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

International Conference on Photonics in Switching

Optical parametric amplification for slow light in random birefringence fibers

E. Bettini, Andrea Galtarossa, Luca Palmieri, Marco Santagiustina, Luca Schenato, Carlo Giacomo Someda

Published Aug 1, 2007• 3 citations
Publisher

Abstract

The effects of random birefringence on slow light parametric amplification are numerically studied. Different polarization rotation for signal, idler and pump limits walk-off induced distortions but also reduces gain and induced time delay.
DOI
10.1109/ps.2007.4300737

Related papers

Fundamental and Random Birefringence Limitations to Delay in Slow Light Fiber Parametric Amplification

Luca Schenato, Marco Santagiustina, Carlo Giacomo Someda

Narrowband fiber parametric amplification is known to provide slow and fast light capabilities. Here, an analytical expression of the maximum slow light time delay achievable in ideal, isotropic fibers is derived. Then, the effects of random birefringence on the slow and fast light ability are numerically investigated by integrating the governing equations over a large number of statistical realizations of the fiber. The different polarization rotation along the fiber for the signal, the idler, and the pump reduces the amplifier mean gain and the mean time delay. For small random birefringence, the decrease of the mean delay can be directly imputed to the reduction of the mean gain. For large random birefringence, severe pulse distortion occurs, the mean delay is further reduced and the delay uncertainty highly enhanced. The influence of the stimulated Raman scattering is finally addressed.

Journal of Lightwave Technology•Dec 1, 2008•12 citations

Narrow Band Optical Parametric Amplification for Slow Light in Randomly Birefringent Fibers

Luca Schenato, Marco Santagiustina, Carlo Giacomo Someda

The effects of random birefringence in narrowband parametric amplification for slow light has been numerically investigated showing that the reduction of the mean gain directly causes the reduction of the mean delay for small birefringence.

Optical Fiber Communication Conference•Feb 1, 2008•2 citations

Tunable optical delay using parametric amplification in highly birefringent optical fibers

Nour Nasser, Gil Fanjoux, Éric Lantz +1 more

We theoretically study parametric amplification in highly birefringent optical fibers and show that large tunable optical delay or advancement can be achieved via slow and fast light propagation. We provide a clear derivation of the formula for the optical delay that originates from the imaginary part of the parametric gain. We also perform numerical simulations in both normal and anomalous dispersion regimes. In the latter case, results show that large nanosecond optical delay could, in principle, be obtained at 1550 nm in a 1-km-long polarization-maintaining fiber. We further demonstrate that the optical delay and advancement rely on a group-velocity locking between the two cross-polarized signal and idler pulses.

Journal of the Optical Society of America B•Sep 2, 2011•5 citations

Slow and Fast Light in High-Birefringence Fiber Parametric Amplifiers

Marco Santagiustina

Slow and fast light effects in high-birefringence fibers are theoretically predicted. Delay can be controlled through the pump polarization.

Advanced Photonics•Jan 1, 2011•0 citations

Polarization attributes of stimulated Brillouin scattering slow light in fiber

Avi Zadok, Avishay Eyal, Moshe Tur +1 more

The polarization-related properties of stimulated Brillouin scattering (SBS) processes in long, randomly birefringent, standard optical fibers are examined. Evolution equations for the pump and signal waves, in the presence of both birefringence and SBS, are provided in Jones and Stokes spaces. It is shown that in the undepleted pump regime, the amplification of the SBS signal wave is equivalent to that of a linear medium with polarization-dependent gain. The process is associated with a pair of orthogonal states of polarizations (SOPs) of the signal wave, which undergo maximum and minimum amplification. In long, standard fibers, the Jones vector of the probe SOP which corresponds to maximum amplification is aligned with the complex conjugate of the pump wave Jones vector. The maximum and minimum SBS gain coefficients in such fibers equal two-thirds and one-third of the gain coefficient that is predicted by scalar theory, respectively. The large differential gain of the SBS process gives rise to an effective pulling of the amplified Stokes probe wave SOP, towards that of maximum amplification. Lastly, Stokes wave pulses that are aligned for maximum and minimum amplification experience different group delays, which manifest as polarization-related distortions in SBS slow light setups.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Feb 10, 2011•4 citations

Large Delay and Low Distortion of a 40 Gb/s Signal Propagating in a Slow Light System Based on Parametric Amplification in Optical Fibers

Evgeny Shumakher, R. Blit, A. Willinger +2 more

We determine the distribution of fiber dispersion parameters with extremely high resolutions and use the results to accurately predict large delays and low distortions of 40-Gb/s signals propagating in fiber parametric amplification slow light systems.

European Conference on Optical Communication•Sep 1, 2006•5 citations
Narrowband fiber parametric amplification is known to provide slow and fast light capabilities. Here, an analytical expression of the maximum slow light time delay achievable in ideal, isotropic fibers is derived. Then, the effects of random birefringence on the slow and fast light ability are numerically investigated by integrating the governing equations over a large number of statistical realizations of the fiber. The different polarization rotation along the fiber for the signal, the idler, and the pump reduces the amplifier mean gain and the mean time delay. For small random birefringence, the decrease of the mean delay can be directly imputed to the reduction of the mean gain. For large random birefringence, severe pulse distortion occurs, the mean delay is further reduced and the delay uncertainty highly enhanced. The influence of the stimulated Raman scattering is finally addressed.
We theoretically study parametric amplification in highly birefringent optical fibers and show that large tunable optical delay or advancement can be achieved via slow and fast light propagation. We provide a clear derivation of the formula for the optical delay that originates from the imaginary part of the parametric gain. We also perform numerical simulations in both normal and anomalous dispersion regimes. In the latter case, results show that large nanosecond optical delay could, in principle, be obtained at 1550 nm in a 1-km-long polarization-maintaining fiber. We further demonstrate that the optical delay and advancement rely on a group-velocity locking between the two cross-polarized signal and idler pulses.
The polarization-related properties of stimulated Brillouin scattering (SBS) processes in long, randomly birefringent, standard optical fibers are examined. Evolution equations for the pump and signal waves, in the presence of both birefringence and SBS, are provided in Jones and Stokes spaces. It is shown that in the undepleted pump regime, the amplification of the SBS signal wave is equivalent to that of a linear medium with polarization-dependent gain. The process is associated with a pair of orthogonal states of polarizations (SOPs) of the signal wave, which undergo maximum and minimum amplification. In long, standard fibers, the Jones vector of the probe SOP which corresponds to maximum amplification is aligned with the complex conjugate of the pump wave Jones vector. The maximum and minimum SBS gain coefficients in such fibers equal two-thirds and one-third of the gain coefficient that is predicted by scalar theory, respectively. The large differential gain of the SBS process gives rise to an effective pulling of the amplified Stokes probe wave SOP, towards that of maximum amplification. Lastly, Stokes wave pulses that are aligned for maximum and minimum amplification experience different group delays, which manifest as polarization-related distortions in SBS slow light setups.