Optical properties of Bi-doped glass and fiber based on modified sol-gel method

Jing Yang; Xin Zhang; Jing Tang; Bo Liu; Xulin Liu; Huiyu He; Pu Wang

doi:10.1117/12.3038998

11 October 2024 Optical properties of Bi-doped glass and fiber based on modified sol-gel method

Jing Yang, Xin Zhang, Jing Tang, Bo Liu, Xulin Liu, Huiyu He, Pu Wang

Proceedings Volume 13287, Nineteenth National Conference on Laser Technology and Optoelectronics; 1328718 (2024) https://doi.org/10.1117/12.3038998
Event: Nineteenth National Conference on Laser Technology and Optoelectronics, 2024, Shanghai, China

Abstract

Bismuth (Bi)-doped glasses and fibers have been regarded as the most promising gain medium for broadband optical amplifiers. However, the Bi-doped glasses and fibers still meet low gain and insufficient efficiency due to the volatilization, uneven distribution, and uncontrollable valence states of Bi ions in the high-temperature (~2000°C) modified chemical vapor deposition process. Herein, we modified the sol-gel method and synthesized uniform Bi-doped glass with a doping concentration of 0.5wt.% Bi ions at 1300°C. Employing an 808nm LD as a pump, the Bi-doped glass showed a broadband fluorescence with the emission peak at 1413nm and a FWHM of 112nm. On this basis, the Bi-doped fibers were fabricated by rod-in-tube method. The background loss was measured to be 0.27dB/m at 1550nm. A 40m Bi-doped fiber amplifier was constructed by 808nm backward pumping. The maximum on-off gain at 1395nm reached 36dB, heralding the potential of our modified sol-gel method for high-gain Bi-doped glass and fiber fabrication.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jing Yang, Xin Zhang, Jing Tang, Bo Liu, Xulin Liu, Huiyu He, and Pu Wang "Optical properties of Bi-doped glass and fiber based on modified sol-gel method", Proc. SPIE 13287, Nineteenth National Conference on Laser Technology and Optoelectronics, 1328718 (11 October 2024); https://doi.org/10.1117/12.3038998

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