About CWDM Technology

SAMIM CWDM and its functions in the broadcast industry?

Often, a fiber optic signal line can be divided into smaller parts with the same wavelengths or be merged in a larger set of a main signal stream. This is called Wavelength Division Multiplexing or WDM. The technology enables you to grow your media transmission capabilities without even adding a simple optical fiber link. An important advantage of WDM is that it is not dependent on the bit rates and the network protocols. This means that every channel from the optical fiber can carry any data format and therefore, economizes your infrastructure costs.

Multiplexers can convert several inputs to a single output and transmit it through an optical fiber link, while the role of demultiplexers is to split the fiber optic signal and convert it to several fiber outputs in different wavelengths. The capacity of a WDM system depends on the ability to put the optical channels close to the wavelength domain. The channel spacing in CWDM technology is 20 nm apart, so it can support 18 wavelength channels in a 1270 nm to 1610 nm spectrum grid.

Expanding the sources in the signaling of the broadcast field, CWDM can support the transmission of audio and visual sources to the other streams without having to maximize the optical fiber links’ understructure, and consequently, they have been used to transmit streaming programs to different other streams.

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What are the features of SAMIM 18 Channel Multiplexer/Demultiplexer?

It is known as OMD-1800 which enables you to transmit optical signals with different wavelengths through an optical fiber link. Also, it can merge up to 18 signals with different wavelengths into a single optical fiber line or separate 18 signals with different wavelengths from an optical fiber into 18 optical fiber channels. OMD-1800 creates every combination of inputs and outputs on its 18 channels and supports a two-way link.

1- Samim multiplexers with electrical to optical and optical to electrical transformers, support signals including 3G/HD/SD-SDI, DVB/ASI, and Ethernet and use them for audio and visual signaling, economize costs.

2- Supporting the ITU-TG694 standard is one of the other Samim multiplexers’ features. This standard which was set in 2003 by ITU (International Telecommunication Union), supports wavelengths up to 20 nm spacing.

3- Samim CWDM card is a passive optical multiplexer/demultiplexer, and this means that Samim OMD-1800 does not need an electrical power source. Also, this card is so mechanically compatible with Samim rack frames and can easily be placed into them.

4- Also as you may know, due to the low weight, high quality, and higher certainty of the optical fibers, using them in telecommunication systems has been expanded, and it is also one of the most functional tools in the broadcasting market. One of the functional features of Samim CWDM multiplexer is the coverage of several signals on a single optical fiber link. This feature enables you to transmit several audio and visual channels with different wavelengths on one optical fiber and minimizes your costs.