About CWDM

What are SAMIM CWDM and its function in the broadcast industry?

Deciding the wavelength signals into smaller sections has high-effects on increasing the performance and the capacity of the systems. This division is called Wavelength Division Multiplexing or WDM. Multiplexers enable you to grow your network capabilities without even adding a simple optical fiber. One of the important advantages of WDM is that it’s not related to the bit rates and the protocols. This means that every single channel from the optical fiber, can carry every transmitting format and therefore, economize your understructure department costs.

The responsibility of the multiplexers is to convert several inputs to one output and to transmit it through an optical fiber link. Conversely, the role of demultiplexers is to separate the signal at the end of another optical fiber and to convert an input optical fiber link to several fiber outputs. The end capacity of a WDM fiber 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, these multiplexers 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.


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

Samim 18 Channel Optical Fiber Multiplexer/Demultiplexer known as OMD-1800 brand, enables you to transmit optical signals with different wavelengths through an optical fiber link. This multiplexer/demultiplexer can merge up to 18 signals with different wavelengths into an optical fiber, or transform 18 signals with different wavelengths from an optical fiber to 18 optical fiber channels. Also, it can create every combination of inputs and outputs on its 18 channels and can support a two-way link.

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

2- Supporting the ITU-TG694 standard is one of the other Samim multiplexers’ features. This standard which has been 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 the company’s designed sub racks and can easily be placed in these sub racks.

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 fictional features of Samim multiplexers is the coverage of several signals on one optical fiber link. This feature enables you to transmit several audio and visual channels with different wavelengths on one optical fiber and minimize your costs by a great deal.