Fiber Optic Wiki

What is DWDM Mux and Demux?

April 11, 2012

Dense Wavelength Division Multiplexing Multiplexer/Demultiplexer (DWDM Mux/Demux) are to increase more than one optical channel technology the transmission capacity into a single fiber.

What is Insertion loss and return loss?

April 11, 2012

Insertion loss means due to components insert and produce load power loss in the transmission system. The load of power is different between the components insert and don’t insert. Then, the difference is the insertion loss.

Bulkhead Attenuator

April 11, 2012

Bulkhead attenuator also called fixed fiber-optic attenuators. Bulkhead attenuators used in fiber optic systems may use a variety of principles for their functioning. Preferred attenuators use either doped fibers, or miss-aligned splices. Inline style attenuators are incorporated into patch cables.

PDH

April 10, 2012

The Plesiochronous Digital Hierarchy (PDH) is a technology used in telecommunications networks to transport large quantities of data over digital transport equipment such as fibre optic and microwave radio systems. The term plesiochronous is derived from Greek plēsios, meaning near, and chronos, time, and refers to the fact that PDH networks run in a state where different parts of the network are nearly, but not quite perfectly, synchronised.

Protocol Converter

April 10, 2012

A Protocol Converter is a device used to convert standard or proprietary protocol of one device to the protocol suitable for the other device or tools to achieve the interoperability. Protocols are software installed on the routers which convert the data formats, data rate and protocols of one network into the protocols of the network in which data is navigating.There are varieties of protocols used in different fields like Power Generation, Transmission & Distribution, Oil & Gas, Automaton, Utilities, AMR, and Remote Monitoring applications. The major protocol translation messages involve conversion of data messages, events, commands and time synchronization.

TDMOIP

April 10, 2012

In computer networking and telecommunications, TDM over IP (TDMoIP) is the emulation of time-division multiplexing (TDM) over a packet switched network(PSN). TDM refers to a T1, E1, T3, or E3 signal, while the PSN is based either on IP or MPLS or on raw Ethernet. A related technology is circuit emulation, which enables transport of TDM traffic over cell-based (ATM) networks.

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