TITLE

All-optical intensity modulation of near infrared light in a liquid crystal channel waveguide

AUTHOR(S)
d’Alessandro, Antonio; Asquini, Rita; Trotta, Marco; Gilardi, Giovanni; Beccherelli, Romeo; Khoo, Iam Choon
PUB. DATE
August 2010
SOURCE
Applied Physics Letters;8/30/2010, Vol. 97 Issue 9, p093302
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We demonstrate a nonlinear optical channel waveguide made of E7 nematic liquid crystal infiltrated in a silica on silicon groove. Near infrared light at the wavelength of 1560 nm fiber coupled to the core of the liquid crystal waveguide was optically modulated by an optical beam with power below 25 mW by exploiting the optical Freedericks transition. By modeling the optical molecular reorientation in the nematic liquid crystal confined in a waveguiding geometry we are able to reproduce the experimental results.
ACCESSION #
53421643

 

Related Articles

  • Optical manipulation and rotation of liquid crystal drops using high-index fiber-optic tweezers. Abedin, Kazi Sarwar; Kerbage, Charles; Fernandez-Nieves, Alberto; Weitz, David A. // Applied Physics Letters;8/27/2007, Vol. 91 Issue 9, p091119 

    We report an optical fiber tweezer based on high-index material for trapping and optical manipulation of microscale particles in water. The use of a high-index material increases the trapping force with respect to the more common silica, through tighter focusing of light. We demonstrate the...

  • Modeling of Optical Waveguides and Devices by Combination of the Method of Lines and Finite Differences of Second Order Accuracy. Pregla, Reinhold // Optical & Quantum Electronics;Jan2006, Vol. 38 Issue 1-3, p3 

    Based on generalized transmission line equations a novel impedance/admittance transformation algorithm with finite differences is proposed and substantiated. The algorithm is of second order accuracy. It is combined with the Method of Lines. The algorithm is suitable for eigenmode calculations...

  • Low loss optical waveguides fabricated by thermal nitridation of oxidized silicon. Zelmon, David E.; Boyd, Joseph T.; Jackson, Howard E. // Applied Physics Letters;8/15/1985, Vol. 47 Issue 4, p353 

    This letter describes the first optical waveguides fabricated by thermal nitridation of SiO[sub 2]. This process has allowed us to create layers of silicon oxynitride of about 100-nm thickness in 4.8-µmthick silicon dioxide layers by exposing thermally oxidized silicon wafers to an ammonia...

  • Lateral coupling between a silicon-oxinitride waveguide and an amorphous Si photodiode. Kapser, K.; Deimel, P. P. // Journal of Applied Physics;4/1/1992, Vol. 71 Issue 7, p3614 

    Provides information on a study that report the integration of a silicon-oxinitride optical waveguide and an a-Si:H p-i-n photodiode. Details on the deposition of the oxinitride waveguide; Characteristics of the detector layer; Result of the experiment.

  • Fabrication and characteristics of three-dimensionally buried porous silicon optical waveguides. Takahashi, Morio; Koshida, Nobuyoshi // Journal of Applied Physics;11/1/1999, Vol. 86 Issue 9, p5274 

    Focuses on a study which presented a fabrication technology of three-dimensionally buried porous silicon optical waveguides along with its fundamental characteristics. Experiments and analysis; Results and discussion; Conclusions.

  • Silicon photonics: Low-loss and compact. Won, Rachel // Nature Photonics;Oct2015, Vol. 9 Issue 10, p631 

    The article offers information on a study regarding the use of silicon nitride (Si3N4) as waveguides in photonic integrated circuits (PICs).

  • Determination of magnetic anisotropies in ultrathin iron films on vicinal Si(111) substrate by the ferromagnetic resonance. Hai-Feng Du; Wei He; Hao-Liang Liu; Ya-Peng Fang; Qiong Wu; Tao Zou; Xiang-Qun Zhang; Young Sun; Zhao-Hua Cheng // Applied Physics Letters;4/5/2010, Vol. 96 Issue 14, p142511 

    Fe single crystal film with thickness of 45 monolayer was fabricated on vicinal Si(111) substrate using ultrathin p(2×2) iron silicide as buffer layer. Scanning tunneling microscope images show that the Fe nanoclusters form chains on vicinal substrate. The first- and second-order...

  • Silicon-based near-infrared tunable filters filled with positive or negative dielectric anisotropic liquid crystals. Pucker, G.; Mezzetti, A.; Crivellari, M.; Bellutti, P.; Lui, A.; Daldosso, N.; Pavesi, L. // Journal of Applied Physics;1/15/2004, Vol. 95 Issue 2, p767 

    Complementary metal-oxide-semiconductor-compatible tunable Fabry–Pérot microcavities filled with liquid crystals (LCs) were realized and studied in the near-infrared region. The microcavities were produced by chip bonding technique, which allows one to infill LC between two [SiO[sub...

  • Improved liquid crystals for vertical alignment applications. Cheng Chen; Bos, Philip J.; Kim, Julie; Quan Li; Anderson, James E. // Journal of Applied Physics;6/15/2006, Vol. 99 Issue 12, p123523 

    Liquid crystals with a large negative dielectric anisotropy are difficult to align vertically on silicon oxide surfaces and sometimes even on polyimides. An interesting method has been found to generate high quality vertical alignment by doping the host liquid crystal with materials that have a...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics