Electrically tunable Bragg gratings in single-mode polymer optical fiber
Journal
Optics letters
Date Issued
February 1, 2007
DOI
10.1364/OL.32.000214
Abstract
We present what is to our knowledge the first demonstration of a tunable fiber Bragg grating device in polymer optical fiber that utilizes a thin-film resistive heater deposited on the surface of the fiber. The polymer fiber was coated via photochemical deposition of a Pd/Cu metallic layer with a procedure induced by vacuum-ultraviolet radiation at room temperature. The resulting device, when wavelength tuned via joule heating, underwent a wavelength shift of 2 nm for a moderate input power of 160 mW, a wavelength to input power coefficient of −13.4 pm/mW, and a time constant of 1.7 s−1.