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Tunable wavelength generation in the 1 µm region incorporating a 16-channel arrayed waveguide grating (AWG)

A tunable single- and dual-wavelength ytterbium-doped fiber laser, incorporating a 16-channel arrayed waveguide grating is proposed and demonstrated. The side mode suppression ratio from the proposed setup has an average value of 52.97 dB (single-wavelength generation) and 58.19 dB (dual-wavelength generation). The tunable dual wavelength ranged from 1039.98 nm to 1047.48 nm with wavelength spacing ranging from 0.50 nm to 7.5 nm. A stability test from the experiment shows a power variation of 0.8 dB, and a wavelength fluctuation of 0.02 nm indicates the stability and reliability of the proposed work.