Photo-optical switching devices by amorphous As2S3 waveguides

1 April 1981

journal article
research article
Published by AIP Publishing in Applied Physics Letters

Vol. 38 (7) , 481-483
https://doi.org/10.1063/1.92425

Abstract

A novel optical device based on a ’’dynamical refractive‐index change’’ in an amorphous As₂S₃ film is constructed. In this device coupling of a red light beam into the thin‐film waveguide with a prism coupler is controlled by illuminating blue light. A switching time of about 10 s and an on/off ratio as high as 6/1 have been achieved. Further, this device can be operated as a photo‐optical switch having a storage function by changing the intensity of the light beams.

Keywords

WAVEGUIDES
SWITCHING
RADIATION EFFECTS
ARSENIC SULFIDES
AMORPHOUS STATE
OPTICAL EQUIPMENT
VISIBLE RADIATION
REFRACTIVITY
FABRICATION
PRISMS
COUPLING
CONTROL
AS2S3

This publication has 2 references indexed in Scilit:

Photo-induced dynamical changes in amorphous As2S3 films
Solid State Communications, 1980
High efficiency input–output prism waveguide coupler: an analysis
Applied Optics, 1979