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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 23 — Nov. 7, 2011
  • pp: 22910–22922

Fabrication of three-dimensional micro-photonic structures on the tip of optical fibers using SU-8

Henry E. Williams, Daniel J. Freppon, Stephen M. Kuebler, Raymond C. Rumpf, and Marco A. Melino  »View Author Affiliations

Optics Express, Vol. 19, Issue 23, pp. 22910-22922 (2011)

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A method is reported for fabricating truly three-dimensional micro-photonic structures directly onto the end face of an optical fiber using the cross-linkable resist SU-8. This epoxide-based material is well suited for micro-device fabrication because it is photo-processed as a solid and the cross-linked material is mechanically robust, chemically resistant, and optically transparent. Yet, procedures commonly used to process SU-8, particularly spin-coating, are impractical when the intended fabrication substrate is the end-face of an optical fiber. A melt-reflow process was developed to prepare optical fibers having SU-8 resin deposited at controlled thickness on the fiber end-face. Multi-photon direct laser writing was then used to fabricate various refractive lenses, a compound lens system, and a woodpile photonic crystal within the resin on the end-face of the optical fiber. Data are presented that show how the refractive lenses can be used to alter the output of the optical fiber. This work opens a new path to low-profile integrated photonic devices.

© 2011 OSA

OCIS Codes
(350.3390) Other areas of optics : Laser materials processing
(160.3918) Materials : Metamaterials
(350.4238) Other areas of optics : Nanophotonics and photonic crystals

ToC Category:
Laser Microfabrication

Original Manuscript: August 31, 2011
Revised Manuscript: October 14, 2011
Manuscript Accepted: October 16, 2011
Published: October 27, 2011

Henry E. Williams, Daniel J. Freppon, Stephen M. Kuebler, Raymond C. Rumpf, and Marco A. Melino, "Fabrication of three-dimensional micro-photonic structures on the tip of optical fibers using SU-8," Opt. Express 19, 22910-22922 (2011)

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