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

Tsai J., Huang S., Hah D. , Wu M.

JOURNAL OF LIGHTWAVE TECHNOLOGY, cilt.24, sa.2, ss.897-903, 2006 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 24 Konu: 2
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1109/jlt.2005.861915
  • Sayfa Sayıları: ss.897-903


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-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 (> +/- 5 degrees 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 mu s have been achieved.