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基于液晶可调谐滤波器的高信噪比双波长传输。

Dual-wavelength transmission based on liquid crystal tunable filter with high signal-to-noise ratio.

作者信息

Dong Keyan, Li Xinhang, Cao Zhaoliang, Zhang Bo, Liang Zonglin, Zhang Lei, Wang Yanbo, Zheng Xin

机构信息

School of Optoelectronic Engineering, Changchun University of Science and Technology, Changchun, 130022, China.

Institute of Space Optoelectronic Technology, Changchun University of Science and Technology, Changchun, 130022, China.

出版信息

Sci Rep. 2024 Oct 10;14(1):23655. doi: 10.1038/s41598-024-74935-y.

DOI:10.1038/s41598-024-74935-y
PMID:39390095
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11467384/
Abstract

Aiming at the problem of limited transmission energy of liquid crystal tunable filter (LCTF), a dual-wavelength transmission system with high signal-to-noise ratio (SNR) is proposed in this paper. The proposed transmission factor Qp is the main influence on the number and location of transmission wavelengths as well as the bandwidth of each transmission wavelength for dual-wavelength systems. Dual-wavelength LCTF can improve the effective transmission energy of the system by increasing the number of filtering channels, and the transmission energy can be increased by about 1.8 times and 70% at short and long wavelengths, respectively, which improves the signal-to-noise ratio (SNR) of the system. Moreover, the dual-wavelength LCTF system is even possible to increase the transmission energy by about 7% at a 33% increase in spectral resolution. Therefore, the dual-wavelength LCTF transmission method not only can improve the SNR of target detection with dual-wavelength response features, but also can effectively solve the problem of contradiction between spectral resolution and spectral transmission energy.

摘要

针对液晶可调谐滤波器（LCTF）传输能量有限的问题，本文提出了一种高信噪比（SNR）的双波长传输系统。所提出的传输因子Qp对双波长系统的传输波长数量和位置以及每个传输波长的带宽有主要影响。双波长LCTF可以通过增加滤波通道数量来提高系统的有效传输能量，在短波长和长波长处，传输能量分别可提高约1.8倍和70%，从而提高了系统的信噪比（SNR）。此外，双波长LCTF系统在光谱分辨率提高33%的情况下，甚至有可能将传输能量提高约7%。因此，双波长LCTF传输方法不仅可以利用双波长响应特性提高目标检测的信噪比，还可以有效解决光谱分辨率与光谱传输能量之间的矛盾问题。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8fb5/11467384/453e46c64db5/41598_2024_74935_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8fb5/11467384/97fea3d98160/41598_2024_74935_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8fb5/11467384/c952166f8735/41598_2024_74935_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8fb5/11467384/eaa7099462e5/41598_2024_74935_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8fb5/11467384/fc7023d1b245/41598_2024_74935_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8fb5/11467384/f426ff12218f/41598_2024_74935_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8fb5/11467384/c2aa3cf62418/41598_2024_74935_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8fb5/11467384/453e46c64db5/41598_2024_74935_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8fb5/11467384/97fea3d98160/41598_2024_74935_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8fb5/11467384/c952166f8735/41598_2024_74935_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8fb5/11467384/eaa7099462e5/41598_2024_74935_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8fb5/11467384/fc7023d1b245/41598_2024_74935_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8fb5/11467384/f426ff12218f/41598_2024_74935_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8fb5/11467384/c2aa3cf62418/41598_2024_74935_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8fb5/11467384/453e46c64db5/41598_2024_74935_Fig7_HTML.jpg

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