Design and fabrication of wide-angle abrupt bends on lithium niobate

Author

Lu, Ruei-Chang ; Liao, Yu-Pin ; Lin, Han-Bin ; Wang, Way-Seen

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

2

Issue

2

fYear

1996

fDate

6/1/1996 12:00:00 AM

Firstpage

215

Lastpage

220

Abstract

A new wide-angle low-loss abrupt bend is presented. A prism-like region of index equal to that of the substrate is placed at the bend corner to compensate the phase mismatch caused by the bend. The novel abrupt bend has been fabricated on a LiNbO₃ substrate by proton exchange. The experimental result shows that the normalized transmitted power is 63% with a bend angle of 10°, which is quite close to the simulated result

Keywords

finite difference methods; integrated optics; ion exchange; lithium compounds; optical design techniques; optical fabrication; optical waveguide components; waveguide discontinuities; LiNbO₃; LiNbO₃ substrate; abrupt bend design; abrupt bend fabrication; bend angle; normalized transmitted power; phase mismatch compensation; prism-like region; proton exchange; semivectorial finite difference beam propagation method; wide-angle low-loss abrupt bend; Dielectric substrates; Fabrication; Finite difference methods; Lithium niobate; Optical losses; Optical materials; Optical refraction; Optical variables control; Optical waveguides; Protons;

fLanguage

English

Journal_Title

Selected Topics in Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

1077-260X

Type

jour

DOI

10.1109/2944.577364

Filename

577364