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Appl Opt. 2012 Oct 10;51(29):7089-93. doi: 10.1364/AO.51.007089.

Impact of LOCOS techniques on photonic wire waveguides.

Author information

  • 1Department of Electronics, Carleton University, Ottawa, Ontario, Canada. yxiong1@doe.carleton.ca

Abstract

We use the LOCal oxidation of silicon (LOCOS) method as a fabrication technique to define submicrometer photonic waveguides. We attempted fabricating the wire waveguides with two different masking processes, one with a stack of pad oxide and silicon nitride layers, and the other with a single silicon nitride layer. The smallest waveguide we achieved had a cross-section profile of 280 nm×650 nm. The propagation loss of the waveguides was measured by the cut-back method, and the bending loss was measured by employing the serpentine pattern. The minimum propagation loss achieved was 8.78 dB/cm and the bending loss was 0.0089 dB/90° bend for a 5 μm bending radius.

PMID:
23052089
[PubMed]
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