Band-edge-induced Bragg diffraction in two-dimensional photonic crystals

Two-dimensional photonic crystals composed of two orthogonal volume diffraction gratings have been photogenerated in photopolymers. When the read beam is set at the Bragg angle, the diffraction efficiency of the transmission grating is strongly enhanced at the band edge of the reflection grating rec...

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Bibliographic Details
Published in:Optics letters 2006-05, Vol.31 (9), p.1184-1186
Main Authors: QIONG HE, ZAQUINE, Isabelle, MARUANI, Alain, MASSENOT, Sébastien, CHEVALLIER, Raymond, FREY, Robert
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Optical materials
Optics
Photonic bandgap materials
Physics
Polymers and organics
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Summary:Two-dimensional photonic crystals composed of two orthogonal volume diffraction gratings have been photogenerated in photopolymers. When the read beam is set at the Bragg angle, the diffraction efficiency of the transmission grating is strongly enhanced at the band edge of the reflection grating recorded in the material. Such a device provides Bragg operation and enhancement of the diffraction efficiency of the thin diffraction grating together with good wavelength selectivity. Such advantages could be interesting for optical signal processing.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.31.001184