Information-theoretic analysis of a stimulated-Brillouin-scattering-based slow-light system

Myungjun Lee, Yunhui Zhu, Daniel J. Gauthier, Michael E. Gehm, Mark A Neifeld

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We use an information-theoretic method developed by Neifeld and Lee [J. Opt. Soc. Am. A 25, C31 (2008)] to analyze the performance of a slow-light system. Slow-light is realized in this system via stimulated Brillouin scattering in a 2 km-long, room-temperature, highly nonlinear fiber pumped by a laser whose spectrum is tailored and broadened to 5GHz. We compute the information throughput (IT), which quantifies the fraction of information transferred from the source to the receiver and the information delay (ID), which quantifies the delay of a data stream at which the information transfer is largest, for a range of experimental parameters.We also measure the eye-opening (EO) and signal-to-noise ratio (SNR) of the transmitted data stream and find that they scale in a similar fashion to the information-theoretic method. Our experimental findings are compared to a model of the slow-light system that accounts for all pertinent noise sources in the system as well as data-pulse distortion due to the filtering effect of the SBS process. The agreement between our observations and the predictions of our model is very good. Furthermore, we compare measurements of the IT for an optimal flattop gain profile and for a Gaussianshaped gain profile. For a given pump-beam power, we find that the optimal profile gives a 36% larger ID and somewhat higher IT compared to the Gaussian profile. Specifically, the optimal (Gaussian) profile produces a fractional slow-light ID of 0.94 (0.69) and an IT of 0.86 (0.86) at a pump-beam power of 450mW and a data rate of 2:5 Gbps. Thus, the optimal profile better utilizes the available pump-beam power, which is often a valuable resource in a system design.

Original languageEnglish (US)
Pages (from-to)6063-6072
Number of pages10
JournalApplied Optics
Volume50
Issue number32
DOIs
StatePublished - Nov 10 2011

Fingerprint

information analysis
Slow light
Stimulated Brillouin scattering
Information analysis
Throughput
Pumps
scattering
profiles
Information use
Signal to noise ratio
pumps
Systems analysis
Fibers
Lasers
information transfer
systems engineering
resources
signal to noise ratios
Temperature
receivers

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Information-theoretic analysis of a stimulated-Brillouin-scattering-based slow-light system. / Lee, Myungjun; Zhu, Yunhui; Gauthier, Daniel J.; Gehm, Michael E.; Neifeld, Mark A.

In: Applied Optics, Vol. 50, No. 32, 10.11.2011, p. 6063-6072.

Research output: Contribution to journalArticle

Lee, Myungjun ; Zhu, Yunhui ; Gauthier, Daniel J. ; Gehm, Michael E. ; Neifeld, Mark A. / Information-theoretic analysis of a stimulated-Brillouin-scattering-based slow-light system. In: Applied Optics. 2011 ; Vol. 50, No. 32. pp. 6063-6072.
@article{26055be46d5f4e6dbd367a83e06ff52c,
title = "Information-theoretic analysis of a stimulated-Brillouin-scattering-based slow-light system",
abstract = "We use an information-theoretic method developed by Neifeld and Lee [J. Opt. Soc. Am. A 25, C31 (2008)] to analyze the performance of a slow-light system. Slow-light is realized in this system via stimulated Brillouin scattering in a 2 km-long, room-temperature, highly nonlinear fiber pumped by a laser whose spectrum is tailored and broadened to 5GHz. We compute the information throughput (IT), which quantifies the fraction of information transferred from the source to the receiver and the information delay (ID), which quantifies the delay of a data stream at which the information transfer is largest, for a range of experimental parameters.We also measure the eye-opening (EO) and signal-to-noise ratio (SNR) of the transmitted data stream and find that they scale in a similar fashion to the information-theoretic method. Our experimental findings are compared to a model of the slow-light system that accounts for all pertinent noise sources in the system as well as data-pulse distortion due to the filtering effect of the SBS process. The agreement between our observations and the predictions of our model is very good. Furthermore, we compare measurements of the IT for an optimal flattop gain profile and for a Gaussianshaped gain profile. For a given pump-beam power, we find that the optimal profile gives a 36{\%} larger ID and somewhat higher IT compared to the Gaussian profile. Specifically, the optimal (Gaussian) profile produces a fractional slow-light ID of 0.94 (0.69) and an IT of 0.86 (0.86) at a pump-beam power of 450mW and a data rate of 2:5 Gbps. Thus, the optimal profile better utilizes the available pump-beam power, which is often a valuable resource in a system design.",
author = "Myungjun Lee and Yunhui Zhu and Gauthier, {Daniel J.} and Gehm, {Michael E.} and Neifeld, {Mark A}",
year = "2011",
month = "11",
day = "10",
doi = "10.1364/AO.50.006063",
language = "English (US)",
volume = "50",
pages = "6063--6072",
journal = "Applied Optics",
issn = "1559-128X",
publisher = "The Optical Society",
number = "32",

