Abstract: An electrically actuated micro-mirror system is disclosed. The system has at least three supporting springs attached to a micro-mirror providing at least two rotational degrees of freedom thereof. At least two optional enhancement springs are fanned out from an associated supporting spring to secure the micro-mirror, and the micro-mirror is electro-statically actuated to rotate while the supporting springs and the enhancement springs operate primarily in a tensile mode.

Abstract: Method and system for selectively adding and dropping selected wavelength components &lgr;=&lgr;k1 and &lgr;=&lgr;k2 (1≦k1≦k2≦K) in a light signal having a sequence of wavelengths &lgr;k (k=1, 2, . . . , K), using a dual fiber collimator at each end of an OADM device that contains an optical filter that transmits a selected wavelength &lgr;k1 and reflects the other wavelengths &lgr;k. Connecting two optical communication terminals in a network allows addition and dropping of a selected wavelength. Estimated total optical insertion losses, between the common port and the express port, for 2×2 and 3×3 add/drop combinations are 0.4 dB and 0.8 dB, respectively.