Abstract
We present what we believe is a novel approach to generate a dual wavelength in a single fiber-ring oscillator, which is based on microfiber-assisted nonlinear multimode interference. In the software simulation, the mode locker could not only strengthen the spatial filtering and spectral filtering but could also improve the signal-to-noise ratio of the mode-locked pulse over the single mode fiber-graded index multimode fiber-single mode fibers (SMSs). In the experiment, the stable and compact dual-wavelength mode-locked output was achieved by using the proposed mode-locked fiber laser, without any complex controlling electronics. This new optimized mode-locking method provides a compact and low-cost solution for dual-comb systems.
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