What’s CWDM?

Coarse wavelength division multiplexer (CWDM Mux/Demux) utilizes thin film coating technology and proprietary design of non-flux metal bonding micro optics packaging. It provides low insertion loss, high channel isolation, wide pass band, low temperature sensitivity and epoxy free optical path.

CWDM is a low-cost WDM transmission technology for the access layer of the metropolitan area network. In principle, CWDM uses an optical multiplexer to multiplex optical signals of different wavelengths into a single optical fiber for transmission. At the receiving end of the link, the mixed signal in the optical fiber is decomposed into different wavelengths by means of an optical demultiplexer. Signal, connected to the corresponding receiving device.

WDM Wavelength Division Multiplexer, WDM multiplexer

CWDM Coarse Wavelength Division Multiplexer, sparse wavelength division multiplexer, also known as coarse wavelength division multiplexer

DWDM Dense Wavelength Division Multiplexer, Dense Wavelength Division Multiplexer

DWDM (Dense Wavelength Division Multiplexing) is undoubtedly the technology of choice for today’s fiber applications, but its high price makes many operators who are not well-off. Is there or can you enjoy wavelength division multiplexing at a lower cost? Faced with this demand, CWDM (Sparse Wavelength Division Multiplexing) came into being.

Post time: Mar-19-2018
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