Abstract

A technique is described that allows accurate measurement of input prism coupling efficiencies in single-mode channel waveguides. Coupling efficiencies of <1% were measured. Scattering and absorption losses were also measured in single-mode channel waveguides and in planar diffused waveguides. All measurements were made in Ti-in-diffused LiNbO₃ waveguides. The channel widths before diffusion were 3 μm. Losses for channel waveguides range from 1.34 to 1.66 dB/cm and were measured for both TE and TM modes.

© 1980 Optical Society of America

Optical waveguide channel branches in Ti-diffused LiNbO₃

W. K. Burns, R. P. Moeller, C. H. Bulmer, and H. Yajima
Appl. Opt. 19(17) 2890-2896 (1980)

Optical properties of titanium-diffused LiNbO₃ strip waveguides and their coupling-to-a-fiber characteristics

Masaharu Fukuma and Juichi Noda
Appl. Opt. 19(4) 591-597 (1980)

Edge coupling of a GaAlAs DH laser diode to a planar Ti:LiNbO₃ waveguide

D. G. Hall, J. D. Spear-Zino, H. G. Koenig, R. R. Rice, J. K. Powers, G. H. Burkhart, and P. D. Bear
Appl. Opt. 19(11) 1847-1852 (1980)

Absorption loss and photorefractive-index changes in Ti:LiNbO₃ crystals and waveguides

A. M. Glass, I. P. Kaminow, A. A. Ballman, and D. H. Olson
Appl. Opt. 19(2) 276-281 (1980)

High efficiency input–output prism waveguide coupler: an analysis

Dror Sarid
Appl. Opt. 18(17) 2921-2926 (1979)