title: Proposal for photonic quantization with differential encoding using a phase modulator and delay-line interferometers.
abstract: A photonic quantization approach to implementing analog-to-digital conversion (ADC) in the optical domain with differential encoding employing a phase modulator and delay-line interferometers (DLIs) is proposed and demonstrated. In the proposed ADC system, the phase-modulated signal is sent to an array of DLIs that have identical time delay difference, but different phase shifts, which are employed to achieve quantization with differential encoding. A proof-of-concept experiment is performed. The quantization of a 10 GHz sinusoidal signal with a bit length of 4 is experimentally demonstrated.
authors.affiliation: Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China. chihao@zju.edu.cn
authors.forename: H
authors.initials: H
authors.lastname: Chi
authors.forename: Z
authors.initials: Z
authors.lastname: Li
authors.forename: X
authors.initials: X
authors.lastname: Zhang
authors.forename: S
authors.initials: S
authors.lastname: Zheng
authors.forename: X
authors.initials: X
authors.lastname: Jin
authors.forename: J P
authors.initials: JP
authors.lastname: Yao