planar lightwave circuit; air trenches; ring resonator; Mach-Zehnder interferometer; total internal reflection; guided waves; integrated optics
We discuss the design of a compact ring resonator (RR) and Mach-Zehnder interferometer (MZI) in a low-refractive-index-contrast waveguide material system through the use of air trenches. A narrow air trench at the intersection of one input and two output waveguides can function as a high-efficiency splitter, while wider air trenches operate as waveguide bends. We first discuss the design of individual splitters and bends and then show how they can be used to realize a compact MZI and RR. The RR has a footprint of only 70 X 100 um, and its optical efficiency at the drop wavelengths is 86%. The free spectral range and full width at half maximum are 7.2 and 0.5 nm, while the Q factor is >3,000. The MZI occupies only 165 X 130 um, and its calculated optical efficiency is 90%.
Original Publication Citation
Seunghyun Kim, Jianhua Jiang, and Gregory P. Nordin, Design of compact polymer Mach-Zender interferometer and ring resonator with air trench structures, Opt. Eng. 45, 5462 (26)
BYU ScholarsArchive Citation
Kim, Seunghyun; Jiang, Jianhua; and Nordin, Gregory P., "Design of compact polymer Mach-Zender interferometer and ring resonator with air trench structures" (2006). All Faculty Publications. 1350.
SPIE -- Society of Photo-Optical Instrumentation Engineers
Ira A. Fulton College of Engineering and Technology
Electrical and Computer Engineering
© 2006 Society of Photo-Optical Instrumentation Engineers. This paper was published in Optical Engineering and is made available as an electronic reprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
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