Home > Archive>Volume 17, Issue 12, 2021 >729-733. DOI:https://doi.org/10.1007/s11801-021-1015-4
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Multi-pulse operation in an actively Q-switched Er-doped fiber laser based on electro-optic modulator
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Engineering Research Center of Optoelectronic Devices & Communication Technology, Ministry of Education, Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Electrical and Electronic Engineering, Tianjin University of Technology, Tianjin 300384, China

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This work has been supported by the Key Project of Tianjin Natural Science Foundation (No.20JCZDJC00500).

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    Abstract:

    In this paper, we report an experimental observation of different states of multi-pulse operation in an actively Q-switched Er-doped fiber laser, which has applications in pulse coding in optical communications. The Q factor is switched by an electro-optic modulator. Completely separated multiple pulses are obtained due to the short response time of the modulator. The influence of pump power and modulation frequency on output pulse state is investigated. In the experiment, the repetition rate of Q-switched pulse is not always consistent with the modulation signal. Single-pulse, single-dual-pulse, dual-pulse, dual-triple pulse, and multiple pulses are observed in one modulation period by increasing pump power. Single-pulse is also observed in two or three modulation periods by increasing the frequency of modulation signal. In addition, the waveform of modulating signal and the polarization state of modulated signal also affect the multi-pulse operation accordingly.

    Reference
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ZHANG Ailing, LIU Chang, PAN Honggang, GUO Shuying. Multi-pulse operation in an actively Q-switched Er-doped fiber laser based on electro-optic modulator[J]. Optoelectronics Letters,2021,17(12):729-733

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History
  • Received:February 19,2021
  • Revised:March 28,2021
  • Online: December 24,2021
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