title: Optically addressed variable-efficiency waveguide grating for switching arrays.
abstract: An optically addressed waveguide grating switch is described and demonstrated. Its structure includes a planar slab waveguide with a surface relief grating and an active-material cladding layer. Photoinduced birefringence due to a polarized argon laser beam causes modulation of the refractive index of the cladding in the grating region and modulation of diffraction efficiency of the waveguide grating.
authors.affiliation: Physical Optics Corporation, 20600 Gramercy Place, Torrance, California 90501, USA.
authors.forename: E M
authors.initials: EM
authors.lastname: Strzelecki
authors.forename: J
authors.initials: J
authors.lastname: Chen
authors.forename: F
authors.initials: F
authors.lastname: Lin