Roberta Ramponi

Published Sep 15, 2005• 5 citations
Publisher

Abstract

We report on the measurement of nonlinear phase shift phiNL induced by a strong pump at wavelength lamda p on a weak signal at lamda s through a cascade of two second-order interactions in a periodically poled lithium-niobate waveguide. The experiment is performed by use of an interferometric scheme especially designed to be insensitive to slow mechanical and thermal drift effects. The observed behavior of phiNL as a function of pump power and of wavelength difference lamda p - lamda s, is in good agreement with the theoretical predictions.

DOI
10.1364/ol.30.002448

Related papers

Cross-phase modulation due to a cascade of quadratic interactions in a PPLN waveguide

Carlo Liberale, Ilaria Cristiani, Vittorio Degiorgio +3 more

The cross-phase modulation of a weak signal has been obtained in a periodically poled lithium-niobate waveguide as a result of the quadratic interaction of the signal with the second harmonic of an intense pump field. The nonlinear phase acquired by the signal has been measured as a function of the pump field intensity and of the phase mismatch with the second harmonic field. The measurements have been performed with a properly designed experimental setup based on a Mach-Zehnder interferometric scheme, which proved to be quite insensitive to slow mechanical and thermal drifts. Numerical simulations are in good agreement with experimental results.

IEEE Journal of Selected Topics in Quantum Electronics•May 1, 2006•4 citations

Phase-Sensitive Wavelength Conversion Based on Cascaded Quadratic Processes in Periodically Poled Lithium Niobate Waveguides

Sheng Liu, Kwang Jo Lee, Joseph Kakande +5 more

We propose and experimentally demonstrate a novel scheme of phase-sensitive wavelength conversion, based on a combination of cascaded second-order nonlinear effects in two cascaded periodically poled lithium niobate waveguides.

Optical Fiber Communication Conference•Jan 1, 2011•1 citation

Phase-regenerative wavelength conversion in periodically poled lithium niobate waveguides

Sheng Liu, Kwang Jo Lee, Francesca R. Parmigiani +4 more

We propose and experimentally demonstrate phase-regenerative wavelength conversion in periodically poled lithium niobate waveguides, using either: a single-stage implementation based on a simultaneous combination of two cascaded second-order nonlinear effects in a single periodically poled lithium niobate waveguide, or a two-stage implementation where two separate devices are used in sequence to give rise to the same nonlinear effects. The phase regeneration properties of the proposed wavelength conversion schemes are also investigated.

Optics Express•Jun 1, 2011•8 citations

Wavelength shifting and amplification of optical pulses through cascaded second order processes in periodically-poled lithium niobate

Gian Piero Banfi, P.K. Datta, Vittorio Degiorgio +1 more

We report on wavelength-shifting based on cascaded second-order nonlinearities1 in periodically-poled lithium niobate. Wavelength shifting from a signal s at λs=λp+Δ to a frequency-shifted signal f at λf=λp−Δ is obtained under the action of a pump p at λp: the effect is realized through the generation of the second harmonic (sh) of p and subsequent parametric amplification of s driven by sh. In the latter process f is also generated. Exploiting the advantages of quasi-phase-matching, efficient shifting is achieved at pump intensities about two orders of magnitude lower than in traditional second-order materials such as BBO.2

Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)•Jan 1, 1998•1 citation

Phase sensitive amplification based on quadratic cascading in a periodically poled lithium niobate waveguide

Kwang Jo Lee, Francesca R. Parmigiani, Sheng Liu +4 more

We propose and demonstrate phase-sensitive amplification based on cascaded second harmonic generation and difference frequency generation within a periodically poled lithium niobate waveguide. Excellent agreement between our numerical simulations and proof-of-principle experiments using a 3-cm waveguide device operating at wavelengths around 1550 nm is obtained. Our experiments confirm the validity and practicality of the approach and illustrate the broad gain bandwidths achievable. Additional simulation results show that the maximum gain/attenuation factor increases quadratically with input pump power, reaching a value of +/- 19.0 dB at input pump powers of 33 dBm for a 3 cm-long waveguide. Increased gains/reduced powers for a fixed gain could be achieved using longer crystals.

Optics Express•Oct 23, 2009•94 citations

Large Phase Sensitive Gain in Periodically Poled Lithium–Niobate With High Pump Power

Benjamin James Puttnam, Dániel Mazroa, Satoshi Shinada +1 more

We investigate phase-sensitive operation at telecommunication wavelengths in periodically-poled lithium-niobate waveguides, measuring a record phase-dependent dynamic range of 14.5 dB with 5-dB phase-sensitive gain, compared to phase-insensitive operation. We also highlight limitations arising at high pump powers from green light emission and thermal instability which limits performance compared with an ideal theoretical model.

IEEE Photonics Technology Letters•Jan 17, 2011•23 citations
We report on the measurement of nonlinear phase shift phiNL induced by a strong pump at wavelength lamda p on a weak signal at lamda s through a cascade of two second-order interactions in a periodically poled lithium-niobate waveguide. The experiment is performed by use of an interferometric scheme especially designed to be insensitive to slow mechanical and thermal drift effects. The observed behavior of phiNL as a function of pump power and of wavelength difference lamda p - lamda s, is in good agreement with the theoretical predictions.
The cross-phase modulation of a weak signal has been obtained in a periodically poled lithium-niobate waveguide as a result of the quadratic interaction of the signal with the second harmonic of an intense pump field. The nonlinear phase acquired by the signal has been measured as a function of the pump field intensity and of the phase mismatch with the second harmonic field. The measurements have been performed with a properly designed experimental setup based on a Mach-Zehnder interferometric scheme, which proved to be quite insensitive to slow mechanical and thermal drifts. Numerical simulations are in good agreement with experimental results.
We propose and experimentally demonstrate phase-regenerative wavelength conversion in periodically poled lithium niobate waveguides, using either: a single-stage implementation based on a simultaneous combination of two cascaded second-order nonlinear effects in a single periodically poled lithium niobate waveguide, or a two-stage implementation where two separate devices are used in sequence to give rise to the same nonlinear effects. The phase regeneration properties of the proposed wavelength conversion schemes are also investigated.
We report on wavelength-shifting based on cascaded second-order nonlinearities1 in periodically-poled lithium niobate. Wavelength shifting from a signal s at λs=λp+Δ to a frequency-shifted signal f at λf=λp−Δ is obtained under the action of a pump p at λp: the effect is realized through the generation of the second harmonic (sh) of p and subsequent parametric amplification of s driven by sh. In the latter process f is also generated. Exploiting the advantages of quasi-phase-matching, efficient shifting is achieved at pump intensities about two orders of magnitude lower than in traditional second-order materials such as BBO.2
We propose and demonstrate phase-sensitive amplification based on cascaded second harmonic generation and difference frequency generation within a periodically poled lithium niobate waveguide. Excellent agreement between our numerical simulations and proof-of-principle experiments using a 3-cm waveguide device operating at wavelengths around 1550 nm is obtained. Our experiments confirm the validity and practicality of the approach and illustrate the broad gain bandwidths achievable. Additional simulation results show that the maximum gain/attenuation factor increases quadratically with input pump power, reaching a value of +/- 19.0 dB at input pump powers of 33 dBm for a 3 cm-long waveguide. Increased gains/reduced powers for a fixed gain could be achieved using longer crystals.