Showing papers by "R. Ryf published in 2006"
09 Oct 2006
TL;DR: In this paper, the authors presented arrays of electrostatically actuated 64 times64 piston-tip-tilt micromirrors realized using a surface micromachining 3-structural-layer polysilicon process.
Abstract: We present arrays of electrostatically actuated 64times64 piston-tip-tilt micromirrors realized using a surface micromachining 3-structural-layer polysilicon process. High fill factor, flat mirrors 120 mum in size have mechanical response in the order of 10 mus, with plusmn4 mechanical tip and tilt and 5 mum piston continuous, controllable range under 110 V. The actuator design is based on four dual in-plane comb drives with 0.5 mum critical features size
13 citations
05 Mar 2006
TL;DR: In this paper, a monitoring technique was demonstrated that utilizes polarization orthogonality and heterodyne mixing to measure the in-band optical-signal-to-noise-ratio.
Abstract: A monitoring technique is demonstrated that utilizes polarization orthogonality and heterodyne mixing to measure the in-band optical-signal-to-noise-ratio. This technique is insensitive to PMD and nonlinear polarization scattering, and operates independently of the optical signal properties.
6 citations