Doped Erbium Fiber Source

Today's large-capacity (Tbit /s) long-distance optical fiber communication system has been the long-term development, expanding the capacity of optical fiber communication network is an effective way to wider use of wavelength division multiplexing (WDM) technology, A variety of new fiber-optic active devices and passive components are being developed to Meet the requirements of WDM communication technology。Which the erbium-doped fiber source because of its excellent features in many systems has been widely used.Paper first introduced the development of optical fiber communication, optical fiber sensing technology and its applications,the characteristics, application and development of Erbium-doped fiber light source.Followed by a detailed description of erbium-doped fiber source of theoretical knowledge, including the basic principles and structure Etc, and systematically described the mainly optoelectronic devices from the theory and experiment various aspects in the erbium-doped fiber laser. Finally, the study of erbium-doped fiber source experiment, in the experimental part of Fluorescent source:use the double-pass backward(DBF) structure To achieve C-band source, which 3dB bandwidth of 36.8nm, power 8.5mW; use the structure of Double-pass forward(DPF) access to L-band ASE, powerll.OlmW, the average wavelength of 1586.51nm, 3dB bandwidth of 36.0nm, flat areas mainly in the L-band (1570～1620nm);use the dual-stage double-Pass structure to Formated C + L band source,which output power of 31mW, 3dB bandwidth 73.8nm, the average wavelength of 1568.88nm .In the course of the experimental primarily analysis the influence on the source spectral characteristics of the output,which caused by optical reflectors, pump power etc.at the same time, a ring erbium-doped fiber laser be produced by pasting Fiber Bragg Grating in the piezoelectric elements as a wavelength tunable component, according to the principle of wavelength tuning of FBGthe tuning range of output wavelength is 2.13nm and tuning linearity of 99.88% are got.