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A new absolute distance measurement system is demonstrated in this paper, which is based on a dual-wavelength passive mode-locked fiber laser. By controlling the intracavity loss and spectral filtering, the cavity mode-locked by a single-wall carbon nanotube saturable absorber is able to generate two pulse trains at slightly different repetition rates simultaneously with high mutual coherence. Comparisons...
Laser ranging based on asynchronous sampling of ultrashort optical pulses is proposed and experimentally demonstrated using just one polarization-multiplexed mode-locked fiber laser, which produces two orthogonal polarized, coherent pulse trains with slightly different repetition rates.
A high-resolution laser ranging scheme using one dual-wavelength femtosecond fiber laser, which generates a dual-comb with their frequency difference inherently locked by the intracavity dispersion, is experimentally demonstrated for the first time.
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