SBS Threshold Dependence on Pulse Duration in a 2053 nm Single-Mode Fiber Amplifier
| Autor: | Ali Abdulfattah, Lawrence Shah, Joshua Bradford, Martin Richardson, Alex Sincore, Nathan Bodnar |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
business.industry Single-mode optical fiber Pulse duration 02 engineering and technology 01 natural sciences Atomic and Molecular Physics and Optics 010309 optics Brillouin zone Laser linewidth Wavelength 020210 optoelectronics & photonics Optics Brillouin scattering Fiber laser 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Optoelectronics Laser power scaling business |
| Zdroj: | Journal of Lightwave Technology. 35:4000-4003 |
| ISSN: | 1558-2213 0733-8724 |
| Popis: | Stimulated Brillouin scattering (SBS) is the first nonlinear effect that limits power scaling of narrow linewidth fiber lasers. Nonlinearities typically have a reduced impact when operating at longer wavelengths. However, the SBS gain is considered wavelength independent. To investigate this further, a pulsed 2053 nm source with MHz-linewidth is amplified to >100 W peak powers in single-mode, thulium-doped fiber. The SBS thresholds were measured while varying the pulse duration. Analyzing the SBS threshold measurements suggests that the peak Brillouin gain coefficient is ∼12.2 pm/W with a spontaneous Brillouin bandwidth of ∼17.5 MHz in the passive single-mode fiber at 2053 nm. While the peak Brillouin gain coefficient is comparable to those reported at shorter wavelengths, the spontaneous Brillouin bandwidth is significantly narrower. This indicates that long wavelength sources can inhibit the onset of SBS more readily than short wavelength sources. |
| Databáze: | OpenAIRE |
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