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This study demonstrates a four-wavelength mode-locked DFB laser with high spectral purity, suggesting its use in DWDM systems and multi-channel applications.
We present a four-wavelength mode-locked 1.55 μm DFB laser with a chirped four-phase-shifted sampled Bragg grating, delivering transform-limited pulses with high spectral purity—ideal for DWDM and multi-channel photonic applications.
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Al-Rubaiee et al. (2025) studied this question.
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