Southwest Research Institute

Jds Uniphase Corporation

Robert J Beeson

Joseph N Mitchell

Ernest August Franke

Michael J Magee

Michael Patrick Rigney

Embodiments of the invention provide a non-contact method for measuring the surface profile of an object that can include generating a point-type optical signal and projecting it on a rotatable precision optical grating, generating a rotating pattern of light and dark lines onto the object, recording a series of images of the rotating pattern moving across the object with an image receiving device and calculating the surface profile of the object. Other embodiments can include a method to calibrate the system and a non-contact apparatus that generally includes a point-type light source, a rotatably mounted optical grating being configured to project a moving grating image on the object, a processor in communication with the image capturing device and configured to receive image input from the image capturing device and generate a surface profile representation of the object therefrom.

Non-contact apparatus and method for measuring surface profile

A photonic crystal amplifier that employs a photonic crystal gain medium for a telecommunications system. Pump light is coupled into the amplifier at one end of the gain medium and signal light is coupled into and out of the amplifier at an opposite end of the gain medium. The pump light input end includes a wavelength reflector that reflects the signal wavelengths of light, but transmits the pump wavelengths of light. The signal light input/output end includes a pump wavelength reflector that reflects the pump wavelengths back into the gain medium, but is transparent to the signal wavelengths. The diameter of the gain medium is relatively large, but only allows a single mode to propagate at the pump and signal wavelengths.

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Catonsville, MD, United States of America

Robert J Beeson