Optical: systems and elements – Optical amplifier – Correction of deleterious effects
Reexamination Certificate
2003-03-07
2008-10-21
Bolda, Eric (Department: 3663)
Optical: systems and elements
Optical amplifier
Correction of deleterious effects
C359S337400
Reexamination Certificate
active
07440171
ABSTRACT:
An optical amplifier utilizes two or more doped fiber segments or portions to achieve a lower noise figure and a higher saturation power than would be possible using any one of the doped fiber segments. Each doped fiber portion may be considered to be a doped fiber optical amplifier, and has a different doping level than each of the other doped fiber portions. Each such doped fiber portion has distinct amplitude gain and noise characteristics relative to each of the other doped fiber potions. The two or more doped fiber portions are coupled to each other in series and most often in a predefined order based on their relative amplitude gain, noise and saturation power characteristics.
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Huang Yonglin
Liu Jian
Lu Xuejun
Wang Zheng
Bolda Eric
Finisar Corporation
Workman Nydegger
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