ALERT: This system is being upgraded on Tuesday December 12. It will not be available
for use for several hours that day while the upgrade is in progress. Deposits to DukeSpace
will be disabled on Monday December 11, so no new items are to be added to the repository
while the upgrade is in progress. Everything should be back to normal by the end of
day, December 12.
Information-theoretic analysis of a stimulated-Brillouin-scattering-based slow-light system.
dc.contributor.author | Lee, M | |
dc.contributor.author | Zhu, Y | |
dc.contributor.author | Gauthier, DJ | |
dc.contributor.author | Gehm, ME | |
dc.contributor.author | Neifeld, MA | |
dc.coverage.spatial | United States | |
dc.date.accessioned | 2012-02-13T16:28:47Z | |
dc.date.issued | 2011-11-10 | |
dc.identifier | http://www.ncbi.nlm.nih.gov/pubmed/22083377 | |
dc.identifier | 224132 | |
dc.identifier.uri | https://hdl.handle.net/10161/5103 | |
dc.description.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 5 GHz. 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 Gaussian-shaped 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 450 mW 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. | |
dc.language | eng | |
dc.language.iso | en_US | |
dc.publisher | The Optical Society | |
dc.relation.ispartof | Appl Opt | |
dc.title | Information-theoretic analysis of a stimulated-Brillouin-scattering-based slow-light system. | |
dc.type | Journal article | |
duke.contributor.id | Gauthier, DJ|0095580 | |
duke.contributor.id | Gehm, ME|0095766 | |
duke.description.issue | 32 | |
duke.description.volume | 50 | |
pubs.author-url | http://www.ncbi.nlm.nih.gov/pubmed/22083377 | |
pubs.begin-page | 6063 | |
pubs.end-page | 6072 | |
pubs.issue | 32 | |
pubs.organisational-group | Duke | |
pubs.organisational-group | Electrical and Computer Engineering | |
pubs.organisational-group | Physics | |
pubs.organisational-group | Pratt School of Engineering | |
pubs.organisational-group | Trinity College of Arts & Sciences | |
pubs.publication-status | Published | |
pubs.volume | 50 | |
dc.identifier.eissn | 1539-4522 | |
duke.contributor.orcid | Gehm, ME|0000-0003-4163-749X |
Files in this item
This item appears in the following Collection(s)
- Scholarly Articles
Articles