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Electro-tunable optical diode based on photonic bandgap liquid-crystal heterojunctions

Title
Electro-tunable optical diode based on photonic bandgap liquid-crystal heterojunctions
Authors
Hwang J.Song M.H.Park B.Nishimura S.Toyooka T.Wu J.W.Takanishi Y.Ishikawa K.Takezoe H.
Ewha Authors
우정원
SCOPUS Author ID
우정원scopus
Issue Date
2005
Journal Title
Nature Materials
ISSN
1476-1122JCR Link
Citation
Nature Materials vol. 4, no. 5, pp. 383 - 387
Indexed
SCI; SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
An optical heterojunction photonic bandgap (PBG) structure consisting of an anisotropic nematic layer sandwiched between two cholestric liquid-crystal layers with different helical pitches was investigated. A half-wave phase retarders layer made of planar nematic liquid crystal (NLC) was sandwiched two PBG CLC layers with the same sense of helix handedness but different pitches. The optical diode action in the optical heterojunction anisotropic structure (OHAS) was analyzed. With its advantages of easy fabrication and electro-tunability, it was found that the structure has wide potential application in photonic devices that make use of propagation-direction dependent operation.
DOI
10.1038/nmat1377
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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