Broadband and linearized photonic time-stretch analog-to-digital converter based on a compact dual-polarization modulator

被引：3

作者：

Yang, Bo ^{[1
]}

Ma, Zheng ^{[1
]}

Yang, Shuna ^{[1
]}

Chi, Hao ^{[1
]}

机构：

[1] Hangzhou Dianzi Univ, Sch Commun Engn, Hangzhou 310018, Peoples R China

来源：

APPLIED OPTICS | 2023年 / 62卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Binary phase shift keying - Frequency converters - Linearization - Modulators - Polarization;

D O I：

10.1364/AO.478901

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A broadband linearization scheme for a photonic time-stretch (PTS) analog-to-digital converter (ADC) is pro-posed based ona dual-polarization binary phase-shift keying (DP-BPSK) modulator with complementary parallel single-sideband (SSB) modulation. In this system, two stretched radio frequency signals, corresponding to the two orthogonal polarizations of the DP-BPSK modulator, are complementary, which can realize differential operation to eliminate the second-order harmonic distortion and pulse envelope distortion. Meanwhile, SSB modulation is used to avoid dispersion-induced power fading. Theoretical analysis and simulation results show that the proposed scheme can effectively improve the linear performance of PTS ADC, even considering the polarization-dependent delay deviation and amplitude offset. (c) 2023 Optica Publishing Group

引用

页码：921 / 926

页数：6

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