Design and characterization of whispering-gallery spiral waveguides

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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.
Publisher
OPTICAL SOC AMER
Issue Date
2014-03
Language
English
Article Type
Article
Keywords

SILICON CHIP; RESONATOR

Citation

OPTICS EXPRESS, v.22, no.5, pp.5196 - 5208

ISSN
1094-4087
DOI
10.1364/OE.22.005196
URI
http://hdl.handle.net/10203/198975
Appears in Collection
NT-Journal Papers(저널논문)
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