Affiliation:
1. Changchun University of Science and Technology
Abstract
A laser modulation and amplification system is designed to meet the demand of long-range space optical communication, which uses the high-speed semiconductor laser to integrate electro-absorption (EA) modulator as a seed source. Two optical fiber amplifier technologies are used. The erbium-doped fiber amplifier (EDFA) and single-mode semiconductor laser pumping are used in the first-level; erbium ytterbium co-doped fiber amplifier (EYDFA) and 2-4 multimode fiber laser pumping with good temperature characteristics are used in the second level, and the control method is automatic gain control. The experimental result shows that the modulation rate achieves to 10Gbps, and the output optical power achieves to 5W.
Publisher
Trans Tech Publications, Ltd.
Reference7 articles.
1. Zou Yancong, et al. Study on the free space-based optical communication technology [J]. Communications Technology, 2009, 42(1), pp.71-73.
2. Zhao Qian, et al. Electro absorption-modulated laser light-source module using selective area growth for 10 GbPs transmission. Acta Physical Sinica [J], 2006, 55(3), pp.1259-1263.
3. Cheng Yuanbing, et al. 40-Gbit/s low chirp electro absorption modulator integrated with DFB laser [J]. IEEE Photon. Technol. Let. 2009, 21(6), pp.356-358.
4. Li Wangzhe, et al. A narrow pass band and frequency-tunable microwave photonic filter based on phase-modulation to intensity-modulation conversion using a phase-shifted fiber bragg grating [J]. IEEE Transactions on Microwave Theory and Techniques, 2012, 60(5), pp.1287-1295.
5. Du Yang, et al. Gain-flattening of an er3+/yb3+ co-doped double-cladding fiber amplifier using a fiber loop mirror, Journal of Optoelectronics. Laser [J], 2013, 24(5), pp.878-885.