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A hollow optical waveguide is proposed in which light can be confined in an air gap between a distributed Bragg reflecting (DBR) mirror and a high-index-contrast grating (HCG) mirror. Because of the combined effect of vertical (DBR) and lateral (HCG) periodicity, the proposed hollow waveguide shows a small modal birefringence on the order of 10-4 . In addition, a patterned HCG is shown to provide...
A novel design-flexible 3D-hollow-waveguide with lateral- and vertical-periodicity has been demonstrated. A high-index-contrast-grating-(HCG), introduced as a lateral-periodicity, provides vertical as well as lateral-optical-confinement. The combined effect of vertical and lateral periodicity results in a low-polarization-dependence.
A tunable hollow waveguide with distributed Bragg reflector (DBR) mirror and a high-index-contrast-grating (HCG) mirror has been proposed. We numerically show the possibility of 2D-confinement and reduction in polarization-dependence of the proposed hollow waveguide.
An adjustable polarization mode dispersion compensator with a variable tapered-3D-hollow-waveguide Bragg-reflector has been demonstrated exhibiting a giant-birefringence of 0.01 and a 13-psec tuning in differential-group-delay for a 3-mm-long compact device.
A tapered-3D-hollow-waveguide Bragg-reflector has been proposed exhibiting a giant-birefringence of 0.01 and an 8.5-psec tuning in differential-group-delay for 3-mm-long compact devices, which can be used for adjustable compensation of polarization-mode-dispersion in optical-fiber-links.
A high-contrast-grating (HCG) based hollow-waveguide has been proposed. Preliminary results based on full-vector-simulation have been presented, exhibiting the optical-confinement, propagation-loss and polarization-characteristics of HCG-based-hollow waveguide. An HCG-mirror can reduce temperature and polarization sensitivities of hollow-waveguides.
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