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Conference Paper
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We introduce a new approach to the characterization of optical waveguides written in transparent materials using ultrashort pulses. When applied to Silicon, our method shows that the waveguides are W-shaped.
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In this paper we consider the two-dimensional Schr\"odinger operator with an attractive potential which is a multiple of the characteristic function of an unbounded strip-shaped region, whose thickness is varying and is determined by the function $\mathbb{R}\ni x \mapsto d+\varepsilon f(x)$, where $d > 0$ is a constant, $\varepsilon > 0$ is a small...
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The bound state in the continuum (BIC) in photonic system has been widely used in the field of lasing and sensing. We here find the controllable BIC in an artificial giant atom-dressed one-dimensional photonic waveguide. The giant atom couples to the waveguide via two distant sites. We find that the energy and the photonic distribution in the BIC c...