Propagation properties in short lengths of rectangular epoxy waveguides

Author

Olsen, C. Michael ; Trewhella, J.M. ; Fan, B. ; Oprysko, Modest M.

Author_Institution

IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA

Volume

4

Issue

2

fYear

1992

Firstpage

145

Lastpage

148

Abstract

The propagation loss and beam spreading in large-core epoxy ridge waveguides on a glass substrate at wavelengths ranging from 630 to 1550 nm have been measured. At the intermediate wavelengths, a loss floor of 1.2 dB/cm is observed which is caused by inclusions and wall imperfections. The theoretical and experimentally determined equilibrium numerical aperture is 0.65 and 0.29 and the modal dispersion is 5.1 and 1.0 ps/cm, respectively. The discrepancy is due to strong scattering. The scattering does not give rise to any noticeable mode mixing. The epoxy waveguides also provide a rapid filling of the modes which is attractive for modal noise suppression.<>

Keywords

integrated optics; light scattering; optical dispersion; optical losses; optical waveguides; rectangular waveguides; 630 to 1550 nm; IR; beam spreading; equilibrium numerical aperture; glass substrate; inclusions; large-core epoxy ridge waveguides; loss floor; modal dispersion; modal noise suppression; planar waveguides; propagation loss; rapid modes filling; rectangular epoxy waveguides; short lengths; strong scattering; wall imperfections; Loss measurement; Nonlinear optics; Optical fiber polarization; Optical losses; Optical polymers; Optical scattering; Optical waveguides; Rayleigh scattering; Rectangular waveguides; Wavelength measurement;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.122343

Filename

122343