TITLE

Wafer-bonded single-crystal silicon slot waveguides and ring resonators

AUTHOR(S)
Briggs, Ryan M.; Shearn, Michael; Scherer, Axel; Atwater, Harry A.
PUB. DATE
January 2009
SOURCE
Applied Physics Letters;1/12/2009, Vol. 94 Issue 2, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We fabricated horizontal Si slot waveguides with a 25 nm SiO2 slot layer by bonding thin Si-on-insulator wafers. After removing the Si substrate and buried oxide from one side of the bonded structure, grating-coupled waveguides and ring resonators were partially etched into the Si/SiO2/Si device layers. The gratings exhibit efficiencies of up to 23% at 1550 nm and the ring resonators were measured to have loaded quality factors near 42 000 for the lowest-order transverse-electric mode, corresponding to a propagation loss of 15 dB/cm. The leaky lowest-order transverse-magnetic mode was also observed with a propagation loss of 44 dB/cm.
ACCESSION #
36258491

 

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