A novel poling method, carbon dioxide laser-assisted poling (CLAP), is demonstrated. Localized heating during CLAP is achieved through silicate absorption of the CO><sub>2</sub> laser radiation. Electro-optic coefficients of 0.2 pm/V are achieved within a 55-s scan of a twin-hole fiber. It is shown that there is a range of CO><sub>2</sub> laser powers for which the residual electro-optic coefficient is maximized.
© 2000 Optical Society of America
(060.2400) Fiber optics and optical communications : Fiber properties
(140.3390) Lasers and laser optics : Laser materials processing
(160.2100) Materials : Electro-optical materials
(190.4370) Nonlinear optics : Nonlinear optics, fibers
Paul Blazkiewicz, Wei Xu, Danny Wong, John Canning, Mattias Åsland, and Graham Town, "Carbon dioxide laser-assisted poling of silicate-based optical fibers," Opt. Lett. 25, 200-202 (2000)