Optical cross connects (OXCs): In a mesh topologies devices are needed at nodes to route signal from the in port to an specific out port. Types of OXCs: electronic, optical and wavelength selective.
Transceivers: Combination of a transmitter and a receiver.
Optical add-drop multiplexer(OADM): is a device used in wavelength-division multiplexing systems for multiplexing and routing different channels of light into or out of a single mode fiber (SMF).
Transponders: A wavelength converser.
Muxponder (multiplexed transponder): performs basic time division multiplexing of lower rate signals into a higher rate carrier.
Optical Amplifiers: amplifies an optical signal directly without the need to convert into electronic signal before.
Erbium Doped Fiber Amplifiers (EDFAs): most used optical amplifiers applied for the Conventional, or C-band, from approximately 1525 nm – 1565 nm, and the Long, or L-band, from approximately 1570 nm to 1610 nm.
A DWDM terminal multiplexer
An intermediate line repeater
Intermediate optical terminal, or optical add-drop multiplexer
DWDM terminal demultiplexer
Optical Supervisory Channel (OSC)
(SOA) Integrated Semiconductor Optical Amplifier Semiconductor optical amplifiers (SOAs) are amplifiers which use a semiconductor to provide the gain medium.
(SOI) Silicon-On-Insulator.
(SOJ) Small-Outline J-lead.
(ROADM) Reconfigurable Add-Drop Multiplexing: is a form of optical add-drop multiplexer that adds the ability to remotely switch traffic from a WDM system at the wavelength layer.
(AWG) Arrayed Waveguide Grating
(EML) Element Management Layer
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