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Journal Article Adjusting Resonant Wavelengths and Spectral Shapes of Ring Resonators using a Cladding SiN Layer or KOH Solution
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Authors
Sahng Gi Park, Kap Joong Kim, Jong Moo Lee, In Gyoo Kim, Gyung Ock Kim
Issue Date
2009-07
Citation
Optics Express, v.17, no.14, pp.11884-11891
ISSN
1094-4087
Publisher
Optical Society of America(OSA)
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1364/OE.17.011884
Abstract
It is shown that the resonant frequencies and the transmission spectra of ring resonators can be adjusted by depositing or etching the cladding nitride layer on the ring waveguide without introducing an extra loss or extra variations of channel spacing. The cladding nitride layer increases the minimum width of the gap in the coupling region to larger than 150nm which makes it possible to consider photolithography instead of E-beam lithography for the typical design rule of ring filters. KOH silicon etching can also adjust not only the resonance frequencies but also coupling coefficients with a small sacrifice of guiding loss. © 2009 Optical Society of America.
KSP Keywords
Coupling Coefficient, Design rule, E-beam lithography, KOH silicon etching, KOH solution, Minimum width, Nitride layer, Resonance frequency, Resonant Frequency, Ring resonator, Transmission spectra
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