Dual-cavity dual-output multi-wavelength fiber laser based on nonlinear polarization rotation effect |
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Authors: | S J Tan S W Harun N S Shahabuddin H Arof H Ahmad |
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Institution: | 1. Department of Electrical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia 2. Photonics Research Center, University of Malaya, 50603, Kuala Lumpur, Malaysia
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Abstract: | We demonstrate a multi-wavelength fiber laser based on nonlinear polarization rotation (NPR) in dual-cavity configuration with two output ports. The laser employs a piece of erbium doped fiber (EDF) and semiconductor optical amplifier (SOA) as the gain medium in a separate cavity. By incorporating PCF in the dual cavity the non-linear polarization rotation (NPR) effect is enhanced and thus higher output and more oscillating lasing can be achieved. The laser produces three strong lines with a spacing of 2.40 nm and side mode suppression ratio (SMSR) of more than 10 dB at 1535 nm region. Another output produces 8 lines of optical comb with a spacing of 0.54 at 1570 nm region. |
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