Design and analysis of completely adiabatic tapered waveguides by conformal mapping

Autor:	Jui-Ming Hsu, Lih-Gen Sheu, Ping-Lin Fan, Ching-Ting Lee, Mount-Learn Wu
Rok vydání:	1997
Předmět:	Ideal (set theory) Series (mathematics) business.industry Circuit design Physics::Optics Conformal map Atomic and Molecular Physics and Optics law.invention Optics Beam propagation method law Physics::Accelerator Physics Adiabatic process business Waveguide Refractive index Mathematics
Zdroj:	Journal of Lightwave Technology. 15:403-410
ISSN:	0733-8724
DOI:	10.1109/50.554395
Popis:	In this study, we propose a novel equivalent-waveguide concept to design the completely adiabatic tapered waveguides. The optimal combination of taper shape and refractive-index distribution in such ideal structures is obtained by applying a series of conformal mappings to transform a single-mode straight waveguide into an equivalent tapered configuration. In an ideal taper the curved phase-front effect verifies the constant V-number concept is insufficient for designing a tapered waveguide. Also, the beam propagation method combined with the conformal mapping method is used to analyze the characteristics of light propagation in ideal structures. Simulation results predict that in the ideal taper a perfect mode-size conversion can be achieved adiabatically.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6a3e7cfea868e195bc63a2f1552a8c3e https://doi.org/10.1109/50.554395 Zobrazit plný text záznamu