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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 30,
  • Issue 17,
  • pp. 2770-2775
  • (2012)

Er-Doped Fiber Laser Mode-Locked by CVD-Graphene Saturable Absorber

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Abstract

Erbium-doped fiber laser passively mode-locked by bilayer graphene is presented. The graphene layers were grown by chemical vapor deposition (CVD) on Cu substrate and transferred onto a fused silica window, forming a saturable absorber (SA). Low non-saturable losses and modulation depth as high as 55% allowed to achieve soliton pulses with over 11 nm bandwidth and nearly-transform limited 315 fs duration at 1564 nm center wavelength. The paper describes the design of the laser construction, as well as the graphene-SA preparation process. Our study demonstrates, that CVD-Cu graphene transferred on glass substrate may be used for efficient mode-locking of fiber lasers.

© 2012 IEEE

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