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We used novel Monte-Carlo simulations with the Nonlinear Schrödinger Equation to analyze changes in timing-jitter after optical propagation within silicon nanowire-waveguides subjected to two-photon absorption; this absorption was found to attenuate the timing jitter.
Data are presented demonstrating, to our knowledge, the first monolithic chip integrating a semiconductor laser with a spontaneous light emitting diode optical pump that can also act as a heat pump. The light emitting diode operates in the voltage bias regime needed to generate a thermoelectrophotonic heat absorption. Under ideal operation the light emitting diode can efficiently optically pump the...
We propose TE/TM-pass polarizer based on loss mechanism in leaky lithium niobate on insulator ridge waveguides. We show compact polarizers can be designed for both TE and TM polarizations by changing the height of waveguide.
A wavelength selective switch composed of microring resonators and MZI-based thermo-optic switches is fabricated in an SOI waveguide. A wavelength-selective transmittance change of 9.7 dB is demonstrated at a wavelength channel of 1.548 µm.
We have compared a number of well known plasmonic guides in terms of power confinement, normalized power density, and propagation loss. We have identified the relative advantages and limitations of these guides.
X-cut LiNbO3 microwave-lightwave converters using patch-antennas with a narrow-gap are proposed for direct wireless to optical conversion. Conversion efficiency of the proposed devices was improved by 6dB for 26GHz bands compared with z-cut LiTaO3 devices.
We are presenting the development of a nonlinear diffusion model to aid the design and fabrication of annealed proton-exchanged (APE) channel waveguides in zirconium-doped lithium niobate (Zr:LiNbO3 or Zr:LN). This work follows research at Stanford by Bortz [1, 8] and Roussev [2], who developed nonlinear diffusion models for congruently melting LiNbO3 (CLN).
Semiconductors with a high optical nonlinearity, e.g., silicon, which can be lithographically patterned into nanophotonic waveguides or micro-resonators, may lead to on-chip room-temperature telecommunications-band quantum light sources for complex and scalable systems.
A novel structure of optical to THz signal converter consisting of a plasmon waveguide at THz range is proposed and analyzed. High conversion rate between optical and THz signals was estimated. It can be integrated with optical waveguide and THz RTD oscillator.
We experimentally demonstrate a photonic crystal microcavity biosensor with 1pM sensitivity. Radiation loss engineering for high Q and increased mode overlap with analyte are combined to achieve the highest sensitivity in silicon-on-insulator platform.
The transmission amplitudes of SNAP (Surface Nanoscale Axial Photonics) devices are determined and applied to investigation of basic SNAP structures The developed theory and, in particular, the transmission amplitudes determined in this paper are critical for the design of new SNAP devices and can be directly used in the analysis of the performance of fabricated devices.
We present the design and characterization of tapped delay line filters fabricated in two-level photonic integrated circuits. Phase error correction techniques are evaluated to enable spectrum analysis of a 4GHz band with 300MHz resolution.
We propose a new scheme for tunable narrowband filters using a silicon nitride on silicon-on-insulator platform, which enables reconfigurability, low propagation loss, and high power handling capability. Preliminary results are provided.
We present the first experimental demonstration of a novel class of hybrid III–V on silicon microlasers. This new type of laser revolves around the concept of resonant mirrors: two silicon cavities, directly coupled to the III–V laser mesa, provide high, narrow band reflection over a short distance. This results in a device that measures only 55 µm by 2µm and shows single-mode laser emission with...
Hybrid III–V/silicon lasers for short reach optical interconnect applications need to have a modest power dissipation and preferably also a small footprint. Furthermore they should be free of mode hops even under varying temperature conditions. In this paper a number of designs will be discussed that address this set of requirements.
We propose and experimentally demonstrate a novel optical modulator based on a photonic crystal resonator vertically coupled to large mode area bus waveguide.
We experimentally demonstrated a highly compact 1-to-2 multimode interference splitter to achieve polarization insensitive ultra-low loss behavior. The excess loss is 0.112 dB and 0.184 dB for TE and TM mode, respectively.
We demonstrate an integrated silicon and ultra-low-loss silica waveguide platform. Coupling between layers is achieved with (0.4±0.2) dB of loss per transition and a 20 nm 3-dB bandwidth.
A novel polarization splitting is proposed through plasmonic-dielectric coupling with ultrashort coupling length. Extinction ratios of 20.8 dB and 17.0 dB for TE and TM polarizations are achieved at a coupling length of 4.13 µm.
We discuss an analytic expression for the spectral shape of propagating surface plasmon polaritons (SPPs). Based on Drude's model, the SPP spectral deformation, determined by differences in the intensity decay length, has been confirmed.
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