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. Author manuscript; available in PMC: 2020 Feb 12.
Published in final edited form as: Phys Rev Appl. 2019 Jan 9;11(1):10.1103/physrevapplied.11.014018. doi: 10.1103/physrevapplied.11.014018

FIG. 1.

FIG. 1

Experimental setup. FFP, fixed Fabry-Pérot etalon; TFP, tunable Fabry-Pérot etalon; Iso, isolator; SOA, semiconductor optical amplifier; PC, polarization controller; FRM, Faraday rotating mirror; VOA, variable optical attenuator; OSA, optical spectrum analyser; FBG, fiber Bragg grating; PD, photo diode; BPD, balanced photo diode; C, circulator; FC, fiber collimator; G, 2D Galvanometer mirror set; L, objective lens; S, sample; AOM, acousto-optic modulator; LO, local oscillator; FG, frequency generator.