Abstract
A tellurium-doped germanosilicate optical fiber was developed by modified chemical vapor deposition and solution doping techniques. Using the continuous-wave self-phase modulation method, the nonresonant nonlinear refractive index, , was measured to be , which is 2 to 3 times that of the undoped germanosilicate glass fiber. Polyhedron structures and with and are believed responsible for lower phonon energy, more nonbridging oxygens, and a larger hyperpolarization, leading to the observed higher nonresonant optical nonlinearity.
© 2009 Optical Society of America
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