Title :
Tunable Liquid Crystal-Resonant Grating Filter Fabricated by Nanoimprint Lithography
Author :
Chang, Allan S.P. ; Morton, Keith J. ; Tan, Hua ; Murphy, Patrick F. ; Wu, Wei ; Chou, Stephen Y.
Author_Institution :
Rensselaer Polytech Inst., Troy
Abstract :
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.
Keywords :
diffraction gratings; electro-optical filters; liquid crystal devices; nanolithography; optical tuning; optical waveguide filters; refractive index; resonator filters; soft lithography; liquid crystal cell; nanoimprint lithography; refractive index; resonant wavelength; sub-wavelength resonant grating; tunable filter; tunable liquid crystal-resonant grating filter; tuning range; Gratings; Laser tuning; Liquid crystals; Nanolithography; Optical filters; Optical modulation; Optical refraction; Optical tuning; Resonance; Tunable circuits and devices; Gratings; liquid crystal devices; resonant waveguide grating filter; tunable filter;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.903719
