Please help me understanding the zero-dispersion wavelength in fibers.
I found this wiki-article on the topic. Accordingly: "In a single-mode optical fiber, the zero-dispersion wavelength is the wavelength or wavelengths at which material dispersion and waveguide dispersion cancel one another."
Does the zero-dispersion wavelength only exist in single mode fibers?
Does it depend on the length of the fiber? Will two single mode fibers with identical step-profile, but different length (5o km and 300 km) have the same zero-dispersion wavelength?
Thanks in advance