Which wavelength is most sensitive to macrobends and microbends in fiber optics?

The most sensitive wavelength to macrobends and microbends in fiber optics is 1,625 nm. This sensitivity is influenced by several factors, including the attenuation characteristics of the fiber at various wavelengths. As light propagates through the fiber, bends can disrupt the mode structure and cause increased loss, particularly in the longer wavelength range.

At 1,625 nm, the optical loss due to bends is more pronounced compared to shorter wavelengths. This is primarily because longer wavelengths experience different scattering mechanisms and have a higher likelihood of coupling into lossy modes when the fiber bends. This is especially important in applications where fiber is installed around tight corners or in configurations that introduce bends.

Understanding the sensitivity of different wavelengths to bending losses is crucial for designing and deploying fiber optic systems effectively, especially in environments where physical bending is unavoidable.