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Enhanced S-band fiber laser performance with a thulium-doped ZBLAN photonic crystal fiber

A. R. MUHAMMAD1, H. AHMAD1, S. W. HARUN1,2,*

Affiliation

  1. Photonics Research Centre, University of Malaya 50603 Kuala Lumpur, Malaysia
  2. Department of Electrical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia

Abstract

A new method is proposed and studied to improve the lasing performance of a Thulium-doped fiber laser (TDFL) using a photonic crystal fiber (PCF) filter approach. Fluoride, ZBLAN was used as the host material for the proposed PCF gain medium with an amplified spontaneous emission (ASE) suppression capability. The PCF was designed by using finite element method (FEM) analysis to suppress both Thulium’s ASEs at 0.8 µm and 1.8 µm band and thus increases the population inversion in S-band region. S-band lasing enhancements on slope efficiency was observed to improve from 65% to 73% when compared with normal TDF at the wavelength region between 1.42 and 1.47 µm..

Keywords

Photonic crystal fiber (PCF), Thulium, filter based fiber, ASE suppressions.

Submitted at: July 14, 2014
Accepted at: Sept. 11, 2014

Citation

A. R. MUHAMMAD, H. AHMAD, S. W. HARUN, Enhanced S-band fiber laser performance with a thulium-doped ZBLAN photonic crystal fiber, Journal of Optoelectronics and Advanced Materials Vol. 16, Iss. 9-10, pp. 1083-1087 (2014)