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:
Nov. 23, 2004
Filed:
Sep. 04, 2002
William T. Devine, Ulster Park, NY (US);
Jeffrey A. Kash, Pleasantville, NY (US);
John U. Knickerbocker, Wappingers Falls, NY (US);
Steven P. Ostrander, Wappingers Falls, NY (US);
Jeannine M. Trewhella, Peekskill, NY (US);
Ronald P. Luijten, Horgen, CH;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A redundant configurable VCSEL laser array optical light source which provides for integrating optical communications capabilities into manufacturing processes for a substrate or submount such as a silicon or ceramic substrate, a multi-chip module, a package board, backplane or similar component. Multiple, spatially proximate lasers and photodetectors are provided as part of an optical transmitter or receiver module to simplify assembly of the module, particularly alignment of a laser or photodetector to an optical fiber or waveguide. A feedback loop and control logic select those laser(s) or photodiodes(s) which are most strongly coupled to the transmission medium to produce the best signals. This approach greatly simplifies optical alignment, to improve yield and relax mechanical tolerances, leading to lower assembly costs and higher manufacturing yields.