Optical amplifier with erbium-doped fiber.

摘要

The optical amplification gain of an optical amplifier consisting of an optical amplifier unit and a single-mode erbium-doped fiber can be optimized when the length of the fiber L in meters and the optical absorption in dB/meter of the fiber per unit length at a wavelength of 1.53 <0>m satisfy the relationship that L ô y is in the range from 70 to 170 dB by appropriately selecting the doping level of the glass with erbium and the length of the fiber. <IMAGE>