Journal
JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS
Volume 10, Issue 5, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1464-4258/10/5/055203
Keywords
optical devices; photonic integrated circuits; heterostructures waveguides; photonic crystals; FDTD
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In this paper, a heterostructure channel drop filter in two-dimensional photonic crystals based on mirror cavities is investigated. First a channel drop filter using mirror cavities is presented. Then in order to achieve a three output port filter, we present a heterostructure built on a hybrid two-dimensional (2D) photonic crystal that includes two different refractive indices. Our numeric simulation with the finite-difference time-domain (FDTD) technique shows that the heterostructure has acceptable output efficiency over 80%. Finally, by applying a theoretical approach (coupled mode theory), the physical mechanism behind these structures is explained.
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