Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 28, Issue 1, Pages 87-90Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2015.2487049
Keywords
Optical fibers; optical oscillators; optical pulse generation
Funding
- National Key Scientific Instrument Project [2012YQ150092]
- National Basic Research Program of China [2011CB808105]
- National Natural Science Foundation of China [11404211, 11434005, 11374370]
- Shanghai Municipal Science and Technology Commission [14JC1401600, 13ZR1458100]
- Hujiang Foundation of China [D15014]
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Self-started mode-locking in a polarization-maintaining figure-eight Er-doped fiber laser was demonstrated by optimizing the dispersion and the nonlinearity in the nonlinear amplifier loop mirror. Experimental results indicate that the build-up time of soliton pulse is directly linked to the available pump power and net dispersion. Three laser diodes, one in a linear loop and the others in a nonlinear loop, were applied to provide enough pump power for the start-up of the nonlinear evolution. As long as 8-min build-up time was observed as the net dispersion approaches to -0.115 and -0.043 ps(2), it dramatically decreased to approximately millisecond order of magnitude as the net dispersion was optimized to -0.062 ps(2). Stable single soliton could be obtained by reducing the hysteresis pump power.
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