Abstract
<p> <a href="http://oe.osa.org/virtual_issue.cfm?vid=36">Focus Serial: Frontiers of Nonlinear Optics</a> </p>Chalcogenide glasses offer large ultrafast third-order nonlinearities, low two-photon absorption and the absence of free carrier absorption in a photosensitive medium. This unique combination of properties is nearly ideal for all-optical signal processing devices. In this paper we review the key properties of these materials, outline progress in the field and focus on several recent highlights: high quality gratings, signal regeneration, pulse compression and wavelength conversion.
Highlights
Chalcogenide glasses are truly remarkable materials and have been of enormous interest for infrared optics since the 1950’s [1]
In this paper we review the key properties of these materials, outline progress in the field and focus on several recent highlights: high quality gratings, signal regeneration, pulse compression and wavelength conversion
We have demonstrated nonphotosensitive long period gratings based on As2Se3 fiber using the micro-bend [47] and acousto-optic [48] techniques
Summary
Chalcogenide glasses are truly remarkable materials and have been of enormous interest for infrared optics since the 1950’s [1]. For telecommunications based applications, these glasses stand out because they exhibit third-order optical nonlinearities (Kerr, Raman and Brillouin) between two to three orders of magnitude greater than silica This property has gained increasing recognition and has lead to a number of recent demonstrations of all-optical processes including switching [4], regeneration [5,6,7], wavelength conversion [8, 9], amplification [10], lasing [11], pulse compression [12], and slow light [13]. The following section reviews chalcogenide glass photosensitivity and applications for grating based waveguide function. The following section reviews three chalcogenide glass device functions developed in our laboratory: signal regeneration, pulse compression and wavelength conversion. The final section briefly looks as how further device improvements can be achieved as well as other areas where chalcogenide glass based devices might have impact
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