Zero-dispersion wavelength

Kudlinski, A., George, A. K., Knight, J. C., Rulkov, A. B., Popov, S. V. and Taylor, J. R. (2006). Zero-dispersion wavelength decreasing photonic crystal fibers for ultraviolet-extended supercontinuum generation. Opt. Express 14, 5715-22. 

DSF (dispersion shifted fiber) Single-mode optical fiber whose zero-dispersion wavelength is shifted from the normal 1.3 I m to 1.55-1 m low-loss wavelength region. 

RF radio frequency 0 zero material dispersion wavelength... 

From knowledge of the dependence of V and b on the fiber core diameter, A, and the dimensions of the depressed index cladding (if applicable), one may design a fiber whose wavelength of zero dispersion has been shifted to a desired value [3] [6]. 

Not only will the wavelength of zero dispersion be shifted, but at a local maximum, so introduced, the dispersion will vary little over a window of wavelengths. The dispersion behavior for actual fibers of varying designs is shown in Figure 6. Note that for seemingly similar index profiles, the behavior varies widely. This places strict requirements on the precision of fiber manufacture. 

Total dispersion is extremely sensitive to variations in the index profile of both the core and cladding parameters as illustrated by the behavior of fibers denoted W2 and W3. Though the diameters of their cores differ by only 0.1 pm, and the diameter of the depressed inner cladding even less, their dispersion behavior shows significant difference. Not only are the wavelengths of zero dispersion different, but W3 exhibits almost no dispersion over a window approximately 50 nm wide, centered at about 1530 nm. Clearly, this configuration is more desirable for operation at 1.5 pm than the fiber designated W2. 

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