Phase noise of a microwave photonic channel: direct-current versus external electro-optic modulation
Damien Teyssieux,
Jacques Millo,
Enrico Rubiola
et al.
Abstract:We characterize the phase noise of a microwave photonic channel, where a 10 GHz signal is carried by an intensity-modulated light beam over a short optical fiber, and detected. Two options are compared: (i) an electro-optic modulator (EOM), and (ii) the direct modulation of the laser current. The 1.55 µm laser and the detector are the same. The effect of experimental parameters is investigated, the main being the microwave power and the laser bias current. The main result is that the upper bound of the phase f… Show more
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