Source: OPTICS EXPRESS Volume: 31  Issue: 2  Pages: 1931-1942  DOI: 10.1364/OE.474884  Published: JAN 16 2023 

 

Abstract: In this paper, an on-chip photonic sampled and quantized analog-to-digital converter (ADC) on thin-film lithium niobate platform is experimentally demonstrated. Using two phase modulators as a sampler and a 5x5 multimode interference (MMI) coupler as a quantizer, a 1 GHz sinusoidal analog input signal was successfully converted to a digitized output with a 20 GSample/s sampling rate. To evaluate the system performance, the quantization curves together with the transfer function of the ADC were measured. The experimental effective number of bits (ENOB) was 3.17. The demonstrated device is capable of operating at a high frequency over 67 GHz, making it a promising solution for on-chip ultra-high speed analog-to-digital conversion.(c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

 

Accession Number: WOS:000994362400004

 

ISSN: 1094-4087