Multi-mode - optical fiber, to a process for their preparation and measurement, as well as a laser diode module with such a multi-mode - optical fiber

摘要

To increase the coupling efficiency of mult imod strength than a millisecond in the fiber core (210) of a multi-mode - optical fiber (200) and suppression of a feedback by back reflections at the end face of the fiber core (210), via which the light of the laser diode in the fiber core (210) is coupled, the end face with at least three pairs of planar wedge surfaces (211a, 211b, 212a, 212b, 213a, 213b), which are arranged in pairs on opposite sides of a fiber axes plane are arranged and wherein each pair of foreign wedge surfaces (211a, 212a, 213a; 211b, 212b, 213b) starting from the fiber axis (214) with an increasing angle of inclination with respect to a to the axis of the fiber (214) vertical auxiliary plane to the edge of the fiber core (210) connected to each other towards.