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Liquid crystal holographic grating waveguide: >> http://cew.cloudz.pw/download?file=liquid+crystal+holographic+grating+waveguide << (Download)
Liquid crystal holographic grating waveguide: >> http://cew.cloudz.pw/read?file=liquid+crystal+holographic+grating+waveguide << (Read Online)
liquid crystal waveguide based Fourier transform spectrometer for in-situ and remote gas and chemical sensing,". Proc. SPIE 6977, 69770P, 69770P-11 (2008). 23. K. Kato, T. Hisaki, and M. Date, “In-plane operation of alignment-controlled holographic polymer-dispersed liquid crystal," Jpn. J. Appl. Phys. 38(Part 1, No.
Liquid crystal microdroplet holograms for waveguide WDM applications. Lawrence H. Domash. Foster-Miller, Inc., Photonics Division. 195 Bear Hill Road, Waltham MA 02154. ABSTRACT. Mechanisms of index control and dynamic gratings for single mode waveguides are reviewed. Electronically switchable Bragg gratings
In this work the theoretical model of holographic formation of controllable waveguide channels system in photopolymer-liquid crystalline composition is developed. The ability to control the light propagation conditions in waveguides by external electric field impact is demonstrated.
15 Jan 2009 Caputo R, De Sio L, Sukhov A V, Veltri A and Umeton C 2004 Development of a new kind of switchable holographic grating made of liquid crystal films Tunable integrated optical filter made of a glass ion-exchanged waveguide and an electro-optic composite holographic grating Opt. Express 16 9254-60.
23 Jan 2014 Anisotropic waveguide theory is developed for electrically tunable distributed feedback (DFB) laser from dye-doped holographic polymer dispersed liquid crystal (HPDLC) grating. The period grating structure, optical anisotropy of the liquid crystal (LC) and practical light propagation path in the HPDLC have
The proposed tunable wavelength filter consists of a silicon sampled grating waveguide and ferro-electric liquid crystal (FLC) cladding. The sampled grating waveguide in a silicon-on-insulator (SOI) wafer achieved narrower stop bands than that with the conventional uniform grating structure. Enhanced wavelength shift was
A varied-line-spacing switchable holographic grating is demonstrated through a changeable interference pattern recorded in polymer-dispersed liquid crystal. The pattern is generated by the interference between one plane wave and another cylindrical wave. The line spacing and the period of grating can be controlled by
24 Oct 2016 Organic distributed feedback (DFB) lasers based on holo- graphic polymer dispersed liquid crystal (HPDLC) have attracted more and more attention recently [1–5]. DFB. HPDLC lasers use organic laser dyes or/and conjugated poly- mers [6–10] as active medium materials and HPDLC grating film is used
Novel tuneable optical filter made of a polymer and liquid crystal holographic grating on glass waveguides. Abstract: We present the experimental findings of a novel, switchable guided wave optical filter using a holographic Bragg grating as the optic field perturbation element using an inexpensive fabrication technology.
Optically pumped distributed feedback lasing has been demonstrated in a dye-doped nematic liquid crystal (NLC) waveguide by holographic excitation. The excitation was performed by two-beam interference using Lloyd mirror configuration. With an applied electric field, continuous tuning of the lasing wavelength was
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