Method and apparatus for improved optical elements for vertical PCB fiber optic modules

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United States of America Patent

PATENT NO 6901221
SERIAL NO

09321308

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Fiber optic transmitter and receiver electrical elements are implemented on separate vertical boards in fiber optic modules. An optical block implements lenses and reflecting surfaces to minimize manufacturing costs. The light receiver and light transmitter are mounted to receive and transmit non-orthogonal to the fiber axis to avoid optical cross talk. In one embodiment, receiver and transmitter are mounted at an angle greater than forty-five degrees with a perpendicular line to the reflective surfaces. In another embodiment, receiver and transmitter are mounted at an angle less than forty-five degrees with a perpendicular line to the reflective surfaces. The reflective surface for transmission may be a beam shaper to improve light beam uniformity and optical coupling and to avoid active alignment. The vertical boards have ground planes facing each other to minimize electrical cross talk. An optional shielded housing provides further shielding for reducing EMI.

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Patent Owner(s)

  • LUMENTUM OPERATIONS LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jiang, Wenbin Calabasas, CA 137 3764
Milster, Tom D Tucson, AZ 5 280
Wei, Cheng Ping Gilbert, AZ 28 1572

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