Journal
OPTICS EXPRESS
Volume 24, Issue 2, Pages 1062-1071Publisher
Optica Publishing Group
DOI: 10.1364/OE.24.001062
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Funding
- National Science Foundation [CMMI-1360664]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1360664] Funding Source: National Science Foundation
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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 x 10(-4) at the wavelength of 1550 nm. By adding the desired numbers of stressed rods, an in-fiber quarter waveplate was fabricated with a insertion loss of 0.19 dB. The stress-induced birefringence was further explored to fabricate in-fiber polarizers based on the polarization-dependent long-period fiber grating (LPFG) structure. A polarization extinction ratio of more than 20 dB was observed at the resonant wavelength of 1523.9 nm. The in-fiber polarization devices may be useful in optical communications and fiber optic sensing applications. (C) 2016 Optical Society of America
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