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Proceedings Paper

Fundamental and harmonic soliton mode-locked erbium-doped fiber laser using single-walled carbon nanotubes embedded in poly (ethylene oxide) film saturable absorber
Author(s): R. Z. R. R. Rosdin; A. Zarei; N. M. Ali; H. Arof; H. Ahmad; S. W. Harun
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Paper Abstract

This paper presents a simple, compact and low cost mode-locked Erbium-doped fiber laser (EDFL) using a single-walled carbon nanotubes (SWCNTs) embedded in poly(ethylene oxide) (PEO) film as a passive saturable absorber. The film was fabricated using a prepared homogeneous SWCNT solution, which was mixed with a diluted PEO solution and casted onto a glass petri dish to form a thin film by evaporation technique. The film, with a thickness of 50 μm, is sandwiched between two fiber connectors to construct a saturable absorber, which is then integrated in an EDFL cavity to generate a self-started stable soliton pulses operating at 1560.8 nm. The soliton pulse starts to lase at 1480 nm pup power threshold of 12.3 mW to produce pulse train with repetition rate of 11.21 MHz, pulse width of 1.02 ps, average output power of 0.65 mW and pulse energy of 57.98 pJ. Then, we observed the 4th, 7th and 15th harmonic of fundamental cavity frequency start to occur when the pump powers are further increased to 14.9, 17.5 and 20.1 mW, respectively. The 4th harmonic pulses are characterized in detail with a repetition rate of 44.84 MHz, a transform-limited pulse width of 1.19 ps, side-mode suppression ratio of larger than 20 dB and pulse energy of 9.14 pJ.

Paper Details

Date Published: 9 January 2015
PDF: 6 pages
Proc. SPIE 9444, International Seminar on Photonics, Optics, and Its Applications (ISPhOA 2014), 94440I (9 January 2015); doi: 10.1117/12.2075109
Show Author Affiliations
R. Z. R. R. Rosdin, Univ. of Malaya (Malaysia)
A. Zarei, Univ. of Malaya (Malaysia)
N. M. Ali, Univ. of Malaya (Malaysia)
H. Arof, Univ. of Malaya (Malaysia)
H. Ahmad, Univ. of Malaya (Malaysia)
S. W. Harun, Univ. of Malaya (Malaysia)


Published in SPIE Proceedings Vol. 9444:
International Seminar on Photonics, Optics, and Its Applications (ISPhOA 2014)
Aulia Nasution, Editor(s)

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