The different types of fused WDM modules are based on Fused Biconical Taper (FBT) technology. The technology is used to combine and separate optical signals transmitted on different wavelengths. The combination and separation of optical signals provide the first level of bandwidth expansion for a network by increasing a fiber’s signal carrying capacity.

Other than this, the different WDM modules are also used to add additional functionality to the network such as network status monitoring. The best thing is that WDM modules provide a cost-effective way to minimize loss and maximize wavelength isolation.

The types of WDM modules are:

  • 1480/1550nm, 980/1060nm, and 980/1550nm fused WDM is used in optical fiber amplifiers
  • 1310/1550nm used in bi-directional or CWDM optical communication systems

The fused WDM modules in detail

1310/1550nm fused WDM module

This module combines 1310 nm and 1550nm signals into one fiber or separates 1310nm and 1550 signals into two fibers in an optical fiber system. Other than this, the module is used to double the fiber transmission capacity or enable the bi-directional; communication using a single fiber.

1310/1550 high resolution fused WDM module

This module combines 1310 nm and 1550nm signals into one fiber or separates 1310nm and 1550 signals into two fibers in an optical amplifier. As the name suggests, the 1310/1550 high resolution fused WDM module works better than the 1310/1550nm fused WDM module.

980/1060nm fused WDM module

This module combines 980nm and 1060nm signals into one fiber or separates 980nm and 1060nm signals into two fibers. Primarily, the 980/1060 fused WDM module is used for optical amplifiers.

980/1550 fused WDM module or Pump WDM

This module combines 980nm and 1550nm signals into one fiber or separates 980nm and 1550nm signals into two fibers. Unlike other fused WDM modules, the 980nm/1550nm fused WDM is for EDFA, the L-band.

1480/1550nm fused WDM module or Pump WDM

This module combines 1480nm and 1550nm signals into one fiber or separates 1480nm and 1550nm signals into two fibers. Very similar to the 980/1550nm fused WDM module, the 1480/1550nm fused WDM module is used for EDFA, the -band.

The performance depends on the fused WDM module you choose from the ones listed above. If you choose the wrong module for the wrong application, the result will not be as expected. The functioning of the communication system and other applications will get interrupted and the overall mechanism will suffer the consequences.

The best is to seek help from professionals before choosing the fused WDM module and connect with one of the best manufacturers like DK Photonics.