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14 papers · 1 filter
Parametric dependence of bound states in the continuum: a general theory
Amgad Abdrabou, Lijun Yuan, Wangtao Lu +1
Photonic structures with high- resonances are essential for many practical applications, and they can be relatively easily realized by modifying ideal structures with bound stat…
Real transmission and reflection zeros of periodic structures with a bound state in the continuum
Lijun Yuan, Mingyang Zhang, Ya Yan Lu
For lossless periodic structures with a proper symmetry, the transmission and reflection spectra often have peaks and dips that are truly and , respectively. The full…
Approximating transmission and reflection spectra near isolated nondegenerate resonances
Hongyao Wu, Lijun Yuan, Ya Yan Lu
A linear scattering problem for which incoming and outgoing waves are restricted to a finite number of radiation channels can be precisely described by a frequency-dependent scatte…
Resonant field enhancement in lossy periodic structures supporting complex bound states in the continuum
Ling Tan, Lijun Yuan, Ya Yan Lu
Resonant modes in a lossy periodic structure sandwiched between two lossless homogeneous media form bands that depend on the Bloch wavevector continuously and have a complex freque…
Parametric dependence of bound states in the continuum in periodic structures: vectorial cases
Lijun Yuan, Ya Yan Lu
A periodic structure sandwiched between two homogeneous media can support bound states in the continuum (BICs) that are valuable for many applications. It is known that generic BIC…
On the robustness of bound states in the continuum in waveguides with lateral leakage channels
Lijun Yuan, Ya Yan Lu
Bound states in the continuum (BICs) are trapped or guided modes with frequencies in radiation continua. They are associated with high-quality-factor resonances that give rise to s…