Chinese Journal of Lasers, Vol. 46, Issue 9, 0901009 (2019)
Mechanism of Broadband Spectrum Generation Based on Nonlinear Ytterbium-Doped Fiber Amplifier
Guo Jinyi, Xu Runqin, Fan Luyao, Xu Changxing, Tian Jinrong, and Song Yanrong*
- College of Applied Sciences, Beijing University of Technology, Beijing 100124, China
The influences of central wavelength of the seed pulse and gain fiber length of the amplifier on the characteristics of broadband spectra are systematically investigated based on nonlinear ytterbium-doped fiber amplifiers. The dissipative solitons from the nonlinear amplifier are obtained by using the nonlinear polarization rotation mode-locking technique. The best flat wide spectrum with wavelength range of 1040-1600 nm is obtained when the center wavelength of the seed pulse is 1041 nm and the gain fiber length of the amplifier is 8 m. The flatness is about 10 dB, and the wide spectral flatness is less than 1.5 dB from 1040 to 1250 nm.
Please Enter Your Email: