  Dissipative Kerr solitons (DKSs) in the high-Q micro-resonator corresponds to
self-organized short pulse in time domain via double balance between dispersion
and Kerr nonlinearity, as well as cavity loss and parametric gain. In this
paper, we first experimentally demonstrate deterministic generation and
switching of DKSs in a thermally controlled micro-ring resonator based on
high-index doped silica glass platform. In our scheme, an auxiliary laser is
introduced to timely balance the intra-cavity heat fluctuation. By decreasing
the operating temperature through a thermo-electric cooler, soliton crystal is
firstly generated, then increasing the temperature, DKSs switching and single
soliton are robustly accessed, which is independent of the tuning speed. During
the switching process, varieties of DKSs are identified by tens of featured
discrete soliton-steps, which is favorable for study of on-chip soliton
interactions and nonlinear applications.
