Tilted notched for passive optical alignment
AssigneesThe Whitaker Corporation, Lasertron, Inc.
InventorsRobert Addison Boudreau, Dennis Bowler, Hongtao Han, Daniel Pulver, John Woodhouse, Ping Zhou
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Abstract
A technique for passive alignment of an opto-electronic device, such as laser, by alignment fiducials to a silicon wafer board utilizes a tilted notch in the opto-electronic device. This system overcomes limitations using standard etched notches for previous passive alignment systems. Specifically, the tilted notch presents a range of offset distances between the edge of the notch and the active light-emitting spot of the laser. Depending on the location at which the wafer is diced or cleaved, the distance from the notch on the laser to the laser stripe can be adjusted after the laser wafer is fabricated.
Claims22
An apparatus for aligning an optoelectronic device to an optical waveguide, comprising:
- a substrate having at least one front and at least one side alignment pedestal said front and said side alignment pedestals disposed on a top surface of a substrate;
- optoelectronic device having a front surface and a side surface;
- and
- a notch disposed on said side surface, said notch being at a non parallel angle relative to an edge of said side surface.
An alignment apparatus for passive alignment of an optoelectronic device to an optical waveguide comprising a substrate having first and second alignment pedestals on a top surface thereof;
- and optical waveguide disposed on said top surface;
- and optoelectronic device having a first side and a second side;
- and
- a notch having a non parallel angle relative to at least one of said sides, said notch for engaging said first alignment pedestal for aligning said optoelectronic device to said optical waveguide.
Dependencies are inferred from the claim text.