Theoretical modeling of erbium-doped fiber amplifiers with excited-state absorption
- Optical Fiber Group, Department of Electronics and Computer Science, University of Southampton, Highfield, Southampton SO9 5NH, UK (GB)
Numerical solution of a general rate-equation model of an erbium-doped fiber amplifier highlights several important features of the device. A difference in strong-signal gain between copropagating and counterpropagating signal pump schemes in the presence of pump excited-state absorption is predicted, and this is confirmed by experiment. The detriment in the noise figure previously associated with counterpropagating schemes for only small-signal conditions is shown to be similar for strong signals, corresponding to a power-amplifier operating regime. In addition, a correction to the noise figure is given for the limit of a low-gain amplifier.
- OSTI ID:
- 5522611
- Journal Information:
- Optics Letters; (USA), Journal Name: Optics Letters; (USA) Vol. 14:19; ISSN 0146-9592; ISSN OPLED
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ABSORPTION
ALLOYS
AMPLIFICATION
CHALCOGENIDES
COMMUNICATIONS
EFFICIENCY
ELECTROMAGNETIC RADIATION
EMISSION
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
ERBIUM ADDITIONS
ERBIUM ALLOYS
EXCITED STATES
FIBERS
GAIN
INFRARED RADIATION
KINETICS
LASERS
MINERALS
NEAR INFRARED RADIATION
OPTICAL FIBERS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
QUANTUM EFFICIENCY
RADIATIONS
RARE EARTH ADDITIONS
RARE EARTH ALLOYS
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SOLID STATE LASERS
STIMULATED EMISSION
420300* -- Engineering-- Lasers-- (-1989)
ABSORPTION
ALLOYS
AMPLIFICATION
CHALCOGENIDES
COMMUNICATIONS
EFFICIENCY
ELECTROMAGNETIC RADIATION
EMISSION
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
ERBIUM ADDITIONS
ERBIUM ALLOYS
EXCITED STATES
FIBERS
GAIN
INFRARED RADIATION
KINETICS
LASERS
MINERALS
NEAR INFRARED RADIATION
OPTICAL FIBERS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
QUANTUM EFFICIENCY
RADIATIONS
RARE EARTH ADDITIONS
RARE EARTH ALLOYS
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SOLID STATE LASERS
STIMULATED EMISSION