1×N2 wavelength-selective switch with two cross-scanning one-axis analog micromirror arrays in a 4-f optical system
Tsai, J.
Sophia Ting-Yu Huang
Hah, D.
Wu, M.C.
Amuse Cosmetics Inc., Tustin, CA, USA;
This paper appears in: Lightwave Technology, Journal of
Publication Date: Feb. 2006
Volume: 24,
Issue: 2
On page(s): 897- 903
ISSN: 0733-8724
INSPEC Accession Number: 8848779
Digital Object Identifier: 10.1109/JLT.2005.861915
Current Version Published: 2006-02-13
Abstract
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 N2, where N is the maximum linear port count limited by optical diffraction. Using surface-micromachined micromirrors with hidden vertical comb drives, large scan angles (>±5° 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 <700 μs have been achieved.
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