The present invention relates to an 8-type optical fiber pulse laser using an asymmetric nonlinear fiber mirror. In the prior art, an EDF using a gain material and a non-linear optical fiber mirror using an 8-type pulsed optical fiber laser have the advantage of being simple and easy to make, but have a disadvantage of not generating a stable optical pulse train.;Thus, the present invention implements an 8-type pulsed fiber laser that generates stable femtosecond optical pulse train using DI-LOLM (asymmetric nonlinear fiber mirror).;The present invention is to 1) reduce the noise generated when a pulse is passed in both directions in the optical amplifier by placing the optical amplifier in the unidirectional linear loop region without inserting the optical amplifier in the NOLM, 2) inserting the optical amplifier into the NOLM 8-way optical pulse using an asymmetric nonlinear fiber mirror to improve the switching characteristics using DI-NOLM using optical fibers with two different dispersion values in the NOLM region by placing the optical amplifier in the unidirectional linear loop part Present the laser.;Therefore, the present invention can produce femtosecond optical pulse heat, and can be applied to applications such as ultrafast reaction measurement, laser processing, medical laser using the same.
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