Optical solitons and supercontinuum generation in a tellurite microstructured optical fiber

We demonstrate soliton self-frequency shift (SSFS), multiple optical solitons and supercontinuum (SC) generation in a tellurite microstructured optical fiber (TMOF). By using an optical parametric oscillator (OPO) with the pulse of similar to 80 MHz and similar to 200 fs as the pump source, the evolution of SSFS is investigated at the pump wavelengths of similar to 1730, 1750, 1810 and 1900 nm with the fiber length of similar to 20 cm. At the pump wavelength of similar to 1730 nm, SSFS with the soliton center wavelength from similar to 1850 to 1995 nm is observed. Increasing the pump wavelength to similar to 1920 nm and the fiber length to similar to 100 cm, stable multiple optical solitons and dispersive waves (DWs) are obtained. Changing the pump source to a SC source which is generated in a single mode fiber (SMF) pumped by a nanosecond laser with the wavelength of similar to 1550 nm, a broadband SC spectrum from similar to 580 to 2796 nm is obtained at the pump power of similar to 202 mW. To the best of our knowledge, this is the first demonstration of SC generation in the TMOF by using SC light generated by a nanosecond laser. (C) 2016 Elsevier B.V. All rights reserved.