Tunable Liquid Crystal-Resonant Grating Filter Fabricated by Nanoimprint Lithography

We demonstrate a tunable filter consisting of a subwavelength resonant grating filter cladded by a liquid crystal cell. The resonant wavelength of the grating filter is tuned by electrically varying the refractive index of the liquid crystal. A tuning range of around 20 nm has been achieved.

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Bibliographic Details
Published in:IEEE photonics technology letters 2007-10, Vol.19 (19), p.1457-1459
Main Authors: Chang, A.S.P., Morton, K.J., Hua Tan, Murphy, P.F., Wei Wu, Chou, S.Y.
Format: Article
Language:English
Subjects:
Gratings
Laser tuning
liquid crystal devices
Liquid crystals
Liquids
Lithography
Nanocomposites
Nanolithography
Nanomaterials
Nanostructure
Optical filters
Optical modulation
Optical refraction
Optical tuning
Resonance
resonant waveguide grating filter
Tunable circuits and devices
tunable filter
Tuning
Wavelengths
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Description
Summary:We demonstrate a tunable filter consisting of a subwavelength resonant grating filter cladded by a liquid crystal cell. The resonant wavelength of the grating filter is tuned by electrically varying the refractive index of the liquid crystal. A tuning range of around 20 nm has been achieved.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2007.903719