Patent ID: 6493072
Filing Date: 2002-12-10
Classification: G02B

Abstract:
A system for locating a waveguide within an optical device, the waveguide having an entry and an exit in the optical device, the optical device having a first layer containing the waveguide and a second layer substantially covering the first layer, the system comprising:an input optical fiber probe, with a receiving end and a transmitting end, adapted to receive laser light at the receiving end and to transmit light at the transmitting end; a fiber holder for retaining the input optical fiber probe; a first positioning element coupled to the fiber holder and operable to position the input optical fiber probe at a plurality of locations within a planar region parallel to the first layer containing the waveguide; and a light detector positioned in proximity to the waveguide exit and operable to detect light from the optical device and to generate a plurality of output signals indicative of the amount of light detected for each of the plurality of input optical fiber probe locations; whereby the position of the waveguide entry is determined in accordance with the plurality of output signals.