The Whitaker Corporation

Digital Optics Corporation

Lasertron

Ping Zhou

Hongtao Han

Robert Addison Boudreau, Sr

Michael R Feldman

William Hudson Welch

Terry P Bowen

Michael Aaron Kadar-Kallen

Robert A Boudreau

Dennis P Bowler

Randall Brian Wilson

John R Rowlette, Sr

Robert D TeKolste

John Woodhouse

Jared David Stack

Daniel Pulver

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.

Tilted notched for passive optical alignment

An optical bidirectional link comprising: a module having a lower surface and an upper surface. The upper surface having disposed thereon a submodule having an optical transmitter and detector mounted thereon. Circuitry mounted on the upper surface. The circuitry having electronic components for effecting bidirectional communication via the optical transmitter and detector. A cover disposed over the upper surface of the module, wherein the submodule further comprises a silicon substrate having an optical fiber disposed in v-groove, a laser, reflective surfaces, and a holographic plate disposed on an upper surface of the silicon substrate.

Bidirectional link submodule with holographic beamsplitter

A dielectric substrate of a material such as silicon is used to provide controlled impedance waveguides for coupling an optoelectronic device to an electronic device. The impedance is controlled by varying the thickness of the dielectric between the signal lines and the ground plane. In the preferred embodiment, the crystallographic structure of the silicon is employed to achieve great precision of the dielectric thickness.

Controlled impedance lines connected to optoelectronic devices

Growing community of inventors

Middletown, PA, United States of America

Ping Zhou