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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 5 — Mar. 10, 2014
  • pp: 5196–5208

Design and characterization of whispering-gallery spiral waveguides

Tong Chen, Hansuek Lee, and Kerry J. Vahala  »View Author Affiliations

Optics Express, Vol. 22, Issue 5, pp. 5196-5208 (2014)

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Whispering gallery delay lines have demonstrated record propagation length on a silicon chip and can provide a way to transfer certain applications of optical fiber to wafer-based systems. Their design and fabrication requires careful control of waveguide curvature and etching conditions to minimize connection losses between elements of the delay line. Moreover, loss characterization based on optical backscatter requires normalization to account for the impact of curvature on backscatter rate. In this paper we provide details on design of Archimedean whispering-gallery spiral waveguides, their coupling into cascaded structures, as well as optical loss characterization by optical backscatter reflectometry.

© 2014 Optical Society of America

OCIS Codes
(220.0220) Optical design and fabrication : Optical design and fabrication
(230.7390) Optical devices : Waveguides, planar

ToC Category:

Original Manuscript: November 5, 2013
Revised Manuscript: January 27, 2014
Manuscript Accepted: February 10, 2014
Published: February 27, 2014

Tong Chen, Hansuek Lee, and Kerry J. Vahala, "Design and characterization of whispering-gallery spiral waveguides," Opt. Express 22, 5196-5208 (2014)

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