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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 44, Iss. 19 — Jul. 1, 2005
  • pp: 3985–3991

Design and fabrication of a microlens on the sidewall of an optical fiber with a metallized 45° end face

Myun-Sik Kim, Kyoung-Woo Jo, and Jong-Hyun Lee  »View Author Affiliations


Applied Optics, Vol. 44, Issue 19, pp. 3985-3991 (2005)
http://dx.doi.org/10.1364/AO.44.003985


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Abstract

We propose a method for designing a self-aligned microlens. We have improved its fabrication by employing metallization on a 45° angled surface of the optical fiber. We designed the focal length of the microlens to be 14.0 µm, considering the dimensions of a scanning near-field optical microscopy (SNOM) probe, and we calculated possible dimensions of diameter and height by the ray-tracing method. The modeling of lens formation was also carried out with two assumptions: no volume change and no movement of peripheral parts of the photoresist (PR) on the substrate during reflow. To fabricate a microlens of diameter 16.0 µm and height 5.0 µm we exposed a coated PR to UV light guided into the optical fiber, followed by optimized reflow of 150 °C for 2 min. For this microlens the focal length and the beam waist were 14.0 and 1.4 µm, respectively. This lens can be used for compact optical data storage.

© 2005 Optical Society of America

OCIS Codes
(060.2340) Fiber optics and optical communications : Fiber optics components
(210.0210) Optical data storage : Optical data storage
(220.0220) Optical design and fabrication : Optical design and fabrication

History
Original Manuscript: February 20, 2004
Revised Manuscript: December 20, 2004
Manuscript Accepted: December 20, 2004
Published: July 1, 2005

Citation
Myun-Sik Kim, Kyoung-Woo Jo, and Jong-Hyun Lee, "Design and fabrication of a microlens on the sidewall of an optical fiber with a metallized 45° end face," Appl. Opt. 44, 3985-3991 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-19-3985

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