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Modeling and gain properties of Er 3 + and Pr 3 + codoped fiber amplifier for 1.3 and 1.5 μ m windows

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Abstract

A detailed analysis is presented of the possibility of an Er3+ and Pr3+ codoped fiber as an amplifier for 1.3 and 1.5μm transmission windows. The numerical models with 10101480nm and 9861480nm pump lasers are proposed, the rate and power propagation equations are solved numerically, and the dependence of the gains at 1310, 1530, and 1600nm windows on pump wavelength and power, active ion concentrations, and signal wavelength are calculated. The results show that with 10101480nm pumps of 200100mW and with fixed Pr3+ and Er3+ concentrations at 8.0×1024 and 2.0×1024  ionsm3, the signals at 1310 and 1530nm windows may be equally amplified with a gain of 26.0dB in the active fiber with a length of 7.0m, and with a 1480986nm pump power of 100300mW and Pr3+ and Er3+ ion concentrations of 2.0×1024 and 2.0×1024  ionsm3, the signals at 1310 and 1530nm may be nearly equally amplified with a gain of 8.0dB in a 10.0m long active fiber.

© 2009 Optical Society of America

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