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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 44, Iss. 12 — Apr. 20, 2005
  • pp: 2409–2415

Fabrication of compact turning mirrors in silicon-on-insulator materials

Wenhui Wang, Yanzhe Tang, Tie Li, Yaming Wu, Jianyi Yang, and Yuelin Wang  »View Author Affiliations


Applied Optics, Vol. 44, Issue 12, pp. 2409-2415 (2005)
http://dx.doi.org/10.1364/AO.44.002409


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Abstract

A turning mirror is a key component in compact optical waveguide devices and high-density integrated optics. An improved two-step method for fabrication of high-quality, compact turning mirrors in silicon-on-insulator materials is proposed. First, inductively coupled plasma etching is applied to produce the turning mirror, which keeps the turning mirror compact; then silicon wet anisotropic etching is applied to enhance the quality of the turning mirror by of its polishing surface, correcting its orientation, and improving the verticality. The shape of the turning mirror fabricated by the two-step method is hexagonal or octagonal, matching the optical field of the rib waveguide well. A large effective mirror size to reflect light waves and reduced shrinkage of the mirror size during etching guarantee that a mirror produced by this two-step method will be more compact than previously designed mirrors.

© 2005 Optical Society of America

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(130.5990) Integrated optics : Semiconductors
(230.4000) Optical devices : Microstructure fabrication
(230.4040) Optical devices : Mirrors
(230.7370) Optical devices : Waveguides

History
Original Manuscript: June 23, 2004
Revised Manuscript: November 3, 2004
Manuscript Accepted: November 8, 2004
Published: April 20, 2005

Citation
Wenhui Wang, Yanzhe Tang, Tie Li, Yaming Wu, Jianyi Yang, and Yuelin Wang, "Fabrication of compact turning mirrors in silicon-on-insulator materials," Appl. Opt. 44, 2409-2415 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-12-2409


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