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Proceedings Paper

Silicon microlens surface mounted on a v-groove for low-cost optical modules
Author(s): Masahiro Uekawa; Hironori Sasaki; Daisuke Shimura; Kyoko Kotani; Yoshinori Maeno; Takeshi Takamori
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Paper Abstract

We propose a silicon microlens that is mountable on a silicon v-groove platform for low-cost telecommunication optical modules. The proposed silicon microlens has a rod shape which has the diameter of 125 micrometers , identical to a single-mode fiber. Therefore, it can be passively embedded in the v-groove in conjunction with the optical fiber with high precision. We employed diffractive microlens that can be fabricated on the top surface of the rod by conventional LSI technology. Better coupling efficiency between a laser diode and an optical fiber is expected with silicon diffractive lenses as compared with conventional silica ones. The coupling efficiency of -0.7 dB between two single-mode fibers was obtained with silicon lenses significantly better than -1.4 dB of insertion loss obtained by a pair of silica diffractive lenses. With good coupling efficiency and the ease of packaging by surface mount technology (SMT), silicon diffractive microlens is promising for low-cost and high- performance optical module applications.

Paper Details

Date Published: 3 June 2002
PDF: 8 pages
Proc. SPIE 4652, Optoelectronic Interconnects, Integrated Circuits, and Packaging, (3 June 2002); doi: 10.1117/12.469565
Show Author Affiliations
Masahiro Uekawa, OKI Electric Industry Co., Ltd. (Japan)
Hironori Sasaki, OKI Electric Industry Co., Ltd. (Japan)
Daisuke Shimura, OKI Electric Industry Co., Ltd. (Japan)
Kyoko Kotani, OKI Electric Industry Co., Ltd. (Japan)
Yoshinori Maeno, OKI Electric Industry Co., Ltd. (Japan)
Takeshi Takamori, OKI Electric Industry Co., Ltd. (Japan)

Published in SPIE Proceedings Vol. 4652:
Optoelectronic Interconnects, Integrated Circuits, and Packaging
Louay A. Eldada; Randy A. Heyler; John R. Rowlette; John R. Rowlette; Randy A. Heyler, Editor(s)

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