Multiplexers, Splitters and Circulators

By: Optelian  09-12-2011
Keywords: Transmission Equipment

Optelian’s multiplexers combine multiple signals onto a single fiber. Multiplexers are highly reliable, optical DWDM, CWDM, and WDM devices. Splitters and circulators are also available.

Optelian offers standard 40 and 80-channel DWDM as well as 8-channel CWDM and DWDM mutliplexers. Most models include a wideband 1310 or 1550 nm port for overlaying new channels on existing circuits and a faceplate monitor port for testing and installation. Active CWDM systems are hardened for outside plant applications.

Custom configurations and channel plans are supported with standard lead times and no additional set up or assembly charges by leveraging Optelian’s unique manufacturing capabilities. Customizable options include:

As shown in the diagram to the right, for xWDM applications, signals from SONET/SDH, Ethernet, or other transmission equipment are converted to the required wavelengths through muxponders, transponders or SFP/XFPs used in the transmission equipment before being combined by the multiplexer.

Optelian’s 80-channel DWDM is a modular system. Once the first 40 wavelengths are used, a second 40-channel multiplexer can be added for future growth without disturbing traffic on the original channels.

A few of the many available multiplexer models are shown below.

Keywords: Transmission Equipment

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SFPs and XFPs

A wide variety of SFPs and XFPs are available to support all kinds of applications including reach extension, wavelength conversion for CWDM and DWDM systems and for multi-mode to single-mode conversion. OEM units are available for installation in non-Optelian transmission equipment.



In addition to aggregating eight GbE inputs into one 10 GbE output, the multi-purpose MPX-81-EXO may also be used as an Ethernet switch with provider bridge VLAN capability. Muxponders use pluggable transceivers (SFPs on the client side and XFPs on the line side) so they can be used in a wide variety of applications. Increase bandwidth by aggregating multiple lower bit rate transmission client signals into one higher bit rate line signal.



Any system can be extended for an unlimited distance by adding regenerators mid-span, as the 3R function of the regenerator effectively cleans up the signal from chromatic and polarization mode dispersion. Regenerators can be used with amplifiers; amplifiers giving hundreds of kilometers of reach and regenerators placed when necessary to clean up the signal.