Generation of a frequency-quadrupled phase-coded signal using optical carrier phase shifting and balanced detection

被引：23

作者：

Li, Xuan ^{[1
]}

Zhao, Shanghong ^{[1
]}

Pan, Shilong ^{[2
]}

Zhu, Zihang ^{[1
]}

Qu, Kun ^{[1
]}

Lin, Tao ^{[1
]}

机构：

[1] Air Force Engn Univ, Informat & Nav Coll, Xian 710077, Peoples R China

[2] Nanjing Univ Aeronaut & Astronaut, Minist Educ, Key Lab Radar Imaging & Microwave Photon, Nanjing 210016, Jiangsu, Peoples R China

来源：

APPLIED OPTICS | 2017年 / 56卷 / 04期

基金：

中国国家自然科学基金;

关键词：

WAVE-FORM GENERATION; PHOTONIC GENERATION; MICROWAVE SIGNALS; POLARIZATION-MODULATOR; TUNABILITY; PULSES;

D O I：

10.1364/AO.56.001151

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A novel approach for photonic generation of a frequency-quadrupled phase-coded signal using optical carrier shifting and balanced detection is proposed and demonstrated. The key component of the scheme is an integrated dual-polarization quadrature phase shift-keying (DP-QPSK) modulator. In the modulator, an RF signal is applied to the upper QPSK modulator to generate high-order optical sidebands, while an electrical coding signal is applied to the bottom QPSK modulator to perform optical carrier phase shifting. After that, a frequency-quadrupled phase-coded signal with an exact p-phase shift is generated through balanced detection. The proposed scheme has a simple, compact structure and good tunability. Besides, a phase-coded pulse can be directly obtained when a three-level rectangular coding signal is applied. A proof-of-concept experiment is carried out. The generation of a 2-Gbit/s phase-coded signal with a frequency tuning from 12.12 to 28 GHz is experimentally demonstrated, and the generation of a phase-coded microwave pulse is also verified. (C) 2017 Optical Society of America

引用

页码：1151 / 1156

页数：6

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