Temperature dependence of chromatic dispersion in various types of optical fiber

The temperature dependence of chromatic dispersion is examined for various types of fiber. Its coefficient is found to depend strongly on the dispersion slope. Dispersion-flattened fiber has a significantly low coefficient of $-0.0005\left(\mathrm{ps}/\mathrm{nm}/\mathrm{km}\right){/}^{°}\mathrm{C}$, compared with $-0.0038\left(\mathrm{ps}/\mathrm{nm}/\mathrm{km}\right){/}^{°}\mathrm{C}$ for large-core nonzero dispersion-shifted fiber. Transmission lines with low dispersion slopes consisting of pure silica core fiber and dispersion-compensating fiber also exhibit low coefficients of less than $-0.001\left(\mathrm{ps}/\mathrm{nm}/\mathrm{km}\right){/}^{°}\mathrm{C}$ because of their compensating effects.