Experimental demonstration of 5-bit phase-shifted all-optical analog-to-digital converter
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摘要:
A 5-bit photonic analog-to-digital conversion under a sampling rate of 10 Gs/s is experimentally demonstrated.In the experiment,the birefringence walk-off in the scheme is compensated,and 16 high-extinction ratio optical transfer functions with different phase shifts are obtained.A 1-GHz sinusoidal analog signal is sampled and quantized by optical processing,and the effective number of bits obtained is 4.17.