光纤耦合透镜衍射光栅的光谱滤波效应

IF 3 Q3 Physics and Astronomy

Results in Optics Pub Date : 2025-08-05 DOI:10.1016/j.rio.2025.100875

Seonjong Ryu , Jinpyo Jeong , Mintae Kang , Taemin Son , Andy Chong

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引用次数: 0

摘要

本文提出了一种由衍射光栅、耦合透镜和光纤组成的光谱滤波器的理论研究。由于衍射光束在空间上是高度分散的，耦合到光纤中自然会产生高斯光谱滤波效应。利用射线传递矩阵，我们推导出简单的公式来计算光谱滤波器带宽和群速度色散。该研究为设计基于光纤的光谱滤波器，特别是锁模光纤激光器提供了见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Spectral filtering effect of diffraction gratings with a lens coupling to optical fibers

We present a theoretical study of a spectral filter, which consists of a diffraction grating, a coupling lens, and an optical fiber. As the diffracted beam is highly dispersed spatially, coupling into an optical fiber naturally creates a Gaussian spectral filtering effect. Using ray transfer matrices, we derive simple equations to calculate the spectral filter bandwidth and the group velocity dispersion. This study offers insights for designing fiber-based spectral filters, particularly for mode-locked fiber lasers.

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