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About Fiber Optic Amplifiers
Fiber optic amplifiers re-amplify an attenuated signal without converting the signal into electrical form. Common fiber optical amplifiers include erbium doped fiber amplifiers (EDFA), Raman fiber amplifiers, and silicon optical amplifiers (SOA). Fiber amplifiers are developed to support dense wavelength division multiplexing (DWDM) and to expand to the other wavelength bands supported by fiber optics. EFDA fiber optic amplifiers function by adding erbium, rare earth ions, to the fiber core material as a dopant; typically in levels of a few hundred parts per million. The fiber is highly transparent at the erbium lasing wavelength of two to nine microns. When pumped by a laser diode, optical gain is created, and amplification occurs.
When light is transmitted through matter, part of the light is scattered in random directions. A small part of the scattered light has frequencies removed from the frequency of the incident beam by quantities equal to the vibration frequencies of the material scattering system. Raman fiber optic amplifiers function within this small scattering range. If the initial beam is sufficiently intense and monochromatic, a threshold can be reached beyond which light at the Raman frequencies is amplified, builds up strongly, and generally exhibits the characteristics of stimulated emission. This is called the stimulated or coherent Raman effect.
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Engineering Web: Fiber Optic Amplifiers
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Fiber/Optic | Transimpedance Amplifiers Clock and Data... Fiber/Optic Clock and Data Recovery/Retiming Fiber/Optic New Products Design Tools See Analog Devices, Inc. Information |
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Copper to Fiber Media Converters, Fiber Converters, Fiber... Video/Audio Distribution Amplifiers Fiber Optic Ethernet Transceivers See Versitron, Inc. Information |
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Fiber-Optics.info | Optical Fiber Transmission using Light... fiber-optics.info Fiber Optic History Fiber Optic Articles Fiber Optic Glossary Fiber Optic Community |
Part Numbers for Fiber Optic Amplifiers
| Part # | Distributor | Manufacturer | Product Category | Description |
|---|---|---|---|---|
| E3A2-XCM4D | Digi-Key | Omron Electronics Inc-IA Div | Sensors, Transducers | AMP RELAY-OUT TIMER FIBER-OPTIC |
| E32-D32 | Digi-Key | Omron Electronics Inc-IA Div | Sensors, Transducers | CABLE FIBER OPTIC AMPLIFIERS |
| E3X-A11-8 2M | Digi-Key | Omron Electronics Inc-IA Div | Sensors, Transducers | FIBER-OPTIC AMP RECEIVER |
| E3A2-XCM4T | Digi-Key | Omron Electronics Inc-IA Div | Sensors, Transducers | AMP RELAY-OUT TIMER FIBER-OPTIC |
| E32-D24 | Digi-Key | Omron Electronics Inc-IA Div | Sensors, Transducers | CABLE FIBER OPTIC AMPLIFIERS |
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