Printed board unit for optical transmission and mounting method

Details Printed board unit for optical transmission and mounting method Printed board unit for optical transmission and mounting method

2005-10-25

2005-10-25

Bovernick, Rodney (Department: 2874)

Optical waveguides

Integrated optical circuit

C385S088000, C385S089000

Reexamination Certificate

active

06959125

ABSTRACT:
It is an object of the present invention to enhance laser beam transmitting efficiency by accurately controlling an interval between a light emitting (light receiving) element (20) and an optical wave-guide substrate (1) without causing any fluctuation in the interval in a mounting structure of the light transmitting element in which the light emitting (light receiving) element (20) is mounted on the optical wave-guide substrate (1). When the light emitting (light receiving) element is joined to the sub-mount chip (4) and when the sub-mount chip (4) is joined to the optical wave-guide while the element is being directed to the substrate side, the sub-mount chip and the optical wave-guide substrate are joined to each other by the solder bump (6). A post (5) is arranged for regulating an interval between the light emitting (light receiving) element and the optical wave-guide substrate.

REFERENCES:
patent: 5513288 (1996-04-01), Mayer
patent: 6330377 (2001-12-01), Kosemura
patent: 6739761 (2004-05-01), Tsukamoto et al.
patent: 6759687 (2004-07-01), Miller et al.
patent: 2004/0057648 (2004-03-01), Yunus
patent: 2005/0013557 (2005-01-01), Lu
patent: 9-26530 (1997-01-01), None
patent: 2000-81524 (2000-03-01), None
patent: 2003215371 (2003-07-01), None

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