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Multiplexer Knowledge
- Why is Multiplexing Needed in Data Communication Systems?
- What is Concept of Multiplexing in Telephone System?
- What is Digital TV Frequency?
- Outlook of the WDM Networks
- DWDM Technical Overview
- CWDM Technical Overview
- How to Activate Cable Modems?
- How to Install a Fiber Optic Modem?
- How do I Choose a Best Fiber Modem?
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Applications
Multiplexers can be used to connect PBX, Hot line and other devices of network from central site to user site through fiber optical cable.
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SOPTO Products
- Fiber Optic Transceiver Module
- High Speed Cable
- Fiber Optical Cable
- Fiber Optical Patch Cords
- Splitter CWDM DWDM
- PON Solution
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- PCI-E Network Card
- Network Cables
- Fiber Optical Adapter
- Fiber Optical Attenuator
- Fiber Media Converter
- PDH Multiplexers
- Protocol Converter
- Digital Video Multiplexer
- Fiber Optical Tools
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Performance Feature
High integration desig
Low power consumption
Good EMC, EMI
Stable and Reliable
Multiplexer Knowledge
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Introduction of Add-drop Multiplexer
An add-drop multiplexer (ADM) is an important element of an optical fiber network. A multiplexer combines or multiplexes several lower-bandwidth streams of data into a single beam of light. An add-drop multiplexer also has the capability to add one or more lower-bandwidth signals to an existing high-bandwidth data stream, and at the same time can extract or drop other low-bandwidth signals, removing them from the stream and redirecting them to some other network path. This is used as a local "on-ramp" and "off-ramp" to the high-speed network.
ADMs can be used both in long-haul core networks and in shorter-distance "metro" networks, although the former are much more expensive due to the difficulty of scaling the technology to the high data rates and dense wavelength division multiplexing (DWDM) used for long-haul communications. The main optical filtering technology used in add-drop multiplexers is the Fabry–Pérot etalon.
A recent shift in ADM technology has introduced so-called "multi-service SONET/SDH" (also known as a multi-service provisioning platform or MSPP) equipment which has all the capabilities of legacy ADMs, but can also include cross-connect functionality to manage multiple fiber rings in a single chassis.
These new devices can replace multiple legacy ADMs and also allow connections directly from Ethernet LANs to a service provider's optical backbone. An emerging variety of ADMs that is becoming popular as the carriers continue to invest in metro optical networks are reconfigurable optical add-drop multiplexers (ROADMs).
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