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We report a Si3N4 microresonator which simultaneously satisfies single-mode operation, high Q-factor and anomalous dispersion. With controlled high-speed pump-wavelength scanning, we successfully observe a smooth phase-locked Kerr frequency comb transition based on dissipative solitons.
We propose a directional coupler at microwave frequencies based on spoof metal-insulator-metal (MIM) plasmonic structures. The spoof MIM structures consists of specially-designed metal gratings with finite thickness. The coupling length increases almost linearly with the wavelength. The full-wave simulations have been implemented in the microwave frequencies to verify the coupler.
A polymer host material, based on a cycloaliphatic diepoxy cured with a fluorinated dianhydride, has been developed. When activated with the rare‐earth‐iondoped complex, neodymium(thenoyltrifluoroacetone)3 1,10‐phenanthroline, the typical absorption and emission lines of the Nd3+ ion are detected. Luminescence quenching, which usually occurs in polymers due to high‐energy vibrations from O–H and C–H...
Al2O3:Nd3+ channel waveguide amplifiers with various lengths and Nd3+ concentrations were fabricated. Internal net gain at 845-940 nm was investigated and a maximum 3 dB gain at 880 nm was obtained.
Stable, continuous-wave laser emission near 1060 nm for a period of at least 2 h was demonstrated in polymer channel waveguides doped with a Nd-complex. Lasing was also achieved on the 878-nm, quasi-three-level transition.
The design and analysis of a novel photonic crystal (PhC) electro-optic (EO) modulator are presented in this paper. In this device, strong optical confinement in EO polymer core and small group velocity by PhC structure provide a surprise enhancement of EO effect.
Monolithic optoelectronic integrated circuits on CMOS chips are envisioned for realizing future high speed systems. Some of the key technologies that are required include electrically injected, low threshold and highly reliable lasers and the monolithic integration of lasers, waveguides and modulators on Si with Si-based electronic devices in a CMOS-compatible process.
We investigated the system performance of variable slowlight buffers based on cascaded silica micro-resonator-rings. Continuous tunable buffering to wavelengths of choice is achieved, without losing any packets in an optical packet switching network.
Dipole and vector solitons in a two-dimensional photorefractive optical lattice are demonstrated both experimentally and theoretically. Dipole solitons can be in-phase or out-of-phase in their lobe components, and they are trapped in two nearby lattice sites and stabilized by the lattice-induced waveguide. Vector solitons are realized by mutual trapping of two mutually incoherent, beams in the same...
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