title: Direct measurement of birefringence in ion-exchanged planar waveguides.
abstract: 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.
authors.forename: E
authors.initials: E
authors.lastname: Fazio
authors.forename: W A
authors.initials: WA
authors.lastname: Ramadan
authors.forename: M
authors.initials: M
authors.lastname: Bertolotti
authors.forename: G C
authors.initials: GC
authors.lastname: Righini