Dispersion Engineering of Waveguide Microresonators by the Design of Atomic Layer Deposition
Photonics, 2023 In this work, we demonstrate dispersion engineering of silicon nitride waveguide resonators with atomic layer deposition (ALD). We conducted theoretical and experimental analyses on the waveguide dispersion with air cladding, hafnium oxide (HfO2 ...
Pei-Hsun Wang, Nien-Lin Hou, Kung-Lin Ho
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Dispersion Engineering of Silicon Nitride Microresonators via Reconstructable SU-8 Polymer Cladding
Micromachines, 2022 In this work, we propose a novel way to flexibly engineer the waveguide dispersion by patterning the cladding of waveguide microresonators. Experimentally, we demonstrate silicon nitride waveguides with air-, oxide-, and SU-8 polymer-cladding layers and ...
Shang-Pu Wang +3 more
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Meikuang Anquan, 2020 Dispersion curves of Rayleigh channel waves may have “cross” between the fundamental and first higher order modes either in the phase velocities or in group velocities in the low frequency band.
HE Daxi, ZHU Peimin, SHEN Suishui, CAI Wei, WANG Wengang
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Dispersion of nonlinear group velocity determines shortest envelope solitons [PDF]
, 2011 We demonstrate that a generalized nonlinear Schrödinger equation (NSE), that includes dispersion of the intensity-dependent group velocity, allows for exact solitary solutions.
Bandelow, Uwe +6 more
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Flatband Slow Wave in Novel Air-Hole-Array Strip Waveguides
IEEE Photonics Journal, 2009 We design two novel air-hole-array strip waveguides: one with elliptic air holes and the other with sandglass-shaped ones. Simulation results prove that flatband modes with low group velocity and low dispersion can be obtained.
Lei Dai, Fanghua Wang, Chun Jiang
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Modulational instability of discrete solitons in coupled waveguides with group velocity dispersion [PDF]
, 2006 We study temporal modulational instability of spatial discrete solitons in waveguide arrays with group velocity dispersion (GVD). For normal GVD we report existence of the strong 'neck'-type instability specific for the discrete solitons.
Vladimirov, Andrei G. +4 more
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Period-Timing Bifurcations in a Dispersion-Managed Fiber Laser With Zero Group Velocity Dispersion
IEEE Photonics Journal, 2016 We report on the numerical results of period timing bifurcations in a dispersion-managed (DM) fiber laser with zero group velocity dispersion (GVD).The fiber laser is passively mode-locked by using the nonlinear polarization rotation technique.
Qian Zhang +3 more
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High coupling efficiency to a low dispersion slow light-supporting photonic crystal waveguide [PDF]
Journal of the European Optical Society-Rapid Publications, 2013 In this paper, we design a waveguide on photonic crystal slab for propagation of low-dispersion slow light. By shifting the air holes adjacent to the waveguide, we obtain a photonic crystal waveguide with a group index of 25 in 25 nm bandwidth which ...
Moghaddam M. Khatibi +2 more
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Realizing normal group-velocity dispersion in free space via angular dispersion [PDF]
Optics Letters, 2021 It has long been thought that normal group-velocity dispersion (GVD) cannot be produced in free space via angular dispersion. Indeed, conventional diffractive or dispersive components such as gratings or prisms produce only anomalous GVD. We identify the conditions that must be fulfilled by the angular dispersion introduced into a plane-wave pulse to ...
Layton A. Hall, Ayman F. Abouraddy
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Group velocity dispersion curves estimation based on joint processing of sound pressure and vertical particle velocity [PDF]
JASA Express LettersIt is difficult to separate and estimate the intersected group velocity dispersion curves for different normal modes when the frequency is lower than the cutoff frequency of water column.
Guangxue Zheng +3 more
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