Tellium, Inc.

Lih Lin

David Reese Peale

Nicolas H Bonadeo

Jerry I Dadap, Jr

Walter Framski

A temperature control system is provided for an optical switch including steerable micro-mirrors. The system includes at least one sensor and associated sensing circuitry for measuring the temperature of a micro-mirror or a region of a substrate near a micro-mirror. The system also includes a controller that responds to a signal provided by the sensing circuitry. The controller response may include activating heating or cooling devices the region that is sensed to adjust the temperature of the region.

Temperature control of micro-mirrors of an optical switch substrate

An optical switch having a fiber/lens array and a switching substrate may be properly aligned using one or more grating(s) provided on the switching substrate. The grating(s) may be designed to have a predetermined response when the fiber/lens array and switching substrate are properly aligned. For example, the grating(s) may reflect incident light back into an input fiber, where the back-reflected light may be detected. Accordingly, the position of the switching substrate and/or fiber/lens array may be adjusted until back reflected light having predetermined power is detected.

Optical switch and method for aligning optical switch components

An integrated device includes a micro-lens and an opto-electronic device can be formed on a single substrate. The opto-electronic device may be one or more photodetectors and the micro-lens may be shaped to allow partial absorption of light incident to the micro-lens by the photodetectors. The integrated device is capable of simultaneously performing position detection, signal monitoring, and focusing/collimation.

Monolithic integration of signal-monitoring scheme in an optical switch

An optical device includes a compact and low cost integration of a movable micro-mirror and control mechanisms. The optical devices may be manufactured using microelectromechanical system (MEMS) technology. The optical device may be used in a high port count optical switch, such as an optical cross connect for use in an optical telecommunication system, that uses beam steering to couple light from input fibers to selected output fibers.

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Little Silver, NJ, United States of America

Lih Lin