Multiplexer Knowledge

In the modern society, video multiplexer plays an important part in most public places and special events to monitor and record the real-time videos.

Using a WDM (Wavelength Division Multiplexing) to expand the capacity of fiber to carry multiple client interfaces is a very convenient way because the physical fiber optic cabling is not cheap.

As a result of rapid development of data services, network convergence speed accelerated MAN has become a hotspot of network construction

The utilization of fiber optic cables for communication has opened up gates for communication multiplexing technologies that increase the capabilities at minimum costs.

A multiplexer, sometimes referred to a multiplexor or simply a mux, is an electronic device that selects from several input signals and transmits to one or more output signals, can be considered as a multiple-input, single-output switch.

Software-defined networking (SDN) is an approach to networking in which control is decoupled from hardware and given to a software application called a controller.

The figure below is a schematic diagram of an SDH ring structure with various tributaries.

The next step towards formation of a complete STM-N signal is the addition of a pointer indicating the start of the POH. The unit formed by the pointer and the virtual container is referred to as the administrative unit (AU-n) or tributary unit (TU-n).

Filter-based Wavelength Division Multiplexer (Filter WDM, or FWDM) is based on the mature membrane filter technology, with a wide channel bandwidth, low insertion loss, high channel isolation degrees and high environmental stability and reliability.

Before the introduction of CWDM multiplexer, it is necessary to mention the CWDM technology. Originally, the term “coarse wavelength division multiplexing” (CWDM) was fairly generic, and meant a number of different things.

In telecommunications and computer networks, multiplexing (also called muxing) is a technique by which multiple analog message signals or digital data streams are combined into one signal more than a shared medium.

Multiplexing is the technology that is able to combine multiple communication signals together in order for them to traverse an otherwise single signal communication medium simultaneously.

CWDM is a low-cost WDM transmission technology for metro access layer. Principle, CWDM may be the utilization of the optical multiplexer to different wavelengths regarding signals multiplexed with a single optical fiber for transmission

With the introduction from the fiber optic communication industry by the challenges from the growing need for bandwidth and speed requirements.

It’s no surprise that OTN has many similarities to SDH, as many of its characteristics were taken from previous technologies when SDH was defined.

When you need to carve up an expensive resource (such as an active fiber route) into pieces, multiplexing is the way to go.

The STM-n frame structure is best represented as a rectangle of 9 x 270xN. The 9xN first columns are the frame header and the rest of the frame is the inner structure data (including the data, indication bits, stuff bits, pointers and management).

Sopto is a company that has rich experience in producing and developing fiber optic multiplexer systems, and has several successful commercial product lines for video/data multiplexing in Remotely Operated Vehicles (ROVs).

Software-defined Networking (SDN) is an emerging architecture that is dynamic, manageable, cost-effective, and adaptable, making it ideal for the high-bandwidth, dynamic nature of today's applications.

The use of fiber optic cables for communication has exposed doors for multiplexing communication technologies that maximize the capabilities at minimal cost.