Multi-wavelength passive Q-switched Er-doped fiber laser with a semiconductor saturable absorber

• Main Authors: Chou, Hsin-Yao, 周妡遙
• Other Authors: Lai, Yin-Chieh
• Format: Others
• Language: en_US
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/mc439b

碩士 === 國立交通大學 === 光電工程研究所 === 106 === In this thesis study, we build a passive Q-switched E-doped fiber laser with a semiconductor saturable absorber. The laser constitutes of 2.89 m SMF-28, 0.7 m Er-doped fiber, and 2 m high nonlinearity fiber. By adjusting the two polarization controllers inside the cavity as well as the 980 nm laser diode pump power, we can let laser operate under two different Q-switched states: single-wavelength state and multi-wavelength state. We have experimentally investigated the lasing characteristics of the multi-wavelength Q-switched state and find an interesting energy exchange oscillation phenomenon between the pulse amplitudes of different wavelengths.