Researcher:
Akatlar, Onur

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Master Student

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Onur

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Akatlar

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Akatlar, Onur

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2006 - 20074

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Researcher Of Publications: search.filters.isAuthorOfPublication.ab6f534e-a550-486e-9a9d-1609cd664967

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    PublicationOpen Access
    Silicon photonics with microspheres
    (Society of Photo-optical Instrumentation Engineers (SPIE), 2006) Department of Physics; N/A; Serpengüzel, Ali; Akatlar, Onur; Kurt, Adnan; Faculty Member; Teaching Faculty; Department of Physics; College of Sciences; College of Engineering; 27855; N/A; 194455
    Silicon microspheres coupled to optical fibers have been used for optical channel dropping in the near-IR. The observed morphology dependent resonances had quality factors of 100000. These optical resonances provide the necessary narrow linewidths, that are needed for high resolution optical filtering applications in the near-IR. In addition to filtering, detection, and switching applications of this photonic system is studied in the near-IR as well as far-IR. The silicon microsphere shows promise as a building block for silicon photonics in the near-IR as well as, mid-IR, and far-IR.
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    PublicationOpen Access
    Silicon microspheres for terahertz communication
    (American Institute of Physics (AIP) Publishing, 2007) Department of Physics; Akatlar, Onur; Serpengüzel, Ali; Faculty Member; Department of Physics; College of Sciences; N/A; 27855
    Silicon microspheres can be used for free space optical communication applications in the THz communication bands. The morphology dependent resonances of the microsphere have quality factors of 100000, which provide the narrow linewidths for high resolution filtering, Raman lasers, modulators, and CMOS compatible detectors.
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    PublicationOpen Access
    Silicon microspheres for wavelength division multiplexing in the THz band - art. no. 61250T
    (Society of Photo-optical Instrumentation Engineers (SPIE), 2006) Department of Physics; Serpengüzel, Ali; Akatlar, Onur; Faculty Member; Department of Physics; College of Sciences; 27855; N/A
    Microspheres possess high quality factor morphology-dependent resonances, i.e., whispering gallery modes. Additionally, silicon is proving itself to be an excellent optical material. We have studied the feasibility of silicon microspheres as a optical filters at THz communication frequencies. The silicon microsphere has a radius of 500 gm and a refractive index of 3.4. Elastic scattering spectra are calculated for TE and TM polarizations for wavelengths between 90 mu m and 100 mu m in the THz communication band. The high quality factor morphology dependent resonances are found to have a repetitive mode spacing of 1.2 mu m.
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    PublicationOpen Access
    Silicon microspheres for mid infrared photonics
    (Society of Photo-optical Instrumentation Engineers (SPIE), 2007) Department of Physics; Akatlar, Onur; Serpengüzel, Ali; Faculty Member; Department of Physics; College of Sciences; N/A; 27855
    Microspheres possess high quality factor morphology-dependent resonances, i.e., whispering gallery modes. These whispering gallery modes can be used in resonant cavity enhanced applications of optoelectronic devices such as, filters, detector, modulators and switches. Feasibility of silicon microsphere device at Mid-IR frequencies is studied. The high quality factor morphology dependent resonances have repetitive channel separations of 0.124 mu m in silicon microspheres with a radius of 50 mu m at wavelengths between 9.8 mu m and 10.6 mu m.