What is the function of DWDM?

What is the function of DWDM?

Dense wavelength-division multiplexing (DWDM) is an optical fiber multiplexing technology that is used to increase the bandwidth of existing fiber networks. It combines data signals from different sources over a single pair of optical fiber, while maintaining complete separation of the data streams.

What is transponder in fiber optic?

In optical fiber communications, a transponder is the element that sends and receives the optical signal from a fiber. A transponder is typically characterized by its data rate and the maximum distance the signal can travel.

What is a WDM transponder?

WDM transponder is an optical-electrical-optical (O-E-O) wavelength converters that are designed to perform an O-E-O operation to convert wavelengths of light. Figure 1 shows bidirectional transponder operation (the transponder is located between a client device and a DWDM system).

How does a DWDM mux work?

DWDM fiber works by combining and transmitting multiple signals simultaneously at different wavelengths on the same fiber. In effect, one fiber is transformed into multiple virtual fibers.

What is DWDM service?

Simply explained, DWDM technology is based on the combination and transmission of multiple optical signals, with dedicated wavelengths simultaneously using the same fiber cable. This means that DWDM uses single mode fiber to carry multiple light waves of different frequencies.

What are the main components of a DWDM system?

A DWDM system generally consists of five components: Optical Transmitters/Receivers, DWDM Mux/DeMux Filters, Optical Add/Drop Multiplexers (OADMs), Optical Amplifiers, Transponders (Wavelength Converters).

What is a network transponder?

A transponder is a wireless communications, monitoring, or control device that picks up and automatically responds to an incoming signal. The term is a contraction of the words transmitter and responder. Transponders can be either passive or active.

What is Transponder and Muxponder?

Transponders are used to enable point-to-point connections over long distances when the client rate matches the optical wavelength. In cases where the client rates are lower than the optical wavelength, a muxponder is used to multiplex multiple sub-rate clients onto the line interface.

Where is transponder required?

Transponder Requirements All aircraft operating in Class A, B, and C airspace, or above 10,000 feet MSL, must have an operating Mode C transponder. Operating transponders with Mode C are also required within 30 miles of a Class B airport.

How does a transponder work?

A transponder will send an identifying coded signal in response to a transmitted interrogation from a ground-based radar station. An air traffic controller can then view the identified blip on a screen and know who it is and provide direction to the flight crews maintaining adequate separation with other blips.

What is lambda in DWDM?

More precisely, DWDM uses multiple uniquely colored lasers (or frequencies of light) to transmit multiple signals. The wavelength of each different colored laser is called the lambda. Thus, DWDM supports multiple lambdas.

What is DWDM muxponder?

In optical networks, muxponder technology is used to aggregate multiple services into a single wavelength/uplink using OTN mapping. Efficient and flexible aggregation layer of multi-protocol/multi-rate services into a single wavelength/uplink trunk.

What are types of transponder?

Basically, there are two types of transponders. Those are Bent pipe transponders and Regenerative transponders.