Light controlling light in an optical fibre: From very slow to faster-than-light speed

Authors
Thévenaz, Luc; Song, K.-Y.; Chin, S.H.; González Herráez, MiguelUniversity of Alcalá Author
Identifiers
Permanent link (URI): http://hdl.handle.net/10017/27445
DOI: 10.1109/WISP.2007.4447517
ISBN: 978-14244-0830-6
Publisher
IEEE
Date
2008-02-08
Affiliation
Universidad de Alcalá. Departamento de Electrónica
Bibliographic citation
Thévenaz, L.,Song, K.-Y., Chin, S.-H., González-Herráez, M., 2007 "Light controlling light in an optical fibre: From very slow to faster-than-light speed , IEEE International Symposium on Intelligent Signal Processing 2007, pp. 1-6.
Keywords
Fiber optics
Nonlinear optics
Slow & fast light
Stimulated Brillouin scattering
Project
200021- 109773/1 (Swiss National Foundation)
T1C2003-01869 (Ministerio de Educación y Ciencia)
PI2005/076 (Universidad de Alcalá)
Document type
info:eu-repo/semantics/conferenceObject
Version
info:eu-repo/semantics/acceptedVersion
Publisher's version
http://dx.doi.org/10.1109/WISP.2007.4447517
Access rights
info:eu-repo/semantics/openAccess
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Abstract
We demonstrate a method to achieve an extremely wide and flexible external control of the group velocity of signals as they propagate along an optical fibre. This control is achieved by means of the gain and loss mechanisms of stimulated Brillouin scattering in the fibre itself. Our experiments show that group velocities below 71,000 km/s on one hand, well exceeding the speed of light in vacuum on the other hand and even negative group velocities can readily be obtained with a simple benchtop experimental setup. Advanced schemes can be realized thanks to the extremely flexible possibility to shape the gain spectrum to make it optimized for applications. Ultra wide bandwidth, delaying with flat amplitude response and lower distortion were successfully demonstrated this wa
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