Title :
High resolution spatial interferometry of guided optical waves
Author :
Stolte, R. ; Ulrich, R.
Author_Institution :
Tech. Univ. Hamburg-Harburg, Germany
fDate :
4/25/1996 12:00:00 AM
Abstract :
The spatial variation of the phase difference Φ(z) between collinear guided waves is measured interferometrically by scanning a localised perturbation along the guide. Milliradian phase resolution is achieved by the use of a quadrature signal. The method is demonstrated with TE⇔TM coupling in Ti:LiNbO3. It yields the absolute value and the uniformity of the birefringence Δβ(z)=dΦ/dz
Keywords :
birefringence; light interferometry; lithium compounds; optical planar waveguides; titanium; LiNbO3:Ti; TE⇔TM coupling; birefringence; collinear guided waves; guided optical waves; integrated-optical components; localised perturbation; milliradian phase resolution; phase difference; quadrature signal; spatial interferometry;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19960563
