Pierre Labeye

A fully integrated micro-opto-mechanical steering device

We present a wholly integrated one dimensional scanner, for telemetry and obstacle detection applications. The deflection is obtained by means of cylindrical microlenses, driven by a set of electrostatic combs. Integrated on silicon substrate, the steering device is etched in silica to widen the operation wavelength range. The chosen design and associated silicon surface micromachining technology enable more than 700 chips to be produced on a 100 mm diameter wafer. Furthermore, we underline the simplicity of the process as the optical axis and mechanical structure move in the substrate plane. This paper describes the structure, manufacturing process flow and experimental results of the developed 1D-scanner.

Microscanning system for laser applications

We have developed an integrated system for laser beam deflection, using a monolithic silica on silicon structure including microlenses and an electromechanical actuator. The scanner shows a maximum deflection angle of +/- 5 degree(s) for a static Voltage of about 130 V or continuous scanning of a field of 20 degree(s) for a 45 V signal at the resonance frequency. The device is fabricated by a surface micromachining process of a silica layer on silicon substrate with no subsequent assembling steps involved.