A tapered microfiber decorated with titanium dioxide-silicon dioxide nanocomposite saturable absorber (TiO 2 -SiO 2 -SA) is demonstrated via alkali fusion method and spincoating technique. The TiO 2 -SiO 2 -SA exhibited 17.1% modulation depth, 31.7 µJ/cm 2 saturation fluence and 35.4% non-saturable loss. The TiO 2 -SiO 2 -SA was able to generate a pulse duration of 797 fs at a repetition rate of 10.39 MHz and an average output power of 16.57 mW at 1.56 µm. This work presents an enhanced pulse duration within titanium-based saturable absorbers. The high damage threshold of beyond 24.82 GW/cm 2 and excellent stability are believed to have opened a new route of using nanomaterials derived from waste product for next generation ultrafast photonic applications.

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