Optical: systems and elements – Optical amplifier – Correction of deleterious effects
Patent
1996-05-28
2000-04-25
Moskowitz, Nelson
Optical: systems and elements
Optical amplifier
Correction of deleterious effects
359134, 359160, 359174, 359341, H04B 1012, H01S 330, G02B 626
Patent
active
060550929
ABSTRACT:
A multi-wavelength light amplifier includes a first-stage light amplifier which has a first light amplifying optical fiber amplifying a light input, a second-stage light amplifier which has a second light amplifying optical fiber amplifying a first light output from the first-stage light amplifier, and an optical system which maintains a second light output of the second-stage light amplifier at a constant power level. The first-stage and second-stage light amplifiers have different gain vs wavelength characteristics so that the multi-wavelength light amplifier has no wavelength-dependence of a gain thereof.
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Chikama Terumi
Kinoshita Susumu
Sugaya Yasushi
Takeda Miki
Fujitsu Limited
Moskowitz Nelson
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