光学精密工程2017，Vol.25Issue(4)：827-834,8.DOI:10.3788/OPE.20172504.0827
基于强度-相位级联调制的微波光子下变频法
Microwave photonic down-conversion method using intensity-phase cascaded modulation
摘要
Abstract
In order to optimize the Spurious Free Dynamic Range (SFDR) of microwave photonic frequency down-conversion, a microwave photonic down-conversion method based on intensity and phase cascaded modulation was proposed and verified by using a Mach-Zehnder modulator (MZM) with feedback control module and a phase modulator (PM).The principle of frequency down-conversion and influence of power of local oscillator on system performance were derived theoretically and analyzed in simulation.The MZM-PM cascade microwave photonic down-conversion system was built, in which a self-developed DC bias feedback module was applied to enable the MZM at a stable operating state.Then the performance of system was tested experimentally.The results demonstrate that the gain and SFDR are-6.65 dB and 108.62 dB/Hz2/3 respectively, which have been improved 3.56 dB and 19.87 dB respectively compared with the conventional MZM-MZM cascade down-conversion system.In addition, microwave photonic down-conversion method based on intensity and phase cascaded modulation only requires a single DC bias voltage, and the stability of operating state can be controlled by the feedback module.The system can offer microwave photonic frequency down-conversion in high dynamic range with a simple structure and stable performance.关键词
微波光子学/下变频/增益/无杂散动态范围Key words
microwave photonics/frequency down-conversion/gain/spurious-free dynamic range分类
信息技术与安全科学引用本文复制引用
王云新,李静楠,杜浩峥,王大勇,周涛,钟欣,杨登才,贾喻鹏..基于强度-相位级联调制的微波光子下变频法[J].光学精密工程,2017,25(4):827-834,8.基金项目
国家自然科学基金资助项目(No.61372061) （No.61372061）
北京市青年拔尖创新人才资助项目(No.CIT&TCD201504020) （No.CIT&TCD201504020）
日新人才和中央支持地方专项配套项目 （）
