Title :
1×N2 wavelength-selective switch with two cross-scanning one-axis analog micromirror arrays in a 4-f optical system
Author :
Tsai, Jui-che ; Huang, Sophia Ting-Yu ; Hah, Dooyoung ; Wu, Ming C.
Author_Institution :
Amuse Cosmetics Inc., Tustin, CA, USA
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.
Keywords :
micromachining; micromechanical devices; micromirrors; optical arrays; optical collimators; optical communication equipment; optical losses; optical switches; 4-f optical system; discrete collimator; fiber-to-fiber insertion loss; fill factors; linear port count; micromirror arrays; monolithic 2-D collimator array; surface micromachining; vertical comb drives; wavelength-selective switch; Insertion loss; Low voltage; Micromirrors; Mirrors; Optical arrays; Optical collimators; Optical diffraction; Optical surface waves; Optical switches; Two dimensional displays; Microelectromechanical devices; optical components; optical fiber switches; wavelength division multiplexing;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2005.861915
