We present an analytic evaluation of the optical performance of a tip/tilt and piston Spatial Light Modulator, for use in adaptive optic and beam steering applications. The impact of array fill factor, pixel curvature, position and tilt accuracy, and pixel yield are discussed in detail. Two arrangements for beam steering are presented and analyzed; in the first the SLM is used as a programmable higher-order diffraction grating, and in the second the SLM acts as a programmable Fresnel lens inside a telescope.
We demonstrate a MEMS-based 1x2 optical waveguide switch fabricated entirely within silicon-on insulator (SOI). The switch is formed by a suspended cantilever structure consisting of a single mode ridge waveguide in silicon; lateral electrostatic actuation by an adjacent electrode enables switching. Actuation voltages as low as 40 Volts are achieved, with switching speeds on the order of 130 μsec. We demonstrate extinction between ports of more than 31 dB. These switches can be easily integrated with conventional SOI-based waveguide devices to enable a low-power consumption, scalable device platform for telecommunications applications.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.