A research team led by Wang Anting at the University of Science and Technology of China (USTC) has achieved a remarkable breakthrough in the realm of fiber lasers. They have devised a high-order mode switchable fiber laser, leveraging a tilted multimode fiber Bragg grating, and successfully demonstrated the switchable emission of over ten distinct high-order modes. This pioneering work was published on July 6 in the esteemed optics journal ACS Photonics, under the title "Switchable high-order transverse mode fiber laser with over ten distinct modes." By ingeniously employing a tilted multimode fiber Bragg grating as the central mode conversion component, the USTC team significantly bolstered the coupling efficiency between the fundamental mode and high-order modes, transcending the constraints of conventional technologies. Experimental results confirm that the laser can efficiently excite various linear polarization (LP) modes and orbital angular momentum (OAM) modes, facilitating rapid and reliable mode switching. This technological advancement signifies a pivotal step toward the practical deployment and industrialization of high-order mode fiber lasers, promising to unlock new horizons in optical communication, sensing, and beyond.