An amplification optical fiber with an optical component capable of efficiently absorbing pumping light and a fiber laser device including the same are provided.An amplification optical fiber with an optical component in a fiber laser device 1 includes: an amplification optical fiber 30 having a core 31 doped with an active element and a clad 32 through which pumping light for amplifying light to be amplified propagating through the core 31 propagates and an optical component 50 including at least one optical fiber 53a to 53f having a first end coupled to a portion of the clad 32 and a second end coupled to at least another portion of the clad 32 at one end 35 of the amplification optical fiber 30.
