Optical transmission apparatus with optical amplifiers

Details Optical transmission apparatus with optical amplifiers Optical transmission apparatus with optical amplifiers

2011-05-10

2011-05-10

Vanderpuye, Ken N (Department: 2613)

Optical communications

Multiplex

Wavelength division or frequency division

C398S079000, C398S083000, C398S173000, C398S175000

Reexamination Certificate

active

07941049

ABSTRACT:
An optical transmission apparatus including an optical amplifier for providing a high-power optical amplifier on the receive side, in which a wavelength of pumping light for an optical amplifier on the transmission side is suitably shifted to be different from a wavelength of pumping light for an optical amplifier on the receive side, pumping optical power for the optical amplifier on the transmission side is not all consumed in a doped fiber in amplification process, and remnant pump light that was left surplus is added by a wavelength multiplex coupler to the pumping light for the optical amplifier on the receive side, thereby enhancing a gain and light output without an increase in output power of the pumping light used for the optical amplifier on the receive side.

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H. Nakano, S. Sasaki, “Dispersion-Compensator Incorporated Optical Fiber Amplifier”, IEEE Photonics Technology Letters, vol. 7, No. 6, Jun. 1995.

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