Laser News, Vol.9, No.4, October 1998 Faster Optical Switching

A new micro-optical switching and beam deflection system to take care of the exceptional load and speed required for optical data transmission has been developed by scientists of Germany-based Fraunhofer Institute for Applied Optics and Precision Engineering in collaboration with Piezosystem Zena Company. The new system can ensure rapid and reliable channeling of information flowing through optical fibres.

The researchers have combined micro-optic and piezo-electric switches that can achieve both precision and functional rapidity. The switches are basically micro-lenses that can be moved mechanically to divert optical beams. Micro-lenses have virtually no optical faults, which ensure exceptional efficiency in data transmission. Piezo-electric technology causes a synthetic ceramic component to expand on applying voltage to offer fast mechanical movement. The unique switching system can also distribute the incident light pulse into appropriate channels within a millisecond. The technique used in this system has further applications in entirely different fields like miniaturized laser scanners for medical use and laser material processing for automotive industry and surveillance systems.


(PTI Science Service, p.13, June 1, 1998)
(Compiled by Sujit Bandyopadhyay, CAT)