Patent ID: 6788842
Filing Date: 2004-09-07
Classification: G02B

Abstract:
A diagnostic device for detecting the alignment of movable reflectors in an optical switch, where the optical switch includes an array of optical input fibers, an array of output optical fibers, and at least one reflector array having a plurality of movable mirrors where each mirror can occupy a plurality of positions, the movable mirrors configured to steer input light beams received from the array of input optical fibers along a signal path so that each input light beam can be switched to one of a plurality of output optical fibers as an output beam, the device comprising:a two-dimensional photoimager positioned to receive light from the reflector array to create a two-dimensional image of the reflector array and wherein each movable mirror of the reflector array reflects light to a different two-dimensional position on the photoimager depending on the current position of each movable mirror; and a controller that is able to adjust the movable mirrors of the reflector array according to light received at the photoimager.