Dual wavelength fibre laser with tunable channel spacing using an SOA and dual AWGs |
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| Authors: | H Ahmad MZ Zulkifli AA Latif K Thambiratnam SW Harun |
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| Affiliation: | 1. Photonics Laboratory, Department of Physics , University of Malaya , 50603 Kuala Lumpur, Malaysia mohdzamani@um.edu.my harith@um.edu.my;3. Photonics Laboratory, Department of Physics , University of Malaya , 50603 Kuala Lumpur, Malaysia;4. Department of Electrical Engineering, Faculty of Engineering , University of Malaya , 50603 Kuala Lumpur, Malaysia |
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| Abstract: | In this paper, we propose and demonstrate a dual wavelength fibre laser (DWFL) based on the use of an inhomogeneously-broadened semiconductor optical amplifier (SOA) gain medium as well as two arrayed waveguide gratings (AWGs) together with two optical channel selectors (OCSs) and a broadband fibre Bragg grating (FBG) to generate dual wavelength output at variable channel spacings. The widest spacing obtained from the DWFL is 12.21 nm, while the narrowest spacing is 1.16 nm. The DWFL has good stability with only minor power fluctuations of less than 2 dB and a side mode suppression ratio (SMSR) of approximately 38.5 dB with fluctuations of less than 0.5 dB. |
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| Keywords: | fibre laser DWDM SOA AWG |
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