Abstract: The present invention provides a compact optical fiber amplifier, which can minimize the size of an optical module and increase the degree of freedom in mounting the module on a board. The compact optical fiber amplifier according to the present invention includes: an optical module including a plurality of optical elements provided therein, an input port for introducing an optical fiber thereinto, and an outlet port for extract the optical fiber to the outside of the module; and a plurality of optical fibers introduced into or extracted from the optical module through the input port or the outlet port of the optical module and disposed above a predetermined radius of curvature on the outside of the optical module.