Abstract
The photonic properties of Ti doped optical fiber were investigated for application of optical nonlinear devices and a fiber-type UV sensor based on its high third order optical nonlinearity and photoluminescence characteristics. The structure and defect states of Ti incorporated in silica glass network of the fiber core were examined by measurement of optical properties such as optical absorption, photoluminescence, Raman shift, and by transmission electron microscopy. The nonlinear refractive index, n2, of the fiber was measured to be 5.73 × 10-20 m2/W by continuous-wave self-phase modulation method, which was 2.5 times larger than that of the same optical fiber without Ti incorporation. The photoluminescence of the Ti doped optical fiber was found to appear over the range from 360 nm to 480 nm upon the Xenon-lamp illumination, and it was found to increase linearly with the increase of the lamp power.
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