In this letter, we report a new Self-starting figure-eight fiber laser based on a dispersion-imbalanced nonlinear optical loop mirror (DI-NOLM) with lumped dispersive elements for the first time. We have shown that the device can operate in several different operation modes such as a noiselike square pulse, a harmonic mode-locked multipulse, and a single-pulse operation modes depending on its pump power and polarization state in the cavity. As no active elements is inside the DI-NOLM and no continuous-wave light can pass through the DI-NOLM, this laser potentially has many advantages over conventional pulsed fiber laser systems.
Bibliographical noteFunding Information:
Manuscript received August 30, 2001; revised November 28, 2001. This work was supported in part by the Korea Science and Engineering Foundation (KOSEF) through the Ultrafast Fiber-Optic Networks Research Center at K-JIST and by the Korean Ministry of Education under Program BK21.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering