The guided and leaky mode propagation in a multilayered c-rotated anisotropic waveguide having an equatorial dielectric tensor configuration is examined. In particular, the electromagnetic behavior of titanium diffused lithium niobate (Ti:LiNbO3) and proton exchanged lithium niobate (PE:LiNbO3) waveguides is compared. The dependence of modal characteristics on the equatorial angle (gamma) is shown and the effects of different metal layers are investigated. The transition from leaky to guided modes occurs only for the PE:LiNbO3 waveguide while the modes do not change their nature for the Ti:LiNbO3 waveguide. The number of guided modes, for the PE:LiNbO3 waveguide, increases by increasing the angle (gamma) . The first guided mode, having the real part of the refractive effective index nr equals 2.2701, appears at (gamma) equals 25 degree(s), while, for (gamma) > 73 degree(s) nine different guided modes exist.
Migration Of Guided and Leaky Modes in Rotated Optical Axis Birefringent Waveguides / D'Orazio, Antonella; De Sario, Marco; Ficarella, G.; Marchese, Diego; Petruzzelli, Vincenzo; Prudenzano, Francesco. - STAMPA. - 2449:(1995), pp. 311-320. (Intervento presentato al convegno Conference on Fiber Optic Network Components tenutosi a Amsterdam nel March 20-23, 1995) [10.1117/12.201984].
Migration Of Guided and Leaky Modes in Rotated Optical Axis Birefringent Waveguides
Antonella D'Orazio;Marco De Sario;Vincenzo Petruzzelli;Francesco Prudenzano
1995-01-01
Abstract
The guided and leaky mode propagation in a multilayered c-rotated anisotropic waveguide having an equatorial dielectric tensor configuration is examined. In particular, the electromagnetic behavior of titanium diffused lithium niobate (Ti:LiNbO3) and proton exchanged lithium niobate (PE:LiNbO3) waveguides is compared. The dependence of modal characteristics on the equatorial angle (gamma) is shown and the effects of different metal layers are investigated. The transition from leaky to guided modes occurs only for the PE:LiNbO3 waveguide while the modes do not change their nature for the Ti:LiNbO3 waveguide. The number of guided modes, for the PE:LiNbO3 waveguide, increases by increasing the angle (gamma) . The first guided mode, having the real part of the refractive effective index nr equals 2.2701, appears at (gamma) equals 25 degree(s), while, for (gamma) > 73 degree(s) nine different guided modes exist.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
