1 Ocak 2018 Dergi makalesi Açık Erişim

Cetindag, S. Kaan; Toy, M. Fatih; Ferhanoglu, Onur; Civitci, Fehmi

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  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/29747</identifier>
  <creators>
    <creator>
      <creatorName>Cetindag, S. Kaan</creatorName>
      <givenName>S. Kaan</givenName>
      <familyName>Cetindag</familyName>
      <affiliation>Istanbul Tech Univ, Dept Elect &amp; Commun Engn, TR-34469 Istanbul, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Toy, M. Fatih</creatorName>
      <givenName>M. Fatih</givenName>
      <familyName>Toy</familyName>
      <affiliation>Istanbul Medipol Univ, Dept Biomed Engn, TR-34810 Istanbul, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Ferhanoglu, Onur</creatorName>
      <givenName>Onur</givenName>
      <familyName>Ferhanoglu</familyName>
      <affiliation>Istanbul Tech Univ, Dept Elect &amp; Commun Engn, TR-34469 Istanbul, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Civitci, Fehmi</creatorName>
      <givenName>Fehmi</givenName>
      <familyName>Civitci</familyName>
      <affiliation>Istanbul Tech Univ, Dept Elect &amp; Commun Engn, TR-34469 Istanbul, Turkey</affiliation>
    </creator>
  </creators>
  <titles>
    <title>A Speckle-Enhanced Prism Spectrometer With High Dynamic Range</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>2018</publicationYear>
  <dates>
    <date dateType="Issued">2018-01-01</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/29747</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1109/LPT.2018.2879247</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="http://www.opendefinition.org/licenses/cc-by">Creative Commons Attribution</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">We present a novel spectrometer device offering a wide wavelength range and high resolution. The device builds upon a conventional prism spectrometer; however, an additional scattering medium is introduced to generate a wavelength-dependent speckle pattern on the detector array. Simultaneous use of the prism and the scattering medium allows for both improved resolution and wavelength range. The generated speckle pattern secures a significant improvement in the resolution (up to 100 folds) and dynamic range over a conventional prism spectrometer. With the proposed spectrometer, implemented using a CCD camera, we demonstrate up to 17-pm resolution at 855-nm central wavelength and 756.5-nm wavelength range revealing a dynamic range of similar to 44 500. The dynamic range could be further improved upon using a detector array having larger area and a scattering medium offering a nar-rower spectral correlation function. With further development, the proposed device could be useful in a variety of spectroscopy applications, such as deep imaging of retinal layers in optical coherence tomography.</description>
  </descriptions>
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