OWB frequencies are which of the following?

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Multiple Choice

OWB frequencies are which of the following?

In fiber optic backbones, transmission uses specific optical windows. The two main wavelengths used are around 850 nm for multimode fiber (short-reach, high bandwidth) and around 1550 nm for single-mode fiber (long-reach, low loss). These windows exist because silica fiber has the lowest attenuation and favorable dispersion properties in those ranges, making it practical for most outside plant installations. The 900 nm option isn’t a standard window for these links, and using just 1550 nm covers long-distance needs, while 850 nm covers short-range multimode applications. Therefore, the correct choice is the combination of 850 and 1550.

In fiber optic backbones, transmission uses specific optical windows. The two main wavelengths used are around 850 nm for multimode fiber (short-reach, high bandwidth) and around 1550 nm for single-mode fiber (long-reach, low loss). These windows exist because silica fiber has the lowest attenuation and favorable dispersion properties in those ranges, making it practical for most outside plant installations. The 900 nm option isn’t a standard window for these links, and using just 1550 nm covers long-distance needs, while 850 nm covers short-range multimode applications. Therefore, the correct choice is the combination of 850 and 1550.

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