TY - JOUR
T1 - Point-Defect-Localized Bound States in the Continuum in Photonic Crystals and Structured Fibers
AU - Vaidya, Sachin
AU - Benalcazar, Wladimir A.
AU - Cerjan, Alexander
AU - Rechtsman, Mikael C.
N1 - Publisher Copyright:
© 2021 American Physical Society.
PY - 2021/7/9
Y1 - 2021/7/9
N2 - We show that point defects in two-dimensional photonic crystals can support bound states in the continuum (BICs). The mechanism of confinement is a symmetry mismatch between the defect mode and the Bloch modes of the photonic crystal. These BICs occur in the absence of band gaps and therefore provide an alternative mechanism to confine light. Furthermore, we show that such BICs can propagate in a fiber geometry and exhibit arbitrarily small group velocity which could serve as a platform for enhancing nonlinear effects and light-matter interactions in structured fibers.
AB - We show that point defects in two-dimensional photonic crystals can support bound states in the continuum (BICs). The mechanism of confinement is a symmetry mismatch between the defect mode and the Bloch modes of the photonic crystal. These BICs occur in the absence of band gaps and therefore provide an alternative mechanism to confine light. Furthermore, we show that such BICs can propagate in a fiber geometry and exhibit arbitrarily small group velocity which could serve as a platform for enhancing nonlinear effects and light-matter interactions in structured fibers.
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U2 - 10.1103/PhysRevLett.127.023605
DO - 10.1103/PhysRevLett.127.023605
M3 - Article
C2 - 34296895
AN - SCOPUS:85110101578
SN - 0031-9007
VL - 127
JO - Physical review letters
JF - Physical review letters
IS - 2
M1 - 023605
ER -