Optical module having self-aligned optical element and optical w

Details Optical module having self-aligned optical element and optical w Optical module having self-aligned optical element and optical w

1995-12-13

1997-08-26

Ngo, John

Optical waveguides

With optical coupler

Particular coupling structure

385 89, 385 88, 385147, 359900, G02B 636

Patent

active

056618310

ABSTRACT:
An optical module has an optical wave-guide structure formed on a silicon substrate and a laser diode array solder bonded to first pads patterned on the silicon substrate in a self-aligned manner by virtue of surface tension of solder during a reflow stage, and the first pads are shaped into a rectangular parallelopiped configuration so as to make a ratio of a solder bump height to a pad width large without decrease of the volume of the solder bump, thereby generating large surface tension.

REFERENCES:
patent: 5160409 (1992-11-01), Moore et al.
patent: 5247597 (1993-09-01), Blacha et al.
patent: 5283446 (1994-02-01), Tasisawa
Deshmukh R. D., et al. "Active Atmosphere Solder Self-Alignment and Bonding of Optical Components", International Journal of Microcircuits and Electronic Packaging, vol. 16, No. 2, 2.sup.nd Quarter 1993, pp. 97-107.
J. Sasaki et al.; "Self-aligned Assembly for Optical Devices Using AuSn Solder Bump Bonding"; Institute of Electronics, Information and Communication Engineers, OQE 93-145 (1993-12); pp. 61-66.
M. J. Wale et al.; "Self-Aligned Flip-Chip Assembly of Photonic Devices with Electrical and Optical Connections"; IEEE Transactions on Components, Hybrids, and Manufacturing Technology, vol. 13, No. 4, Dec. 1990; pp. 780-786.

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