TY - JOUR
AU1 - Herrero-Parareda, Albert
AU2 - Vitebskiy, Ilya
AU3 - Scheuer, Jacob
AU4 - Capolino, Filippo
AB - IntroductionThe confinement and slowing down of light in photonic structures has gained interest in the past two decades due to its growing feasibility and possible applications. Of particular interest is the excitation of the frozen mode regime,[1] where the wave transmitted inside a waveguide or in a supporting medium exhibits both vanishing group velocity and enhanced amplitude.[2] The frozen mode regime is associated with a stationary inflection point (SIP) of the Bloch dispersion relation ω(k), where ∂ω/∂k=0 and ∂2ω/∂k2=0 at k=ks, where ks is the SIP wavenumber. In this article, we focus on SIPs because of their diverse potential applications: loss‐induced transparency, unidirectional invisibility, lasing‐mode selection, lasing revivals and suppression, directional lasing, hypersensitive sensors, etc.[3] The SIP scenario is also interesting and attractive because the frozen mode regime can be observed over a wide frequency range, ranging from RF,[4,5] to optical frequencies.[6–8] Moreover, third‐order exceptional points of degeneracy (EPDs) have been found in a diverse range of structures: loss–gain balanced coupled‐mode structures, such as PT‐symmetric systems with glide symmetry.[9,10] SIPs are found in periodic lossless and gainless coupled mode structures,[6,11] periodic lossless and gainless gratings,[12] and photonic crystals.[2] Furthermore, SIPs have been found in nonreciprocal structures, as shown in 
TI - Frozen Mode in an Asymmetric Serpentine Optical Waveguide
JF - Advanced Photonics Research
DO - 10.1002/adpr.202100377
DA - 2022-09-01
UR - https://www.deepdyve.com/lp/wiley/frozen-mode-in-an-asymmetric-serpentine-optical-waveguide-SguuoQEiCf
VL - 3
IS - 9
DP - DeepDyve
ER -