Abstract

We demonstrate a tuning device for fiber Bragg gratings with a wavelength tuning range in excess of $65\text{\hspace{0.17em} nm}$. A purely axial tuning technique using a highly deformable polymer molded in a cylinder shape is used to embed a fiber Bragg grating and to achieve a wavelength tuning range from 1551.7 to $1485.5\text{\hspace{0.17em} nm}$. The tuning curve is highly linear with a tuning rate of $9.6\text{\hspace{0.17em} nm}$ for every percent of applied strain. The insertion losses of the device, the variations of the full width at half maximum, and the stability of the Bragg wavelength over a working day have been studied and shown to be less than $0.02\text{\hspace{0.17em} dB}$, 0.14, and $0.2\text{\hspace{0.17em} nm}$, respectively.

© 2008 Optical Society of America

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