Browsing by Keywords "Integrated optics"
Now showing items 1-17 of 17
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Balancing gain narrowing with self phase modulation: 100-fs, 800-nJ from an all-fiber-integrated Yb amplifier
(IEEE, 2013)There is much progress in Yb-fiber oscillator-amplifier systems, which enable generation of high-repetition-rate, microjoule energies and sub-picosecond pulse widths [1,2]. Given the extremely large total gain factors to ... -
A Compact Silicon-on-insulator Polarization Splitter
(IEEE, 2005)A compact directional coupler-based polarization splitter is designed and realized using silicon-on-insulator (SOI) waveguides. Even though silicon does not have any material birefringence, the high index contrast obtained ... -
Computer aided analysis and simulation of complex passive integrated optical circuits
(Bilkent University, 1993)In this thesis, a method is developed for the analysis and simulation of arbitrary complex, single layer, rectilinear, passive optical interconnection circuits. The method considers dielectric waveguide type optical ... -
Computer-aided analysis and simulation of complex passive integrated optical circuits of arbitrary rectilinear topology
(SPIE, 1994-05)Optical interconnections can be beneficially employed at the chip-to-chip or backplane level of high-performance computing systems. One method of providing high speed and density interconnections among a large number of ... -
Doping management for high-power fiber lasers: 100 W, few-picosecond pulse generation from an all-fiber-integrated amplifier
(Optical Society of America, 2012-07-16)Thermal effects, which limit the average power, can be minimized by using low-doped, longer gain fibers, whereas the presence of nonlinear effects requires use of high-doped, shorter fibers to maximize the peak power. We ... -
An elastomeric grating coupler
(IOP Institute of Physics, 2006)We report on a novel nondestructive and reversible method for coupling free space light to planar optical waveguides. In this method, an elastomeric grating is used to produce an effective refractive index modulation on ... -
Electro-optic modulation of InAs quantum dot waveguides
(Technische Universiteit Eindhoven, 2008)The linear electro-optic properties in waveguides containing self-organized In As quantum dots were studied experimentally. Fabry-Perot measurements at 1515 nm on InAs/GaAs quantum dot structures yield a significantly ... -
Integrated asymmetric vertical coupler pressure sensors
(SPIE, 2004)Design and analysis of a novel pressure sensor based on a silicon-on-insulator asymmetric integrated vertical coupler is presented. The coupler is composed of a single mode low index waveguide and a thin silicon slab. ... -
Integrated optical displacement sensors for scanning force microscopies
(Bilkent University, 2003)In this thesis, we have studied the use of integrated optical waveguide devices acting as integrated displacement sensors on cantilevers for scanning probe microscopes. These displacement sensors include integrated optical ... -
Low-power thermooptical tuning of SOI resonator switch
(IEEE, 2006)A wavelength selective optical switch is developed based on a high-Q racetrack resonator making use of the large thermooptic coefficient of silicon. The racetrack resonator was fabricated using a silicon-on-insulator (SOI) ... -
Microjoule-energy, 1 MHz repetition rate pulses from all-fiber-integrated nonlinear chirped-pulse amplifier
(Optical Society of America, 2010-03-23)We demonstrate generation of pulses with up to 4 μJ energy at 1 MHz repetition rate through nonlinear chirped-pulse amplification in an entirely fiber-integrated amplifier, seeded by a fiber oscillator. The peak power and ... -
Monolithic and hybrid silicon-on-insulator integrated optical devices
(Bilkent University, 2005)Silicon, the basic material of electronics industry is rediscovered nowadays for its potential use in photonics and integrated optics. The research activity in silicon integrated optics have been speeding up during the ... -
An optical microcantilever with integrated grating coupler
(IEEE, 2009-06)In this paper, we have fabricated an optical cantilever with an integrated grating coupler. We have used an inexpensive and repeatable method for integrating the grating to the silicon cantilever with a microfabrication ... -
Polarization characteristics of compact SOI rib waveguide racetrack resonators
(IEEE, 2005)We report on the development of compact optical racetrack resonators on silicon-on-insulator (SOI) rib waveguides. We make use of large-cross-section waveguides instead of photonic wire waveguides. We fabricated resonators ... -
Silicon based dielectrics : growth, characterization, and applications in integrated optics
(Bilkent University, 2005)In recent years, growing attention has been paid to silicon based dielectrics, such as silicon oxynitrides, silicon nitrides, and semiconductor doped silicon oxides, all combined under the name silica on silicon technology. ... -
Silicon-on-insulator optical waveguides and waveguide devices
(Bilkent University, 2000)Silicon-on-insulator(SOI) optical waveguides, directional couplers and some types of MMI couplers were designed, fabricated and characterized at a wavelength of 1.55 /im. Effective index method and the single mode ... -
Study of wet oxidized AlxGa1-xAs for integrated optics
(Institute of Electrical and Electronics Engineers, 1999)An investigation of wet oxidized AlxGa1-xAs layers in integrated optical applications is reported. Refractive index and thickness shrinkage of wet oxidized AlxGa1-xAs layers are measured using spectroscopic ellipsometry. ...
