On the Effect of Low Temperatures on the Maximum Output Power of a Coherent Erbium Doped Fiber Amplifier
| Autor: | Jeremy Oudin, Alaeddine Abbes, Alizee Dubois, Alice Odier, Julien Le Gouët, Philippe Perrault |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Silica fiber chemistry.chemical_element FOS: Physical sciences Physics::Optics 02 engineering and technology Laser pumping Applied Physics (physics.app-ph) 01 natural sciences 7. Clean energy law.invention 010309 optics Erbium 020210 optoelectronics & photonics law Fiber laser 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Fiber business.industry Amplifier Physics - Applied Physics Laser Atomic and Molecular Physics and Optics Core (optical fiber) chemistry Optoelectronics business Optics (physics.optics) Physics - Optics |
| Popis: | The influence of low temperatures on the performance of a high-power single-frequency fiber laser amplifier is evaluated with a numerical simulation. Cooling the fiber can allow to take advantage of both higher damping of the acoustic waves in the silica glass, and higher laser efficiency. We first report on the measurement of the stimulated Brillouin scattering (SBS) threshold in a silica fiber as a function of the temperature from 300~K down to 77~K. We then present the measurements of small-signal absorption and gain spectra of an erbium doped alumino-phosphosilicate fiber, at room temperature and liquid nitrogen temperature. Based on these data, we derive a numerical study of the combined effects of cooling on the SBS threshold and the amplifier efficiency, and conclude on the interest of this technique for SBS limited high power Er doped fiber amplifiers (EDFA). The temperature increase caused by the pump laser in the fiber core is also addressed. |
| Databáze: | OpenAIRE |
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