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We present the full characterization of the beatnote of an erbium doped distributed feedback fiber laser (DFB-FL) operating on two orthogonally polarized eigenstates around 1.55 µm. The dual-frequency laser (DFL) in the free running regime generates a microwave signals around 1 GHz with a RIN lower than −115 dB/Hz over the range 50 kHz–10 MHz and a phase noise of −67 dBc/Hz at 10 kHz of the RF carrier...
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