TITLE

Gyrotropic band gap optical sensors

AUTHOR(S)
Dissanayake, Neluka K.; Levy, Miguel; Jalali, Amir A.; Fratello, V. J.
PUB. DATE
May 2010
SOURCE
Applied Physics Letters;5/3/2010, Vol. 96 Issue 18, p181105
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Faraday-effect-active photonic band gap structures fabricated in iron garnet films are shown to provide a platform for optical sensing based on refractive index detection. Strong near-band gap-edge polarization rotations serve as a sensitive probe to cover-index changes in birefringent magneto-optic waveguides. A wide index range from air to n=1.6 is explored. Device sensitivity is found to improve with cover index increase. Theoretical analysis of Bloch modes polarization state shows large near stop-band edge rotations and strong sensitivity to cover index. The combined effects of geometrical waveguide birefringence and Faraday rotation contribute to the strength of the sensor response.
ACCESSION #
50309193

 

Related Articles

  • Interesting Inclusion Aggregate in TSAVORITE. Sturman, Nicholas; Du Toit, Garry // Gems & Gemology;Winter2009, Vol. 45 Issue 4, p294 

    The article focuses on a 5.44 carat (ct) green tsavorite that was submitted to a laboratory in Bangkok, Thailand. It notes that the stone exhibited fine examples of long tubes, colorless crystals and small particles throughout. According to the authors, some of the bigger crystals found in the...

  • Garnet polycrystals and the significance of clustered crystallization. Whitney, Donna L.; Seaton, Nicholas C. A. // Contributions to Mineralogy & Petrology;Oct2010, Vol. 160 Issue 4, p591 

    Polycrystalline garnets are common in metamorphic rocks and may form as a result of close spacing of nuclei (if clustering is early) or impingement of larger grains (if clustering occurs later in the growth history). The timing of clustering relative to garnet growth is relevant to understanding...

  • Birthstones for All Seasons. Yates, Jean // Simply Beads;Feb2008, Vol. 4 Issue 1, p42 

    The article presents information on the different birthstones. For the month of January the birthstone is garnet which is said to protect travelers and impart courage. Diamond is the birthstone of those born in April and is known for its exceptional hardness. Those born in October takes opal as...

  • Gem Garnets. Roskin, Gary // JCK;Nov2000, Vol. 171 Issue 11, p99 

    Features garnets, a gemstone used to adorn various jewelries. Species comprising the gem garnets; Color variations; Factors that determine garnets' value; Average price; Bench, care and cleaning.

  • What's Your Birthstone?  // National Geographic Explorer;Nov/Dec2007, Vol. 7 Issue 3, p22 

    The article offers information on the different kinds of birthstones for each month. Garnet is the birthstone for January. These gems come in a rainbow of colors. Amethyst is the birthstone for February while aquamarine is the birthstone for March. The name of this gem means sea. People thought...

  • Controls on Mineralization in Block D′ of the Merelani Tanzanite Deposit, Tanzania. Scheepers, Reyno // Gems & Gemology;2006, Vol. 42 Issue 3, p150 

    Tanzanite is found at only one location on Earth, the western slopes of the Lelatema mountain range ~60 km south-southeast of Mount Kilimanjaro in northeastern Tanzania. The Lelatema Mountains form part of the Eastern Granulite Complex of the Mozambique Orogenic Belt. Tanzanite mineralization...

  • Fluorite impersonating blue color-change garnet. Houran, Jim; Laurs, Brendan M. // Gems & Gemology;Fall2008, Vol. 44 Issue 3, p263 

    The article presents the result of an examination of a relatively large well-formed crystal thought to be blue garnet from Bekily, Madagascar. This blue garnet was shown at the 2008 Tucson gem shows and loane by Jasun and Mandy of Asbury Park, New Jersey. While the stone's crystal form was...

  • COLOURED STONES. Williams, Cara and Bear // Journal of Gemmology;2014, Vol. 34 Issue 4, p286 

    The article focuses on the production of the coloured gem stone almandine or garnet by miner Jason Baskin from the Red Embers mine near Erving, Massachusetts.

  • Hessonite from Somalia. Clark, Bryan // Journal of Gemmology;2014, Vol. 34 Issue 4, p292 

    The article discusses the discovery of the rough orange gemstone hessonite from the local suppliers of gem dealer Dudley Blauwet in Somalia.

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