Novel optical single-mode asymmetric Y-branches for variable power splitting

Author

Lin, Han-Bin ; Su, Jung-Young ; Cheng, Rei-Shin ; Wang, Way-Seen

Author_Institution

Dept. of Electr. Eng., China Inst. of Technol. & Commerce, Taipei, Taiwan

Volume

35

Issue

7

fYear

1999

fDate

7/1/1999 12:00:00 AM

Firstpage

1092

Lastpage

1096

Abstract

Single-mode asymmetric Y-branches using microprisms are proposed. With a bend prism designed by the bend phase compensation rule (bend PCR) and a pair of Y-branch prisms designed by the Y-branch PCR, the phase front mismatch at the branching point is greatly eliminated, resulting in wide-angle low-loss 3-dB asymmetric Y-branches. Furthermore, control of power-splitting ratios is fulfilled through varying the lengths of prisms for a fixed branching angle and a fixed prism index. Finally, cascades of the proposed structures are studied. It is shown that the construction of a satisfactory 1×N tree power divider based on the cascaded structures is possible

Keywords

compensation; micro-optics; optical beam splitters; optical design techniques; optical prisms; optical waveguide theory; symmetry; 1×N tree power divider; Y-branch prisms design; bend phase compensation rule; bend prism design; branching point; cascaded structures; fixed branching angle; fixed prism index; ingle-mode asymmetric Y-branches; optical single-mode asymmetric Y-branches; phase front mismatch; power-splitting ratios; variable power splitting; wide-angle low-loss 3-dB asymmetric Y-branches; Councils; Geometrical optics; Optical coupling; Optical design; Optical devices; Optical propagation; Optical sensors; Optical waveguides; Power dividers; Structural beams;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.772181

Filename

772181