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We present the experimental observation of type-II optical Weyl points and corresponding Fermi arcs in a three-dimensional photonic structure. We employ a system composed of an array of staggered helical waveguides fabricated using the direct laser writing technique. Weyl points are established by observing conical diffraction and Fermi arcs are demonstrated by showing surface confinement (and deconfinement)...
We propose a novel cost efficient node architecture for a wavelength division multiplexed packet-switched network based on reflective integrated device. We demonstrate a 16-channel, silicon-on-insulator, reflective monolithic integrated slot-blocker that integrates one arrayed waveguide grating, 16 variable optical attenuators, 16 Bragg grating mirrors and one vertical fiber coupler. Small-form factor...
In this talk, we will review recent advances in the semiconductor photonic components, photonic integrated circuits and the integration methodologies implemented on the traditional compound semiconductor as well as the emerging silicon-based platform.
This paper presents the holographic fabrication of three-dimensional photonic crystal templates by forming a five beam interference pattern using a top-cut prism. The interconnecting of the multi-layer structures was controlled by phase-tuning one interfering beam.
This paper presents the fabrication of waveguides in lithium-tantalate using a 250-kHz repetition-rate ultrafast laser. Micro-Raman and second-harmonic microscopy studies indicate the preservation of optical nonlinearity in guiding regions formed by the laser-induced lattice compression.
In this paper, we report a new design and fabrication of an integrated two-layer phase mask for five-beam holographic fabrication of three-dimensional photonic crystal templates.
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