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Optical Engineering

Compact trench-based silicon-on-insulator rib waveguide ring resonator with large free spectral range
Author(s): Yusheng Qian; Seunghyun Kim; Jiguo Song; Weisheng Hu; Greg L. Wojcik; Gregory P. Nordin
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Paper Abstract

We demonstrate a compact trench-based silicon-on-insulator (SOI) rib waveguide ring resonator comprised of trench-based bends and splitters. It has a perimeter of 50 μm and occupies an area of only 25×25 μm. The measured free spectral range (FSR) is 13.2 nm, which the largest reported for an SOI rib waveguide ring resonator. The measured FSR, full width at half maximum, and quality factor match reasonably well with analytical calculations. Further calculation shows that a FSR of 50.8 nm is achievable for an SOI rib waveguide ring resonator with a perimeter of 15 μm.

Paper Details

PDF: 4 pages
Opt. Eng. 48(12) 124602 doi: 10.1117/1.3274999
Published in: Optical Engineering Volume 48, Issue 12, December 2009

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