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Few-layer graphene membrane as an ultrafast mode-locker in erbium-doped fiber laser

Feng De-Jun Hang Wen-Yu Jiang Shou-Zhen Ji Wei Jia Dong-Fang

Few-layer graphene membrane as an ultrafast mode-locker in erbium-doped fiber laser

Feng De-Jun, Hang Wen-Yu, Jiang Shou-Zhen, Ji Wei, Jia Dong-Fang
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Publishing process
  • Received Date:  25 August 2012
  • Accepted Date:  01 November 2012
  • Published Online:  05 March 2013

Few-layer graphene membrane as an ultrafast mode-locker in erbium-doped fiber laser

  • 1. School of Information Science and Engineering, Shan Dong University, Jinan 250100, China;
  • 2. College of Physics and Electronics, Shandong Normal University, Jinan 250014, China;
  • 3. College of Precision Instrument and Optoelectronics Engineering, Tianjin Uniuersity, Tianjin 300072, China
Fund Project:  Project supported by the Natural Science Foundation of Shandong Province, China (Grant No. ZR2011FM013), the Independent Innovation Foundation of Shandong University, China (Grant No. 2010TS014), and the Key laboratory of Opto-electronic Information Technology, Ministry of Education (Tianjin University).

Abstract: Single-layer graphene film is fabricated on the copper foil by using chemical vapor deposition method, and the corresponding Raman spectrum is measured. The graphene membrane is transferred to the facet of zirconium oxide of a fiber jumper. The mode-lock Er-doped fiber laser with few-layer graphene membrane as saturable absorber is experimentally studied, which has a ring structure and uses a 10% portion of a fiber coupler as the laser output. The laser generates a pulse train at a 7.69 MHz repetition rate, with a full width at half maximum of 58.8 ps. The corresponding time-bandwidth product is 1.98, indicating that the pulses are chirped. The peak wavelength and 3 dB bandwidth of the laser are 1560.1 nm and 0.27 nm respectively. Through changing the air gap between two the fiber ends, 4 nm wavelength tuning is observed.

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