Reconfigurable wavelength add-drop filtering based on a Banyan network topology and ferroelectric liquid crystal fiber-optic switches

    Authors

    N. A. Riza;S. F. Yuan

    Comments

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    Abbreviated Journal Title

    J. Lightwave Technol.

    Keywords

    electrooptic switches; liquid crystal devices; optical fiber; communications; optical fiber switches; optical interconnections; PHASED-ARRAY ANTENNA; WAVE-GUIDE GRATINGS; IMPLEMENTATION; SPEED; MULTIPLEXER; CROSSTALK; Engineering, Electrical & Electronic; Optics; Telecommunications

    Abstract

    This paper presents a modular optical implementation of a Banyan network by using the physical flexibility of the optical fiber to form the interconnections between compact switching stages based on bulk polarization optics. Specifically, these switching stages use total internal reflection (TIR) prisms with ferroelectric liquid crystal (FLC) polarization rotators to form compact modules. Using this Banyan network implementation, a reconfigurable multiwavelength add-drop filter for wavelength division multiplexed (WDM) applications is proposed, Experimental results for our fiber connected 2 in-2 out FLC-based bulk-optic switching stage gives a similar to 6.7 dB optical insertion loss and a similar to -40 dB optical interchannel crosstalk level. A low 2 dB optical insertion loss design number is expected with optimized components, realizing high (e.g., 35 mu s) switching speed and low crosstalk switching networks.

    Journal Title

    Journal of Lightwave Technology

    Volume

    17

    Issue/Number

    9

    Publication Date

    1-1-1999

    Document Type

    Article

    Language

    English

    First Page

    1575

    Last Page

    1584

    WOS Identifier

    WOS:000082450200007

    ISSN

    0733-8724

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