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Ohtsuki, T., Honkanen, S., Najafi, S. I., & Peyghambarian, N. (1997). Cooperative upconversion effects on the performance of er3+-doped phosphate glass waveguide amplifiers. Journal of the Optical Society of America. B, Optical Physics, 14(7), 1838-1845. Lien externe
Ohtsuki, T., Peyghambarian, N., Honkanen, S., & Najafi, S. I. (1995). Gain characteristics of a high concentration Er³⁺ doped phosphate glass waveguide. Journal of Applied Physics, 78(6), 3617-3621. Lien externe