Optical: systems and elements – Optical amplifier – Correction of deleterious effects
Reexamination Certificate
2006-11-14
2006-11-14
Hughes, Deandra M. (Department: 3663)
Optical: systems and elements
Optical amplifier
Correction of deleterious effects
Reexamination Certificate
active
07136219
ABSTRACT:
The present invention has an object to provide an optical amplifier capable of realizing a good response characteristic in a wide frequency band, even when a population inversion state is formed by a pumping light supplied to an optical amplification medium and an ASE light generated in the optical amplification medium. To this end, in the optical amplifier according to the present invention, a delayed phase matching fiber in which a first fiber whose response speed is relatively low is arranged on the input side and a second fiber whose response speed is relatively high is arranged on the output side, is used as the optical amplification medium doped with a rare-earth element.
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Inagaki Shinya
Sasaki Keiko
Shimizu Takashi
Takeyama Tomoaki
Fujitsu Limited
Hughes Deandra M.
Staas & Halsey , LLP
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