Compare stimulated Brillouin and stimulated Raman scattering in optical fibers, and indicate the way in which they may be avoided in optical fiber communications. The threshold optical powers for stimulated Brillouin and Raman scattering in a single-mode fiber with a long 8 µm core diameter are found to be 190 mW and 1.70 W, respectively, when using an injection laser source with a bandwidth of 1 GHz. Calculate the operating wavelength of the laser and the attenuation in decibels per kilometer of the fiber at this wavelength.
Compare stimulated Brillouin and stimulated Raman scattering in optical fibers, and indicate the way in which they may be avoided in optical fiber communications. The threshold optical powers for stimulated Brillouin and Raman scattering in a single-mode fiber with a long 8 µm core diameter are found to be 190 mW and 1.70 W, respectively, when using an injection laser source with a bandwidth of 1 GHz. Calculate the operating wavelength of the laser and the attenuation in decibels per kilometer of the fiber at this wavelength.
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Transcribed Image Text:Compare stimulated Brillouin and stimulated Raman scattering in optical fibers, and
indicate the way in which they may be avoided in optical fiber communications.
The threshold optical powers for stimulated Brillouin and Raman scattering in
a single-mode fiber with a long 8 µm core diameter are found to be 190 mW and
1.70 W, respectively, when using an injection laser source with a bandwidth of
1 GHz. Calculate the operating wavelength of the laser and the attenuation in
decibels per kilometer of the fiber at this wavelength.
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