Selenium semiconductor core optical fibers

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Abstract

Phosphate glass-clad optical fibers containing selenium (Se) semiconductor core were fabricated using a molten core method. The cores were found to be amorphous as evidenced by X-ray diffraction and corroborated by Micro-Raman spectrum. Elemental analysis across the core/clad interface suggests that there is some diffusion of about 3 wt % oxygen in the core region. Phosphate glass-clad crystalline selenium core optical fibers were obtained by a postdrawing annealing process. A two-cm-long crystalline selenium semiconductor core optical fibers, electrically contacted to external circuitry through the fiber end facets, exhibit a three times change in conductivity between dark and illuminated states. Such crystalline selenium semiconductor core optical fibers have promising utility in optical switch and photoconductivity of optical fiber array.

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Tang, G. W., Qian, Q., Peng, K. L., Wen, X., Zhou, G. X., Sun, M., … Yang, Z. M. (2015). Selenium semiconductor core optical fibers. AIP Advances, 5(2). https://doi.org/10.1063/1.4908020

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