Fig. 3: Experimental testing setup.
From: Lithium niobate photonic-crystal electro-optic modulator
Light is coupled into and out of the EOM chip via one lensed fiber. The inset shows an optical microscopic image of an EOM with the RF probe in contact. The equipment in the highlighted dashed box is used for characterizing the performance of electro-optic modulation. VOA variable optical attenuator, MZI Mach–Zehnder interferometer, EDFA erbium-doped fiber amplifier, BPF bandpass filter, MNA, microwave network analyzer, PRBS pseudo-random binary sequence source.
