采用色散马赫-曾德尔结构的可调谐啁啾微波光子滤波器。

Tunable chirped microwave photonic filter employing a dispersive Mach-Zehnder structure.

机构信息

State Key Laboratory on Integrated Optoelectronics/Tsinghua National Laboratory for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing, China.

出版信息

Opt Lett. 2011 Sep 1;36(17):3518-20. doi: 10.1364/OL.36.003518.

DOI:10.1364/OL.36.003518

PMID:21886263

Abstract

A Mach-Zehnder structure with modulation in one arm and dispersive time delay in the other is proposed to implement highly flexible single-bandpass chirped microwave photonic filters based on broadband optical sources. Both the amplitude response and the time delay slope can be fully reconfigured via control of the optical spectra and dispersion. The passband can also be widely tuned without changing the shape. A chirped filter with a bandwidth of ∼4 GHz, a delay slope of ∼-0.6 ns/GHz, and a tunability up to 40 GHz is demonstrated experimentally.

摘要

提出了一种马赫-曾德尔结构，该结构在一个臂中进行调制，在另一个臂中进行色散延时，以实现基于宽带光源的高度灵活的单带通啁啾微波光子滤波器。通过控制光学光谱和色散，可以完全重新配置幅度响应和延时斜率。在不改变形状的情况下，通带也可以进行广泛调谐。实验证明，该啁啾滤波器具有约 4GHz 的带宽、约-0.6ns/GHz 的延时斜率和高达 40GHz 的调谐能力。