Study of Nd3+ -doped polarization maintaining fiber amplifier
Zhang Qiang1 , Yao Jian-Quan1 , Ren Guang-Jun2 , Wei Zhen2
(1)天津大学精密仪器与光电子工程学院，激光与光电子研究所，光电信息科学技术教育部重点实验室,天津 300072; (2)天津理工大学电子信息与通信工程学院，薄膜电子与通信器件天津市重点实验室，通信器件与技术教育部工程研究中心，天津 300191
Abstract The distribution of pump light and signal light power of Nd3+ -doped fiber amplifier along the fiber is numerically simulated. The Nd3 + -doped polarization-maintaining fiber amplifier is experimentally studied, which is pumped by 808nm semiconductor laser. The enlargement factor of small-signal is 300（the gain is 25dB）, and the steady 5W amplificatory pulse is obtained by using the self-made Nd:YAG passive mode-locking laser as seed source. The 86142B-type spectrograph and TDS5104 oscillograph are employed to detect the output laser, and the output power is measured by power meter.
Key words ：
fiber amplifier
Nd3+ -doped polarization-maintaining fiber
seed injection
reversing pump
Received: 2008-07-16
Published: 2009-06-20
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2009, Vol. 58 
