Right angle of the incoming optical cable
The term "right-angle" refers to the 90° bend in the connector, which can be in one of four directions: Up, Down, Left, or Right. "The critical angle is given by: For a typical optical fibre, it says on the web that refractive index (n2) for cladding is higher than that of the glass core (n1) but it's only a few percent higher. Right-angle cable terminations are a great way to help route cables in tight spaces, relieve strain, and provide a more finished appearance to installations. Optical fibers or "light guides" are used most often to transmit light between the two locations. Transmission is usually over longer distances and at higher bandwidths (data transfer rates) than electrical cables. Why light? Frequencies ~1015 Hz Theoretical bandwidth limit: each oscillation is 1. Thus, if we define the relative permittivities ϵ r, f ≜ ϵ f / ϵ 0 for the fiber and ϵ r, c ≜ ϵ c / ϵ 0 for the cladding, then and Figure 8 1 2 illustrates total internal reflection in an optical.
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