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- http://www.arkoptics.com/passive-multiplexer/
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A passive multiplexer in most networks consists of a mux and demux optical component. The mux combines, or multiplexes, wavelengths onto a fiber. The demux on the other end of the connection splits, or de-multiplexes, the connections.
In DWDM system, DWDM mux demux is two indispensable modules. Mux (Multiplexer) is a module at the transmitter end that brings several data signals together for transporting over a single fiber, while Demux (Demultiplexer) is a module at the receiver end that separates the signals that come together and passes each channel to an optical receiver.
CWDM mux demux (Coarse Wavelength Division Multiplexer/Demultiplexer) is a flexible, low-cost solution that enables the expansion of existing fiber capacity. CWDM multiplexer is for combining signals together, while demultiplexer is for splitting signals apart.
A polarization-maintaining (PM) WDM filter is a small device used to multiplex PM signals while maintaining the output polarization. When you are using highly efficient systems, PM fibers and PM signals play a very critical role in ensuring the desired efficiency.
Fiber Patch Cord & Cable Assembly, often called fiber patch cable, fiber jumper, or fiber patch lead, is a length of fiber cable that terminated with fiber optic connectors (LC, SC, MTRJ, ST and etc.) at each end. The connectors allow fiber optic patch cord to be rapidly connected to an optical switch or other telecommunications/computer device.