Journal
OPTICS LETTERS
Volume 34, Issue 9, Pages 1357-1359Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.34.001357
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Funding
- Defense Advanced Research Projects Agency (DARPA)
- National Science Foundation (NSF)
- United States Air Force Office of Scientific Research (AFOSR)
- United States Army Research Office (ARO)
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [0901429] Funding Source: National Science Foundation
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A cladding-modulated Bragg grating implemented using periodic placements of cylinders along a waveguide is proposed in a silicon-on-insulator platform. The coupling strength is varied by changing the distance between the cylinders and the waveguide. This implementation enables precise control and a wide dynamic range of coupling strengths and bandwidths that can be practically achieved for applications with specific bandwidth requirements. Modeling results are verified experimentally, and we demonstrate coupling strengths differing by I order of magnitude (43 and 921 per cm) with bandwidths of 8 and 16 mn, respectively. This method scheme enables weakly coupled devices with high fabrication tolerance to be realized. (C) 2009 Optical Society of America
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