Study on reflection spectrum characteristics of apodized fiber Bragg gratings for fiber mode-locked lasers with the wavelength of 2 μm

Jun Li; Xing Li

doi:10.1117/12.2639161

29 April 2022 Study on reflection spectrum characteristics of apodized fiber Bragg gratings for fiber mode-locked lasers with the wavelength of 2 μm

Jun Li, Xing Li

Author Affiliations +

Proceedings Volume 12255, 2022 International Conference on Optoelectronic Information and Functional Materials (OIFM 2022); 122550I (2022) https://doi.org/10.1117/12.2639161
Event: 2022 International Conference on Optoelectronic Information and Functional Materials (OIFM 2022), 2022, Chongqing, China

Abstract

Fiber mode-locked lasers with wavelength of 2 μm have been widely used in biomedical and optoelectronic technologies. As an important external cavity mode-selecting device for fiber mode-locked laser research, the fiber grating has been suffering from a rough reflection spectrum and a narrow reflection center spectrum. In this article, the reflection spectrum of a 2 μm apodized fiber bragg gratings was investigated by varying the length of the apodized fiber bragg gratings and numerically analyzing the reflection spectrum of a Gaussian AC apodized fiber bragg gratings and a Gaussian DC apodized fiber bragg gratings at 2 μm wavelength. The research results show that with the increase of the length of the Gaussian apodized fiber grating, the reflection peak gradually increases, and the spectral width of the reflection spectrum gradually decreases. For the fiber grating processed by the Gaussian apodization function, the side lobes of the reflection spectrum are well suppressed. After comparison, the reflection spectrum of the Gaussian DC apodized fiber grating is smoother, so its reflection spectrum characteristics are better than that of the Gaussian AC apodized fiber grating.

Citation Download Citation

Jun Li and Xing Li "Study on reflection spectrum characteristics of apodized fiber Bragg gratings for fiber mode-locked lasers with the wavelength of 2 μm", Proc. SPIE 12255, 2022 International Conference on Optoelectronic Information and Functional Materials (OIFM 2022), 122550I (29 April 2022); https://doi.org/10.1117/12.2639161

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