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Proceedings Paper

SOA-based functional devices
Author(s): Tina Fjelde; David Wolfson; Allan Kloch; Mads Loenstrup Nielsen; Henrik Wessing
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Paper Abstract

Semiconductor optical amplifier (SOA)-based functional devices are of interest for optical signal processing due3 to their many attractive features, which include high-speed operation, potentially low polarization dependency, large optical bandwidth and low loss. Furthermore, they may be integrateable and have a moderate to low power consumption. The fact that SOA-based devices can be used for a multitude of purposes and either have the above-mentioned characteristics inherently or can be fabricated to accommodate them, makes them prime candidates for the implementation of a variety of functionalities. Among others, SOAs are attractive as fast optical gates, where one of their most significant features is a high on-off ratio, which is critical for cross-talk suppression. Furthermore, SOAs employed as nonlinear elements, either alone or in interferometers, have demonstrated the capability of more complex functionalities such as wavelength conversion, switching, time-division (de)multiplexing as well as 2R and 3R regeneration. Additionally, more exotic functionalities such as Boolean logic gates can be realized, making SOA- based devices attractive for use in a broader system or network perspective. In this paper, the focus will be on techniques for wavelength conversion, 2R and 3R regeneration employing cross-phase modulation in interferometers, which have demonstrated some of the most promising results. Furthermore, the implementation of all-optical logic using SOA-based interferometers will be discussed, and some of the novel employments of these functionalities will be presented.

Paper Details

Date Published: 30 July 2001
PDF: 13 pages
Proc. SPIE 4532, Active and Passive Optical Components for WDM Communication, (30 July 2001); doi: 10.1117/12.436005
Show Author Affiliations
Tina Fjelde, Technical Univ. of Denmark (United States)
David Wolfson, Technical Univ. of Denmark (Denmark)
Allan Kloch, IONAS A/S (Denmark)
Mads Loenstrup Nielsen, Technical Univ. of Denmark (Denmark)
Henrik Wessing, Technical Univ. of Denmark (Denmark)


Published in SPIE Proceedings Vol. 4532:
Active and Passive Optical Components for WDM Communication
Achyut Kumar Dutta; Abdul Ahad Sami Awwal; Niloy K. Dutta; Katsunari Okamoto, Editor(s)

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