期刊
APPLIED PHYSICS LETTERS
卷 85, 期 7, 页码 1101-1103出版社
AMER INST PHYSICS
DOI: 10.1063/1.1783014
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Previously, we proposed and demonstrated chirped photonic crystal waveguides, in which some structural parameters are gradually changed so that the photonic band characteristic is smoothly shifted. In this letter, we discuss an optical delay line composed of two index-chirped waveguides in a directional coupler structure. A large delay is realized by a low average group velocity of
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