Which wavelength has been specified for testing fiber-optic spans due to its sensitivity to macrobends and microbends?

Which wavelength has been specified for testing fiber-optic spans due to its sensitivity to macrobends and microbends?

• A. 1,310 nm
• B. 1,550 nm
• C. 1,625 nm
• D. 1,450 nm

Answer: (C)

The specified wavelength for testing fiber-optic spans due to its sensitivity to macrobends and microbends is 1,625 nm. This wavelength falls into the range that has been identified as particularly effective for detecting issues related to bending losses. At 1,625 nm, the testing can reveal more distinct signs of signal degradation caused by bends in the fiber, which often occurs in installations or when the fiber is improperly managed. Macrobends are large curves or loops in the fiber that can cause significant loss, while microbends are smaller deformations that can lead to more subtle yet critical signal integrity issues. Using this wavelength helps technicians identify potential problems in the fiber installation that might not be easily detected at other wavelengths. This wavelength is especially relevant for long-distance communication, as it ensures that the integrity of the signal remains intact throughout the fiber's lifespan. Therefore, 1,625 nm is the optimal choice for routine testing focused on maintaining the health of fiber-optic spans.

The specified wavelength for testing fiber-optic spans due to its sensitivity to macrobends and microbends is 1,625 nm. This wavelength falls into the range that has been identified as particularly effective for detecting issues related to bending losses.

At 1,625 nm, the testing can reveal more distinct signs of signal degradation caused by bends in the fiber, which often occurs in installations or when the fiber is improperly managed. Macrobends are large curves or loops in the fiber that can cause significant loss, while microbends are smaller deformations that can lead to more subtle yet critical signal integrity issues.

Using this wavelength helps technicians identify potential problems in the fiber installation that might not be easily detected at other wavelengths. This wavelength is especially relevant for long-distance communication, as it ensures that the integrity of the signal remains intact throughout the fiber's lifespan. Therefore, 1,625 nm is the optimal choice for routine testing focused on maintaining the health of fiber-optic spans.