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In this study, we present the experimental performance of a dissipative soliton mode-locked fiber laser utilizing a liquid-phase Bi2Te3 topological insulator as a saturable absorber. The Bi2Te3-based saturable absorber, synthesized via a solution-processable method, exhibits strong nonlinear optical properties, enabling stable passive mode-locking in a ytterbium-doped fiber laser with a ring cavity configuration. Our results highlight the viability of liquid-phase topological insulators as versatile and high-performance saturable absorbers for ultrafast photonics. Moreover, this work extends the application potential of Bi2Te3 beyond traditional solid-state implementations, demonstrating its adaptability in fiber laser systems for dissipative soliton generation. These findings affirm the promise of topological insulator-based materials in advancing compact, high-energy pulsed laser sources for applications in optical communications, materials processing, and nonlinear optics.