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Author Stegeman, G.I. ♦ Ultanir, E. ♦ Michaelis, D. ♦ Lange, C.H. ♦ Lederer, F.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2004
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Semiconductor optical amplifiers ♦ Optical waveguides ♦ Signal processing ♦ Stimulated emission ♦ Optical interferometry ♦ Optical fiber networks ♦ Optical solitons ♦ Communication switching ♦ Demultiplexing ♦ Frequency
Abstract Semiconductor optical amplifiers (SOAs) have proved to be very useful elements for networks and communications systems. As well as amplifying signals, SOAs have been also used for a number of network optical processing functions, such as switching, demultiplexing, frequency shifting etc. Usually the light is guided in SOAs by fixed channel waveguides fabricated by some form of microlithography. As a result, controllable routing functions etc. need to be implemented by electro-optic devices such as Mach-Zehnder interferometers. There is another option for guiding in SOA chips which is more flexible. Spatial solitons, i.e. self-trapped beams which propagate without spreading, have now been observed with many different nonlinearities. These are all essentially lossless systems in which spatial diffraction is compensated by some self-focusing mechanism. However, in an amplifying medium like an SOA, loss must also be balanced by gain, which leads to an inherently different soliton than the lossless ones. In this case, the small signal gain determines completely the soliton properties, i.e., there is no trade-off between the peak intensity and the soliton width as is well-known for solitons in lossless media. We discuss the first observation of these "dissipative" solitons.
Description Author affiliation: Sch. of Opt./CREOL, Central Florida Univ., Orlando, FL, USA (Stegeman, G.I.; Ultanir, E.)
ISBN 0780383435
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2004-07-04
Publisher Place Poland
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 152.55 kB
Page Count 3
Starting Page 1
Ending Page 3

Source: IEEE Xplore Digital Library