Miniature Fourier Transform Spectrometer Based on Thin-Film Lithium Niobate

A miniature Fourier transform spectrometer is proposed using a thin-film lithium niobate electro-optical modulator instead of the conventional modulator made by titanium diffusion in lithium niobate. The modulator was fabricated by a contact lithography process, and its voltage-length and optical wa...

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Detalles Bibliográficos
Autores principales: Zhang, Lichao, Gou, Guangyang, Chen, Jiamin, Li, Wangzhe, Ma, Weichao, Li, Ruoming, An, Junming, Wang, Yue, Liu, Yuanyuan, Yan, Wei, Ma, Tianjun, Liu, Chunxiu, Cheng, Jianjun, Qi, Zhimei, Xue, Ning
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9960155/
https://www.ncbi.nlm.nih.gov/pubmed/36838158
http://dx.doi.org/10.3390/mi14020458
Descripción
Sumario:A miniature Fourier transform spectrometer is proposed using a thin-film lithium niobate electro-optical modulator instead of the conventional modulator made by titanium diffusion in lithium niobate. The modulator was fabricated by a contact lithography process, and its voltage-length and optical waveguide loss were 2.26 V·cm and 1.01 dB/cm, respectively. Based on the wavelength dispersion of the half-wave voltage of the fabricated modulator, the emission spectrum of the input signal was retrieved by Fourier transform processing of the interferogram, and the analysis of the experimental data of monochromatic light shows that the proposed miniaturized FTS can effectively identify the input signal wavelength.

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