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Fig. 1. (Color online) Mode-locked fiber laser resonator utilizing nonlinear polarization rotation effect and Stokes meter. QWP, QWP1, QWP2: quarter-wave plates; HWP: half-wave plate; BPF: bandpass filter; PBS: polarizing beam splitter; WDM: wavelength division multiplexer; ISO: optical isolator; LP: linear polarizer.
New Phys.: Sae Mulli 2023;73:1001~1008 https://doi.org/10.3938/NPSM.73.1001
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