We use an ultra-short pulse laser to pump photonic crystal fiber. Benefiting from nonlinear effects such as four-wave mixing and fiber dispersion, we successfully generate an optical communication band ultra-strong photon correlation light field, characterized by a central wavelength of 1550 nm, a spectral width of 5 nm, and a second-order correlation function $g^{(\mathrm{2})}(\mathrm{0})$ is up to 774.2±6.0. Through the analysis of the statistical distribution of photon numbers and the second-order correlation function $g^{(\mathrm{2})}(\mathrm{0})$ for coherent light field, thermal light field, and photon correlation field as functions of the average photon number, we find that the ultra-strong photon correlation light field in the optical communication band exhibits a wide photon number distribution range and a higher second-order correlation function. The results indicate that by adjusting the pump power of the ultra-short pulse laser, we can transition the photon statistical properties of the emitted light field among coherent light field, thermal light field, and photon-correlated light field. The ultra-strong photon correlation light field generated by this method provides a novel technical approach for advancing research in quantum precision measurement and quantum computing.