Intramodal dispersion
In fiber-optic communication, an intramodal dispersion, is a category of dispersion that occurs within a single mode optical fiber.[1] This dispersion mechanism is a result of material properties of optical fiber and applies to both single-mode and multi-mode fibers. Two distinct types of intramodal dispersion are: chromatic dispersion and polarization mode dispersion.
Chromatic dispersion
In silica, the index of refraction is dependent upon wavelength. Therefore different wavelengths will travel down an optical fiber at different velocities. This implies that a pulse with a wider
Distributed Feedback Lasers
(DFB) are popular for communications because they have a single longitudinal mode with a very narrow line width.
See also
References
- ^ Senior, John M. (1992). Optical Fiber Communication Principles And Practice. Prentice Hall.
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