Critical Values

Abstract

The expression for q, whether considered as a function of ψ or of ϕ is particularly wild. The expression for t₀ in terms of these same variables is only slightly tamer. In this chapter, we will seek values of these independent variables that result in zeros or poles for q and t₀, as well as the optical parameters associated with the module. This investigation will do more than provide a map of points at which a module undergoes a profound morphological change. These points are boundaries for regions in which the module is reasonably well behaved. A knowledge of these regions is particularly important in the coupling problem. We will begin by defining some properties of the module that effect its coupling. In what follows, the work involving the imaginary case is largely that of MERCADO [5.1].