Stress-induced birefringence and fabrication of in-fiber polarization devices by controlled femtosecond laser irradiations.

Abstract

Optical birefringence was created in a single-mode fiber by introducing a series of symmetric cuboid stress rods on both sides of the fiber core along the fiber axis using a femtosecond laser. The stress-induced birefringence was estimated to be 2.4 × 10(-4) at the wavelength of 1550 nm. By adding the desired numbers of stressed rods, an in-fiber quarter… (More)
DOI: 10.1364/OE.24.001062

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