Journal ArticleDOI
Optical switch using a deformable liquid droplet
Hongwen Ren,Shin-Tson Wu +1 more
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TLDR
An optical switch based on a deformable liquid droplet that has potential applications in light shutters, variable optical attenuators, adaptive irises, and displays is demonstrated.Abstract:
An optical switch based on a deformable liquid droplet is demonstrated. The device consists of a clear liquid droplet surrounded by a black liquid. In the voltage-off state, the incident light is absorbed by the black liquid. As the voltage increases, the dielectric force reshapes the droplet by uplifting its dome. As the dome touches the top substrate, a clear channel is opened, allowing the incident light to pass through. Once the voltage is removed, the deformed droplet relaxes back to its original shape and the channel is closed. Devices based on such an operation mechanism have potential applications in light shutters, variable optical attenuators, adaptive irises, and displays.read more
Citations
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Electrowetting driven optical switch and tunable aperture
TL;DR: An electrowetting based optical switch with tunable aperture under the influence of an electric field a non-transparent oil film can be replaced locally by a transparent water drop creating an aperture through which light can pass.
Journal ArticleDOI
Study and Analysis of Routing and Spectrum Allocation (RSA) and Routing, Modulation and Spectrum Allocation (RMSA) Algorithms in Elastic Optical Networks (EONs)
TL;DR: This study reviews and analyzes one of the most important topics in EON namely Routing and Spectrum Allocation (RSA), and compares them through both quality of performance and computational complexity aspects for the first time.
Journal ArticleDOI
Dielectrophoretically tunable optofluidic devices
Su Xu,Hongwen Ren,Shin-Tson Wu +2 more
TL;DR: The underlying operation principles of dielectrophoretically tunable optofluidic devices are explained and some recent progress in this field is reviewed, covering the topics of adaptive lens, beam steering, iris, grating, optical switch/attenuator and single pixel display.
Journal ArticleDOI
Integrated Optofluidic Iris
TL;DR: In this paper, an optofluidic iris which uses the absorption of an opaque liquid in combination with a transparent liquid for defining optical apertures of variable diameters, tuned by directly deforming a ring-shaped liquid-liquid interface using electrowetting on dielectrics, is presented.
Journal ArticleDOI
Optical switch based on tunable aperture
Lei Li,Chao Liu,Qiong-Hua Wang +2 more
TL;DR: The results show that the system can obtain a high optical attenuation and reasonable response time and has potential application in light shutters, variable optical attenuators, and adaptive irises.
References
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Journal ArticleDOI
Video-speed electronic paper based on electrowetting
TL;DR: It is shown that electrowetting can also be used to form the basis of a reflective display that is significantly faster than electrophoretic displays, so that video content can be displayed.
Journal ArticleDOI
Variable-focus liquid lens for miniature cameras
Stein Kuiper,Bhw Hendriks +1 more
TL;DR: In this paper, it was demonstrated that two immiscible liquids in a tube form a self-centered lens with a high optical quality, and the motion of the lens during a focusing action was studied by observation through the transparent tube wall.
MonographDOI
Liquid crystal dispersions
TL;DR: In this article, a Catalogue of Droplet Structures of Gels and Porous Glasses is presented, along with methods for Probing Droplet Structure Catalogue and Configurations, and Electro-Optical Effects: Light Scattering Dichroic Effects Droplet Reorientation Fields Response Times Hysteresis and Persistence Effects Film Dielectric Properties Nonlinear Optical Effects.
Journal ArticleDOI
Electrically switchable volume gratings in polymer‐dispersed liquid crystals
Richard L. Sutherland,Vincent P. Tondiglia,Lalgudi V. Natarajan,Timothy J. Bunning,W. Wade Adams +4 more
TL;DR: In this article, the authors reported electrical switching of the diffraction efficiency in volume Bragg gratings written holographically in polymer-dispersed liquid crystals (PDLCs).
Journal ArticleDOI
Cholesteric liquid crystal/polymer dispersion for haze‐free light shutters
TL;DR: In this paper, a new dispersion involving a polymer in low concentration with a cholesteric liquid crystal is reported, and two types of light modulators from these materials are described as a normal mode shutter which is opaque (light scattering) in the field-off state and transparent in field-on state and a reverse-mode shutter with the opposite field conditions.
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