100 GHz Sub-picosecond Hybrid Soliton Mode-locked Erbium-doped Fiber Laser with Low Net Dispersion

• Main Authors: Gong, Jia-Hong, 龔家宏
• Other Authors: Lia, Yin-chieh
• Format: Others
• Language: en_US
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/76ah74

碩士 === 國立交通大學 === 光電工程研究所 === 105 === In the thesis work, by optimizing the laser cavity net dispersion and the external pulse compression, we have successfully demonstrated a stable 100 GHz sub-picosecond hybrid mode-locked Erbium-doped fiber laser with a high-finesse intra-cavity Fabray-Perot etalon. The center wavelength of the laser is between 1540 nm and 1560 nm and the laser is mode-locked under the soliton state. In addition, the laser output average power is about 3~4 mW. When the currents of the two semiconductor pump lasers are greater than 500 mA, by carefully adjusting the polarization controllers, we can obtain a stable 100 GHz passive mode-locking pulse train. After we turn on the 10 GHz active phase modulation, we can further improve the mode-locking quality and get a clearer mode-locking pulse train with shorter pulse-width and higher auto-correlation contrast. The repetition-rate is 100 GHz and the pulse width is about 800 fs. We have measured the important lasing characteristics of the studied laser under both the passive and hybrid mode-locking cases.