Influence of temperature and initial titanium dimensions of fiber-Ti:LiNbO3waveguide insertion loss at λ = 1.3 µm

Author

McCaughan, Leon ; Murphy, Edmond J.

Author_Institution

Department of Electrical and Computer Engineering, Univ. of Wisconsin, MAdison, WI, USA

Volume

19

Issue

2

fYear

1983

fDate

2/1/1983 12:00:00 AM

Firstpage

131

Lastpage

136

Abstract

This paper describes the influence of fabrication parameters on fiber-Ti:LiNbO3waveguide-fiber insertion loss measured at $\\lambda = 1.32 \\mu$ m in $c$ -cut LiNbO3. We present a systematic study of the influence of titanium thickness on insertion loss. Within the range examined, diffusion of 950 Å thick 6 μm wide strip of Ti at 1050°C for 6 h produced the minimum loss of 2.0 dB in a 2 cm long waveguide for both TE and TM modes. An analysis of fiber-waveguide coupling for the particular case of an asymmetric diffused waveguide is presented. In general, we find that coupling loss due to modal mismatch between the fiber and waveguide and propagation loss in the waveguide contribute approximately equally to total insertion loss.

Keywords

Infrared propagation, absorbing media; Lithium materials/devices; Optical fiber coupling; Optical fiber losses; Optical strip waveguide couplers; Insertion loss; Loss measurement; Optical device fabrication; Optical fiber devices; Optical fiber polarization; Propagation losses; Strips; Tellurium; Temperature; Titanium;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.1983.1071822

Filename

1071822