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. 2016 Dec 9;6:38786. doi: 10.1038/srep38786

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Copyright © 2016, The Author(s)

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VCSEL: vertical-cavity surface-emitting laser; MZI: Mach-Zehnder interferometer; FBG: fiber Bragg grating (λ₀ = 1270.4 nm, reflectivity = 99.91%, ∆λ = 0.4 nm); WDM: wavelength-division multiplexing module; PC: fiber polarization controller; DAQ: data acquisition; FC: fiber coupler.