An improved single-mode Y-branch design for cascaded 1:2 splitters

Author

Klekamp, A. ; Kersten, P. ; Rehm, W.

Author_Institution

Telekom Res. Centre, Alcatel SEL, Stuttgart, Germany

Volume

14

Issue

12

fYear

1996

fDate

12/1/1996 12:00:00 AM

Firstpage

2684

Lastpage

2686

Abstract

The power splitting ratio of Y-branches based on step index waveguides has been calculated using three-dimensional (3-D) finite-difference beam propagation method (FD-BPM). Due to interference of the guided mode with quasiguided modes generated at distortions of the waveguide the splitting ratio depends on the wavelength and design parameters of the Y-branch. The simulations show how variations of the splitting ratio can be minimized using a mode-filter in the input section without significant increase of losses or component size

Keywords

finite difference methods; light interference; optical design techniques; optical elements; optical losses; optical waveguide filters; optical waveguide theory; refractive index; simulation; 3D finite-difference beam propagation method; cascaded 1:2 splitters; component size; design parameters; guided mode interference; input section; mode-filter; power splitting ratio; quasiguided modes; simulations; single-mode Y-branch design; splitting ratio; step index waveguides; waveguide distortions; Finite difference methods; Interference; Optical devices; Optical distortion; Optical fiber devices; Optical fiber polarization; Optical interferometry; Optical losses; Optical waveguides; Power generation;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.545787

Filename

545787