}

TY - JOUR

T1 - Information-theoretic analysis of a stimulated-Brillouin-scattering-based slow-light system

AU - Lee, Myungjun

AU - Zhu, Yunhui

AU - Gauthier, Daniel J.

AU - Gehm, Michael E.

AU - Neifeld, Mark A

PY - 2011/11/10

Y1 - 2011/11/10

N2 - We use an information-theoretic method developed by Neifeld and Lee [J. Opt. Soc. Am. A 25, C31 (2008)] to analyze the performance of a slow-light system. Slow-light is realized in this system via stimulated Brillouin scattering in a 2 km-long, room-temperature, highly nonlinear fiber pumped by a laser whose spectrum is tailored and broadened to 5GHz. We compute the information throughput (IT), which quantifies the fraction of information transferred from the source to the receiver and the information delay (ID), which quantifies the delay of a data stream at which the information transfer is largest, for a range of experimental parameters.We also measure the eye-opening (EO) and signal-to-noise ratio (SNR) of the transmitted data stream and find that they scale in a similar fashion to the information-theoretic method. Our experimental findings are compared to a model of the slow-light system that accounts for all pertinent noise sources in the system as well as data-pulse distortion due to the filtering effect of the SBS process. The agreement between our observations and the predictions of our model is very good. Furthermore, we compare measurements of the IT for an optimal flattop gain profile and for a Gaussianshaped gain profile. For a given pump-beam power, we find that the optimal profile gives a 36% larger ID and somewhat higher IT compared to the Gaussian profile. Specifically, the optimal (Gaussian) profile produces a fractional slow-light ID of 0.94 (0.69) and an IT of 0.86 (0.86) at a pump-beam power of 450mW and a data rate of 2:5 Gbps. Thus, the optimal profile better utilizes the available pump-beam power, which is often a valuable resource in a system design.

AB - We use an information-theoretic method developed by Neifeld and Lee [J. Opt. Soc. Am. A 25, C31 (2008)] to analyze the performance of a slow-light system. Slow-light is realized in this system via stimulated Brillouin scattering in a 2 km-long, room-temperature, highly nonlinear fiber pumped by a laser whose spectrum is tailored and broadened to 5GHz. We compute the information throughput (IT), which quantifies the fraction of information transferred from the source to the receiver and the information delay (ID), which quantifies the delay of a data stream at which the information transfer is largest, for a range of experimental parameters.We also measure the eye-opening (EO) and signal-to-noise ratio (SNR) of the transmitted data stream and find that they scale in a similar fashion to the information-theoretic method. Our experimental findings are compared to a model of the slow-light system that accounts for all pertinent noise sources in the system as well as data-pulse distortion due to the filtering effect of the SBS process. The agreement between our observations and the predictions of our model is very good. Furthermore, we compare measurements of the IT for an optimal flattop gain profile and for a Gaussianshaped gain profile. For a given pump-beam power, we find that the optimal profile gives a 36% larger ID and somewhat higher IT compared to the Gaussian profile. Specifically, the optimal (Gaussian) profile produces a fractional slow-light ID of 0.94 (0.69) and an IT of 0.86 (0.86) at a pump-beam power of 450mW and a data rate of 2:5 Gbps. Thus, the optimal profile better utilizes the available pump-beam power, which is often a valuable resource in a system design.

UR - http://www.scopus.com/inward/record.url?scp=81055155586&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=81055155586&partnerID=8YFLogxK

U2 - 10.1364/AO.50.006063

DO - 10.1364/AO.50.006063

M3 - Article

C2 - 22083377

AN - SCOPUS:81055155586

VL - 50

SP - 6063

EP - 6072

JO - Applied Optics

JF - Applied Optics

SN - 1559-128X

IS - 32

ER -