10 GHz mode-locked Er-doped fiber laser based on an all-PM fiber loop with in-loop phase modulation and the high-speed wavelength-swept application

• Main Authors: Hung, Chih-Hao, 洪智皓
• Other Authors: Lai, Yin-Chieh
• Format: Others
• Language: en_US
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/gtfdwe

碩士 === 國立交通大學 === 光電工程研究所 === 105 === In this thesis work, we mainly utilize the polarization maintaining fibers for constructing the mode-locked fiber lasers. The gain fiber we use is the Er-doped fiber and an EO phase modulator is inserted into the optical fiber loop for active mode-locking. The travelling phase modulator can adjust the phase bias of the fiber loop and as a result, it can also change the fiber loop transmission. By suitably selecting the modulation frequency of the phase modulator, we successfully realize active mode-locking at the 10 GHz high repetition rate through the harmonic mode-locking technique. In addition, we use a voltage tuning dielectric resonator oscillator (DRO) as the 10 GHz signal generator to sweep the modulation frequency. We successfully achieve a 10 GHz high repetition rate mode-locked Er-doped fiber laser with high-speed optical wavelength sweeping capability. The widest sweep range is about 25 nm when the sweep rate is about 8.5 kHz.