Planar silica-glass optical waveguides with thermally induced lateral mode confinement

Autor:	H. J. Lee, Weyl-Kuo Wang, P.J. Anthony
Rok vydání:	1996
Předmět:	Materials science Silicon business.industry Physics::Optics chemistry.chemical_element Cladding (fiber optics) Waveguide (optics) Atomic and Molecular Physics and Optics Planar Optics chemistry Slab Optoelectronics Radiation mode business Refractive index Leakage (electronics)
Zdroj:	Journal of Lightwave Technology. 14:429-436
ISSN:	0733-8724
Popis:	A new type of planar silica-glass optical waveguide is proposed utilizing the thermo-optic effect of glass. The vertical mode-field confinement is defined by the core slab sandwiched between the upper and lower claddings while the lateral confinement is achieved due to localized increase of refractive index induced by the thin-film heater placed on the upper cladding. An analytical expression of the steady-state temperature distribution across the waveguide cross-section is derived and the induced mode-field characteristics are analyzed by solving the vector-wave equation using the mode-matching method. Mode propagation losses due to the metallic heater and the leakage into the silicon substrate are both calculated. The bending loss of this thermally induced waveguide is also analyzed for future device implementation using this waveguide.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4f04ad4a044e41b4a0b547607e9bb428 https://doi.org/10.1109/50.485604 Zobrazit plný text záznamu