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Proceedings Paper

Applications of the arbitrary optical filter: fiber Bragg grating filters for WDM and CDMA communication
Author(s): Anders Grunnet-Jepsen; Pierre St-Hilaire; Alan E. Johnson; John N. Sweetser
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Paper Abstract

The design and manufacture of advanced telecommunication devices based on Fiber Bragg gratings (FBG) is presented. With the maturing of optical communication comes the need for advanced optical filtering capabilities that permit the direct manipulation and processing of optical data streams in both the wavelength and time domains. By creating very complex grating amplitude and phase profiles inside fibers it is possible to approach an arbitrary transfer function capability. We demonstrate that with these filters it is possible, for example, to improve greatly the filtering characteristics vis-a-vis WDM or chromatic dispersion compensation applications. More importantly, more advanced filtering can be achieved in which temporal codes can be imprinted directly inside the optical bits and subsequently recognized by matched optical filtering. This optical code-division multiplexing (CDM) capability presents interesting new opportunities for advanced optical processing allowing for increased channel count, novel optical routing abilities, or more flexible bandwidth distribution. Moreover, the filtering can be made compatible with WDM and TDM systems, and hence takes a large step towards enabling the introduction of more complex modulation formats in optical communication systems. An important consequence of the arbitrary filtering capability is that multiple filtering functionalities can be combined inside a single FBG. In this context, we present a filter that combines wavelength selectivity with code discrimination and dispersion compensation.

Paper Details

Date Published: 30 July 2001
PDF: 12 pages
Proc. SPIE 4532, Active and Passive Optical Components for WDM Communication, (30 July 2001); doi: 10.1117/12.436018
Show Author Affiliations
Anders Grunnet-Jepsen, Templex Technology, Inc. (United States)
Pierre St-Hilaire, Templex Technology, Inc. (United States)
Alan E. Johnson, Templex Technology, Inc. (United States)
John N. Sweetser, Templex Technology, Inc. (United States)

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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