Prism Gratings For Fiber Optic Multiplexing

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Abstract
Wavelength division multiplexing has been shown in recent years to be a viable approach to increasing the transmission capacity of fiber-optic communication links. The advantage offered by a dispersive component over some of the other WDM methods is a high channel capacity which avoids all cummulative losses. The use of a quarter pitch graded index rod results in a fully integrated device which is both compact and rugged, having no exposed optical interfaces which can become damaged. This paper concentrates on the GRINrod-prism grating approach with emphasis on test methods and on design parameters, as well as, fabrication techniques. The following topics related to these items will be discussed:

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