Direct measurement of birefringence in ion-exchanged planar waveguides.
A direct measurement of the birefringence of a planar waveguide obtained by Na(+) -K(+) ion exchange was performed with a double Lloyd interferometer. The results are compared with those obtained by a roundrobin test involving the same sample. Birefringence of as much as Deltan = (2.0 +/- 0.2) x 10(-3) was measured.
Fazio
E
E
Ramadan
W A
WA
Bertolotti
M
M
Righini
G C
GC