Abstract
Silica-based Yb<sup>3+</sup>-doped glass is prepared by non-chemical vapor deposition. The drawn
photonic crystal fiber (PCF) has a strong absorption at 976 nm and emission wavelength of
approximately 1 037 nm. The intensity and spectral lineshape of the near infrared (NIR) luminescence
of the Yb<sup>3+</sup>-doped PCF are recorded and discussed in terms of excitation power, excitation
wavelength, fiber length, and Yb<sup>3+</sup> ion concentration. The emission intensifies as the excitation
power and Yb<sup>3+</sup> ion concentration increase. The intensity of the shorter wavelength side of the
luminescence spectrum decreases as the length of the PCF increases.
© 2013 Chinese Optics Letters
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