Design of a broadband fiber optic mode coupler for multimode optical coherence tomography

• Main Authors: Hu, Dora Juan Juan, Liu, Linbo, Dong, Hui, Zhang, Hailiang
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2023
• Subjects: Engineering::Electrical and electronic engineering; Multimode Optical Coherence Tomography; Few-Mode Fiber
• Online Access: https://hdl.handle.net/10356/169770
• Institution: Nanyang Technological University

In this paper, we propose an optical fiber-based broadband mode coupler for multimode optical coherence tomography (OCT) in the O-band (1.26–1.36 μm). The proposed device uses a tapered few-mode fiber (FMF) to lower the effective mode index of the selected higher-order mode, which can be phase match...