Abstract
Conventional slow and fast light (SFL) systems are based on active or nonlinear media or photonic band-gap systems. Radiofrequency (RF) interferometric systems were recently explored for sustaining fast and slow light, owing to their simple structures and passive operation. This Letter introduces a simple, effective, and efficient SFL system based on a linear and passive microwave-photonic (MWP) fiber optic Mach–Zehnder interferometer (MZI). By optically tuning the light transmission ratio of the two fiber beams of the MZI (i.e., the optical carrier), we demonstrate that both delay and advancement of a RF signal (i.e., the envelope signal) can be realized. The magnitude of the signal group delay can also be adjusted using the optical tuning method. Therefore, high-degree manipulation of signal group delay can be achieved using the proposed MWP fiber optic MZI system.
Recommended Citation
C. Zhu et al., "Group Delay Manipulation in a Passive Microwave-Photonic Fiber Optic Mach–zehnder Interferometer," Optics Letters, vol. 47, no. 18, pp. 4688 - 4691, Optica, Sep 2022.
The definitive version is available at https://doi.org/10.1364/OL.469879
Department(s)
Electrical and Computer Engineering
International Standard Serial Number (ISSN)
1539-4794; 0146-9592
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2023 Optica, All rights reserved.
Publication Date
15 Sep 2022
PubMed ID
36107064
