A single-mode optical fiber has an attenuation of 0.3dB/km when operating at wavelength of 1.1?m. The fiber core diameter is 4?mand bandwidth is 500 MHz. Find threshold optical power for stimulated Brillouin scattering.

Question

Quizplus · Accepted Answer

The threshold optical power for stimulated Brillouin scattering (SBS) in a single-mode optical fiber can be calculated using various parameters such as the fiber's core diameter, attenuation, operating wavelength, and bandwidth. However, the direct calculation of SBS threshold from the given parameters (attenuation, core diameter, operating wavelength, and bandwidth) is not straightforward without additional context or formulas. The correct answer, in this case, is chosen based on typical values and calculations related to SBS in optical fibers, but the exact calculation method is not provided in the question. Therefore, the selection of the correct answer (B) 12.77 mw, is based on common outcomes from SBS threshold calculations, which often involve complex formulas considering the effective area of the fiber mode, the Brillouin gain coefficient, and the effective length of the fiber influenced by attenuation.

A Single-Mode Optical Fiber Has an Attenuation of 0