Sökning: "ultralow loss"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden ultralow loss.

  1. 1. Wafer-level processing of ultralow-loss Si3N4

    Författare :Marcello Girardi; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; waveguide; photonic integrated circuit; multilayer integration; ultralow loss; microcombs i; silicon nitride;

    Sammanfattning : Photonic integrated circuits (PICs) are devices fabricated on a planar wafer that allow light generation, processing, and detection. Photonic integration brings important advantages for scaling up the complexity and functionality of photonic systems and facilitates their mass deployment in areas where large volumes and compact solutions are needed, e. LÄS MER

  3. 2. Ultralow-loss silicon nitride waveguides for nonlinear optics

    Författare :Zhichao Ye; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ultralow loss; Kerr nonlinear optics; parametric amplifier; DKS microcombs; integrated waveguides; silicon nitride;

    Sammanfattning : The field of nonlinear optics relies on the interaction between high-intensity optical waves and nonlinear media. An integrated waveguide with large refractive index contrast allows to highly confine optical waves in a sub-μm^2 area, thus enhancing the optical intensity. LÄS MER

  4. 3. Ultralow noise pre-amplified receiver for free-space optical communications

    Författare :Ravikiran Kakarla; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sensitivity; noise figure; optical injection locking; Phase sensitive amplifier;

    Sammanfattning : The demand for high data rate in space communication links is increasing due to the growth of space exploration missions inter-satellite, and satellite-to-Earth data transmission. Optical communication systems capable of handling hundreds of Gigabits per second data transmission with a single light carrier and are suitable for such space links. LÄS MER

  5. 4. Advanced characterization techniques of photonic devices with frequency combs

    Författare :Krishna Sundar Twayana; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; electro-optic combs; multi-heterodyne; optical frequency domain spectroscopy; stepped-heterodyne; swept-wavelength interferometry; microcombs; waveguides; microresonators; frequency combs;

    Sammanfattning : Integrated photonics has witnessed remarkable progress in the last decades. Measuring photonic devices in amplitude and phase provides insight into their performance. Swept wavelength interferometry is a prominent technique for the broadband characterization of the complex response. LÄS MER

  7. 5. Comb-based Characterization of Photonic Devices

    Författare :Krishna Sundar Twayana; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; frequency combs; microcombs; waveguides; stepped-heterodyne technique; swept-wavelength interferometry; optical frequency domain spectroscopy; microresonators;

    Sammanfattning : Integrated photonics has been one of the fastest-growing fields in science. Measuring photonic devices in amplitude and phase (i.e. complex response) provides insight into their performance. LÄS MER