Modeling and experimental investigations of Fano resonances in free-standing LiNbO_3 photonic crystal slabs

Deng, Jiaojiao; Hussain, Sajid; Kumar, Vikas; Jia, Wei; Png, Ching Eng; Thor, Lim Soon; Bettiol, Andrew A.; Danner, Aaron J.

doi:10.1364/oe.21.003243

Cited by 18 publications

(8 citation statements)

References 26 publications

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“…More recently, a L3 microcavity in Lithium Niobate membrane has been reported [22], it offers a remarkable opportunity for the realization of phoxonic devices. Finally, J. Dung et al measured the optical transmission based on Fano resonances [23] in LiNbO3 photonic slabs. Because the refractive indices of LiNbO3 are significantly smaller than the refractive index of silicon (about 2.2 as compared to about 3.5), the occurrence of phoxonic bandgaps in LiNbO3 is still an open question.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous bandgaps in LiNbO3 phoxonic crystal slab

Rolland¹,

Dupont²,

Gazalet³

et al. 2014

Opt. Express

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We study simultaneous photonic and phononic crystal slabs created in Z-cut lithium niobate membranes. Bandgaps for guided waves are identified using the three-dimensional finite element method (FEM). Three lattices are considered: the square, the hexagonal, and the honeycomb lattices. We investigate the evolution of band gaps as a function of geometrical parameters such as hole radius and membrane thickness. We show the existence of dual photonic and phononic bandgaps in the triangular lattice for suitable geometrical parameters and specific modal symmetries for both the elastic and the electromagnetic fields.

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Section: Introductionmentioning

confidence: 99%

Simultaneous bandgaps in LiNbO3 phoxonic crystal slab

Rolland¹,

Dupont²,

Gazalet³

et al. 2014

Opt. Express

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“…2(e) and the resonant wavelength is located at 1576 nm. The resonance presents an average spectral slope of 4.96 dB / nm , showing better spectral performances than the 2SBM 39 , as it is a lower frequency mode in addition to be the highest ever reported on LN-PCS 40,47–49 .…”

Section: Fabrication and Optical Characterizationmentioning

confidence: 89%

“…However, concerning the integration onto the fiber tip, the fiber may alter the SBMs. Furthermore, the rigidity of the LN slab and the impossibility to apply batch processes for the PhC fabrication 40 leads to restrictions on the PCS size and flexibility, in contrast with Si or polymer based structures 41–43 , which strongly impacts on the integration tolerances.…”

Section: Design and Simulationsmentioning

confidence: 99%

An ultra wideband-high spatial resolution-compact electric field sensor based on Lab-on-Fiber technology

Calero

Suárez

Salut

et al. 2019

Sci Rep

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Non-intrusive, wide bandwidth and spatial resolution are terms often heard in electric field sensing. Despite of the fact that conventional electromagnetic field probes (EMF) can exhibit notable functional performances, they fail in terms of perturbation of the E-field due to their loaded metallic structure. In addition, even though electro-optical technology offers an alternative, it requires large interaction lenghts which severely limit the sensing performances in terms of bandwidth and spatial resolution. Here, we focus on miniaturizing the interaction volume, photon lifetime and device footprint by taking advantage of the combination of lithium niobate (LN), Lab-on-Fiber technologies and photonic crystals (PhC). We demonstrate the operation of an all-dielectric E-field sensor whose ultra-compact footprint is inscribed in a 125 μm-diameter circle with an interaction area smaller than 19 μm × 19 μm and light propagation length of 700 nm. This submicrometer length provides outstanding bandwidth flatness, in addition to be promising for frequency detection beyond the THz. Moreover, the minituarization also provides unique features such as spatial resolution under 10 μm and minimal perturbation to the E-field, accompanied by great linearity with respect to the E-field strength. All these specifications, summarized to the high versatibility of Lab-on-Fiber technology, lead to a revolutionary and novel fibered E-field sensor which can be adapted to a broad range of applications in the fields of telecommunications, health and military.

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“…Their line shape is asymmetric, revealing a characteristic of Fano resonance [24][25][26]. More importantly, the frequencies of the reflectance peaks are overlapped well with those of some Γ-point modes.…”

mentioning

confidence: 95%

Vertical beaming of incoherent quantum emitters via the near-field coupling of Fano resonance

et al. 2018

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We report highly collimated radiation from incoherent quantum emitters coupled to photonic dispersion-engineered structures. Two-dimensional free-standing photonic crystal slabs sustained an extremely high density of states for vertically leaky light at discrete frequencies, which results from the constructive interference between directly reflected light and quasi-bound guided modes, referred to as Fano resonance. Electromagnetic simulations showed that an electric dipole that is excited near a photonic crystal slab generates vertically directional radiation at every Fano resonance frequency. The radiation distribution of an electric dipole is strongly correlated with the angular reflectance of a coupled photonic crystal slab. The strategy developed herein will be useful to achieve a vertical beam from quantum emitters such as transition metal dichalcogenide monolayers, facilitating the delivery of light into other external optics.

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Modeling and experimental investigations of Fano resonances in free-standing LiNbO_3 photonic crystal slabs

Cited by 18 publications

References 26 publications

Simultaneous bandgaps in LiNbO3 phoxonic crystal slab

Simultaneous bandgaps in LiNbO3 phoxonic crystal slab

An ultra wideband-high spatial resolution-compact electric field sensor based on Lab-on-Fiber technology

Vertical beaming of incoherent quantum emitters via the near-field coupling of Fano resonance

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