1/spl times/N/sup 2/ wavelength-selective switch with two cross-scanning one-axis analog micromirror arrays in a 4-f optical system

A new high-port-count wavelength-selective switch (WSS) has been realized using two cross-scanning one-axis analog micromirror arrays in a 4-f optical system. The number of output ports is increased from N to N/sup 2/, where N is the maximum linear port count limited by optical diffraction. Using su...

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Bibliographic Details
Published in:Journal of lightwave technology 2006-02, Vol.24 (2), p.897-903
Main Authors: Tsai, J., Sophia Ting-Yu Huang, Hah, D., Wu, M.C.
Format: Article
Language:English
Subjects:
Insertion loss
Low voltage
Microelectromechanical devices
Micromirrors
Mirrors
Optical arrays
Optical collimators
optical components
Optical diffraction
optical fiber switches
Optical surface waves
Optical switches
Two dimensional displays
wavelength division multiplexing
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Summary:A new high-port-count wavelength-selective switch (WSS) has been realized using two cross-scanning one-axis analog micromirror arrays in a 4-f optical system. The number of output ports is increased from N to N/sup 2/, where N is the maximum linear port count limited by optical diffraction. Using surface-micromachined micromirrors with hidden vertical comb drives, large scan angles (>/spl plusmn/5/spl deg/ mechanical), low drive voltages (7 V), and high fill factors (> 96.25%) are achieved for both scanning mirrors. Experimental results for WSS are demonstrated using both two-dimensional (2-D) array of discrete collimators and monolithic 2-D collimator array. A fiber-to-fiber insertion loss ranging from 6 to 18 dB and a switching time of
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2005.861915