What is passive CWDM?

The passive CWDM is an implementation of CWDM that uses no electrical power. It separates the wavelengths using passive optical components such as bandpass filters and prisms. CWDM Mux/Demux is the most commonly used device in the passive CWDM system.

What are the two different types of WDM?

There are two main types of technology for wavelength division multiplexing (WDM): coarse (CWDM) and dense (DWDM). They both use multiple wavelengths of light on a single fiber, but differ in their spacing of the wavelengths, number of channels and ability to amplify the multiplexed signals.

What is the applications of CWDM systems?

CWDM Applications CWDM is being used in cable television networks, where different wavelengths are used for the downstream and upstream signals. In these systems, the wavelengths used are often widely separated. For example, the downstream signal might be at 1310 nm while the upstream signal is at 1550 nm.

What is the range of CWDM and DWDM?

DWDM, supports up to 80 simultaneous wavelength channels, with each of the channels only 0.8nm apart. CWDM technology offers a convenient and cost-efficient solution for shorter distances of up to 70 kilometers. For distances between 40 and 70 kilometers, CWDM tends to be limited to supporting eight channels.

What is the benefit of CWDM over DWDM?

Is DWDM a multiplexer?

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 the maximum distance covered by CWDM?

Transmission Reach Unlike DWDM system, CWDM is unable to travel unlimited distance. The maximum reach of CWDM is about 160 kilometers but an amplified DWDM system can go much further as the signal strength is boosted periodically throughout the run.

What is a CWDM and DWDM multiplexer?

Omnitron Optical CWDM and DWDM Multiplexers and Optical Add/Drop Multiplexers are protocol and rate transparent allowing up to 18 CWDM or 24 DWDM wavelengths to be transported across the same fiber link.

How many iconverter CWDM MUX modules can be installed in one chassis?

iConverter CWDM MUX modules can be installed in an active 19-Module chassis, a passive 19-Module CWDM Compact Chassis that allows two chassis to be connected to support up to 38 CWDM modules, in a 1-Module Passive Chassis, or any other active/passive iConverter chassis. OmniLight 5-Channel half-size LGX CWDM MUX/DEMUX modules for single fiber.

What is the speed-CWDM and DWDM series?

The SPEED-WDM Series includes a variety of passive CWDM and DWDM modules with different numbers of channels. The SPEED-CWDM Series is available in 5, 8, 9 and 16 CWDM wavelengths per system card.

How many CWDM wavelengths can be transmitted over one fiber optic cable?

The CWDM five and nine wavelengths multiplexers have a cascading port that allows them to be extended by another eight CWDM wavelengths without interruption of the running operation. Through the use of DWDM modules, up to 64 or 96 DWDM channels can be transmitted over one fiber optic.