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. 2013 Nov 14;3:3223. doi: 10.1038/srep03223

Figure 1. Setup of the HRR fiber laser.

Figure 1

LD, laser diode; WDM, wavelength division multiplexer; EDF, erbium-doped fiber; SMF, single-mode fiber; PC, polarization controller; OC, optical coupler; OTDL, optical time delay line. The MZI is composed of two 5:5 OCs and an OTDL.