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The 1.3-micrometer spectral region is of critical importance to optical communications, distinguished by the zero-chromatic dispersion and low-loss characteristics of standard silica fibers. As the transmission capacities of the conventional C- and L-bands approach their operational limits, the 1.3-micrometer window presents a vital avenue for extending the bandwidth of next-generation networks. This work details the development of a 1.3-micrometer fiber laser designed to complement existing high-speed communication sources. The laser utilizes a Praseodymium-doped fluoride fiber (PDFF) as the gain medium. The laser consists of a 1200/1310 nm wavelength division multiplexer (WDM), an optical isolator, and an output coupler to form the ring cavity. Through the excitation of Pr$^{3+}$ ions via the 1200 nm pump, stable laser emission was successfully generated at a center wavelength of 1.3 micrometers. These results demonstrate the viability of the 1.3-micrometer laser system as a coherent source for exploiting the zero-dispersion region in optical communication systems.