Please use this identifier to cite or link to this item:
http://hdl.handle.net/2117/2058
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| Title: | Guided-to-leaky mode transition in uniaxial optical slab waveguides |
| Authors: | Torner i Sabata, Lluís
Recolons i Martos, Jaume
Pérez Torres, Juan |
| Other authors: | Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció |
| Keywords: | Àrees temàtiques de la UPC::Enginyeria electrònica i telecomunicacions::Radiocomunicació i exploració electromagnètica::Teledetecció
Optical wave guides
Integrated optics
Wave guides
Tuning
integrated optics
optical losses
optical waveguide theory
tuning
LiNbO3
LiTaO3
birefringent materials
critical optical axis orientation
critical orientation
extraordinary cutoff
guided-to-leaky mode transition
guided-to-leaky transitions
leaky modes
ordinary cutoff
slab optical waveguides
totally guided hybrid modes
transcendental expressions
tuning
uniaxial crystals
uniaxial optical slab waveguides
waveguide axis
waveguide parameters
Guies d'ones òptiques
Òptica integrada
Guies d'ones
Afinació |
| Publisher: | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
| Abstract: | The guided-to-leaky hybrid mode transition in slab optical waveguides made on uniaxial crystals such as LiNbO3, or LiTaO 3, is analyzed. Two different guided-to-leaky transitions have been identified, namely the ordinary cutoff and the extraordinary cutoff, which occur when considering negative and positive birefringent materials, respectively. Analytical but transcendental expressions have been obtained, yielding the critical optical axis orientation, relative to the waveguide axis, above which the totally guided hybrid modes become leaky. The results indicate that the value of the critical orientation strongly depends on the waveguide parameters. The possibility of tuning this critical orientation to a desired value through the waveguide parameters is discussed.
Peer reviewed |
| Appears in Collections: | Documents de recerca
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