一种基于虚拟狭缝的光纤光谱解调装置和解调方法

By using a virtual slit generator and a beam width adjustment module, the spot diameter and pixel unit are dynamically adjusted, overcoming the limitations of fiber optic spectral demodulation modules in balancing high throughput and high resolution. This achieves efficient and integrated spectral demodulation, suitable for extreme environments such as aerospace.

CN121140979BActive Publication Date: 2026-07-17TIANJIN UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TIANJIN UNIV
Filing Date
2025-09-26
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing fiber optic spectral demodulation modules have limitations in terms of high throughput and high resolution. Physical slits cause light intensity loss and limit resolution, while detector pixel size and pixel binning techniques affect response speed and resolution.

Method used

A virtual slit generator is used to eliminate physical slits. Combined with a beam width adjustment module and pixel merging technology, the spot diameter and pixel unit are dynamically adjusted to achieve adjustable resolution and response speed, and an integrated optical path design.

Benefits of technology

It improves the utilization rate of light flux, reduces light intensity loss, achieves high-resolution spectral demodulation, and adapts to the miniaturization and multi-channel sensing requirements in extreme environments.

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Abstract

本发明公开一种基于虚拟狭缝的光纤光谱解调装置和解调方法,包括光源、光纤微腔传感器、光纤出射端口、虚拟狭缝生成器、准直反射镜、光束宽度调节模块、衍射光栅、会聚反射镜、光电探测阵列、信号采集与处理模块;光源发出光信号入射至光纤微腔传感器进行调制,输出携带微腔腔长变化信息的光信号,随后经虚拟狭缝生成器进行缩束为条形光斑后经准直反射镜进入光束宽度调节模块,动态调节光斑的直径,再经会聚反射镜、光电检测阵列进入信号采集与处理模块,将电压信号进行模数转换后提取干涉信号峰值位置,并解算出微腔腔长变化量。
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