The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 10, 2002
Filed:
Sep. 28, 2001
John Medberry, Windsor, CO (US);
Benno Guggenheimer, Fort Collins, CO (US);
David Washburn, Fort Collins, CO (US);
Agilent Technologies, Inc., Palo Alto, CA (US);
Abstract
A system and method for finding the position of a waveguide in a planar optical device that has application to the coupling of light to a planar optical waveguide without connectors. The system comprises input and output optical fiber probes, a light source, a photo or light detector and a optical power meter. The light detector is positioned at the exit of the optical waveguide of interest. Typically, the position of the waveguide will be known with some window of uncertainty. Assuming that the photo detector is a photodiode, the area of the photodiode is preferably large enough that the exit of the waveguide can be assumed to lie within the detection area of the photodiode. The input optical fiber probe is coupled to the light source and is moved across the uncertainty window of the entry to the waveguide. The light transmitted through the waveguide to the photo detector is measured and used to find the position of the entry to the way guide. The input fiber probe is then positioned at the entry to the waveguide. The output fiber probe is then coupled to the optical power meter and used to scan for the exit for the waveguide.