| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Performance Comparison of Mode-Locked Erbium-Doped Fiber Laser with Nonlinear Polarization Rotation and Saturable Absorber Approaches |
| M. A. Ismail1,S. J. Tan1,N. S. Shahabuddin1,S. W. Harun1, 2**,H. Arof1,H. Ahmad2 |
1Department of Electrical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
2Photonics Research Center, Department of Physics, University of Malaya, 50603 Kuala Lumpur, Malaysia |
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| Cite this article: |
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M. A. Ismail, S. J. Tan, N. S. Shahabuddin et al 2012 Chin. Phys. Lett. 29 054216 |
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Abstract A mode-locked erbium-doped fiber laser (EDFL) is demonstrated using a highly concentrated erbium-doped fiber (EDF) as the gain medium in a ring configuration with and without a saturable absorber (SA). Without the SA, the proposed laser generates soliton pulses with a repetition rate of 12 MHz, pulse width of 1.11 ps and energy pulse of 1.6 pJ. By incorporating SA in the ring cavity, the optical output of the laser changes from soliton to stretched pulses due to the slight change in the group velocity dispersion. With the SA, a cleaner pulse is obtained with a repetition rate of 11.3 MHz, a pulse width of 0.58 ps and a pulse energy of 2.3 pJ.
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| Keywords:
42.55.Wd
42.60.Fc
42.65.Re
42.65.Tg
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Received: 29 December 2011
Published: 30 April 2012
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| PACS: |
42.55.Wd
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(Fiber lasers)
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42.60.Fc
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(Modulation, tuning, and mode locking)
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42.65.Re
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(Ultrafast processes; optical pulse generation and pulse compression)
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42.65.Tg
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(Optical solitons; nonlinear guided waves)
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