Acta Optica Sinica, Volume. 32, Issue 3, 314002(2012)
Investigation on Characteristics of Mode Hopping in Ultra-Narrow Linewidth Erbium-Doped Fiber Ring Laser under Pump Modulation
One type of mode-hopping detection system based on fiber Michelson interferometer is set up. The influence of pump modulation on the mode-hopping characteristics of ultra-narrow linewidth erbium-doped fiber ring laser is investigated experimentally through the system. The mode-hopping map of laser labeled by pump current is measured to reveal the mode-hopping characteristics. Numerical results show that the laser will orderly experience steady single-mode area, unsteady single-mode area and multimode area with the pump current increasing, and there exists a second threshold over which the laser will hop from single-mode into drastic multimode. Besides, frequency drift going with serial mode hops can be excited by pump-induced thermal effect or hostile disturbances applied on the laser cavity.
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Ma Mingxiang, Yang Huayong, Xu Pan, Hu Zhengliang, Hu Yongming. Investigation on Characteristics of Mode Hopping in Ultra-Narrow Linewidth Erbium-Doped Fiber Ring Laser under Pump Modulation[J]. Acta Optica Sinica, 2012, 32(3): 314002
Category: Lasers and Laser Optics
Received: Aug. 1, 2011
Accepted: --
Published Online: Jan. 17, 2012
The Author Email: Mingxiang Ma (guodongmamx@163.com)