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.
Type:
Grant
Filed:
September 4, 2002
Date of Patent:
November 23, 2004
Assignee:
International Business Machines Corporation
Inventors:
William T. Devine, Jeffrey A. Kash, John U. Knickerbocker, Steven P. Ostrander, Jeannine M. Trewhella, Ronald P. Luijten
Abstract: An interposer, located between an integrated circuit having power, ground and signal connections and a ceramic substrate having power, ground and signal connections, that includes an oxide layer formed on a polished surface of a silicon substrate, a thin film dielectric capacitor formed on the oxide layer, a plurality of metallized that electrically connect to either of the electrodes of the thin film dielectric capacitor, and vias than conduct power, ground and signals between a the ceramic substrate and the integrated circuit. The interposer connects the metallized vias to the integrated circuit by solder connections and also connects the vias conducting power, ground and signals from the ceramic substrate to the interposer by solder connections.
Type:
Grant
Filed:
July 19, 2002
Date of Patent:
September 14, 2004
Assignee:
International Business Machines Corporation
Inventors:
Mukta Ghate Farooq, John U. Knickerbocker, Srinivasa Reddy, Robert Anthony Rita
Abstract: A method and structure for an electronic circuit test and repair apparatus includes both of at least one wiring analyzer to locate circuit shorts and a current source to provide current sufficient to attempt to remove any identified shorts.
Type:
Grant
Filed:
April 10, 2001
Date of Patent:
June 22, 2004
Assignee:
International Business Machines Corporation
Inventors:
Roger M. Eddy, Charles J. Hendricks, Thomas Morrison, Robert N. Wiggin, Brian J. Wojszynski
Abstract: A method for circuit modification of an microelectronic chip having at least one conductor in an organic dielectric, includes applying a protective inorganic surface layer on top of the organic dielectric, forming at least one window in the protective inorganic surface layer to selectively expose the underlying organic dielectric, etching the organic dielectric in the window area to selectively remove the organic dielectric adjacent to the conductor, and performing at least one process that modifies the conductor.
Type:
Grant
Filed:
January 12, 2001
Date of Patent:
November 25, 2003
Assignee:
International Business Machines Corporation