Optical fiber amplifier and optical amplifier repeater

Details Optical fiber amplifier and optical amplifier repeater Optical fiber amplifier and optical amplifier repeater

H - Electricity

01

S

H01S 3/00 (2006.01) H01S 3/067 (2006.01) H04B 10/16 (2006.01) H04B 10/17 (2006.01) H04J 14/02 (2006.01) H01S 3/16 (2006.01)

Patent

CA 2136360

An optical fiber amplifier comprises a composite optical fiber for receiving signal light and excitation light, amplifying the signal light and emitting the amplified signal light, comprising at least two kinds of optical fibers serially coupled each having a glass composition selected from at least two kinds of rare- earth-doped glass compositions, and excitation means for generating excitation light and supplying it to the composite optical fiber. Then, an optical fiber amplifier which reduces the wavelength dependency of gain in various wavelength ranges in wavelength division multiplexing transmission or in optical analog transmission, and which maintains an energy efficiency for amplification, an optical fiber amplifier which makes a wavelength at a gain peak to a predetermined one in accordance with intensities of various input lights, and an optical amplifier repeater comprising this optical fiber amplifier are provided.

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