2. Multiplexer (Mux)Multiplex (Mux) that is used to combine multiple channels with multiple light characteristics, such as.The coupling fiber glass (optical fiber coupler) is a combination of light from the light traveling in glass fiber directly, consider Figure 3, which is an example of coupling 2x2 fibre glass signal light, two channels with different wavelengths are transmitted into the fiber glass different lines together. When light travels through the coupling Two light wavelengths will be together after leaving the coupling. In practice, it may choose to use only one outgoing light. In the event that you want to include multiple-channel light it, coupling with the amount of input-side glass fiber, equal to the number of channels as required. By fiber glass is just one line. Glass fiber coupling devices, this is the kind of device (device pasive) is in the works.
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