Photonic sampled and quantized analog-to- digital converters on thin-film lithium niobate platform

Author:

Tu Donghe1ORCID,Huang Xingrui1ORCID,Yu Hang1,Yin Yuxiang1,Yu Zhiguo,Wei Zhongming2,Li Zhiyong

Affiliation:

1. University of Chinese Academy of Sciences

2. Institute of Semiconductors

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 5×5 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.

Funder

National Key Research and Development Program of China

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics

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2. An On-chip Optical Quantizer with an ENOB of 5.83 bits using a Thermo-optic Phase Shifter Array;2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings (ACP/POEM);2023-11-04

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