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Proceedings Paper

Application of femtosecond pulsed laser for optical devices
Author(s): Suk-Jae Jee; Jung-Sik Woo; Ik-Bu Sohn; ManSeop Lee
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Paper Abstract

This paper presents the micro-machining results on optical devices by using Ti:sapphire femtosecond pulsed laser. It has been used successfully for the micro-machining of U-grooves in planar lightwave circuit (PLC) splitter, wedged filber and lensed fiber. U-grooves in PLC splitter is helpful to simplification of the alignment procedure between optical fiber and waveguide in the PLC chip. The insertion loss and the optical return loss of packaged 1 x 8 optical splitter modules which have been presented were less than 11.0 dB and more than 55 dB, respectively. These results also mean that the packaging technique using the passive alignment is excellent and femtosecond pulsed laser micro-machining technique could provide a new PLC packaging technology. The wedged fiber for reduction of reflection loss and the lensed fiber increasing coupling efficiency are also fabricated by laser system. A comparison of direct polishing method with that of laser micro-machining shows that laser technique is more favorable.

Paper Details

Date Published: 8 October 2004
PDF: 5 pages
Proc. SPIE 5662, Fifth International Symposium on Laser Precision Microfabrication, (8 October 2004); doi: 10.1117/12.596339
Show Author Affiliations
Suk-Jae Jee, Phoco Co., Ltd., and Information and Communications Univ. (South Korea)
Jung-Sik Woo, Phoco Co., Ltd., and Information and Communications Univ. (South Korea)
Ik-Bu Sohn, Information and Communications Univ. (South Korea)
ManSeop Lee, Information and Communications Univ. (South Korea)


Published in SPIE Proceedings Vol. 5662:
Fifth International Symposium on Laser Precision Microfabrication
Isamu Miyamoto; Henry Helvajian; Kazuyoshi Itoh; Kojiro F. Kobayashi; Andreas Ostendorf; Koji Sugioka, Editor(s)

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