A novel low-loss wide-angle Y-branch with a diamond-like microprism

Author

Chang, Wen-Ching ; Lin, Han-Bin

Author_Institution

Dept. of Electr. Eng., Tamkang Univ., Tamsui, Taiwan

Volume

11

Issue

6

fYear

1999

fDate

6/1/1999 12:00:00 AM

Firstpage

683

Lastpage

685

Abstract

A novel structure of low-index diamond-like microprism on a single-mode symmetric Y-junction waveguide is proposed. Not only the phase-front mismatch can be compensated, but also the field mismatch can be ameliorated with the help of power presplitting effect. The optimal prism parameters are determined, and the results simulated by beam propagation method also demonstrate that the transmitted loss is only 0.6 dB even though the branching angle is up to 20/spl deg/. Moreover, this structure takes many advantages of the simple structure, easy design procedure, being fairly insensitive to fabrication errors, and flexible selection of prism-index.

Keywords

micro-optics; optical losses; optical prisms; optical waveguides; refractive index; 0.6 dB; beam propagation method; branching angle; diamond-like microprism; easy design procedure; fabrication errors; field mismatch; flexible selection; low-index diamond-like microprism; low-loss wide-angle Y-branch; optimal prism parameters; phase-front mismatch compensation; power presplitting effect; prism-index; simple structure; single-mode symmetric Y-junction waveguide; transmitted loss; Dielectrics; Finite wordlength effects; Integrated optics; Optical device fabrication; Optical losses; Optical refraction; Optical waveguides; Propagation losses; Waveguide junctions;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.766784

Filename

766784