CWDM SFP Modules

CWDM SFP Modules

Multiplexing Fiber Optic Transmitters

CWDM, or Coarse Wavelength Division Multiplexing, is a scheme used to multiplex several streams of data onto a single fiber optic cable. This allows multiple 3G-SDI signals to be carried on a single fiber cable and extracted back into individual SDI signals at the receiving end.

CWDM Workflow

Multiple Signals, One Cable

Up to 18 separate 3G-SDI signals can be combined, or MUXed, onto a single fiber optic cable. This requires separate hardware, not supplied by AJA, to optically combine and decombine (DEMUX) the individual signals.


Low Power

Because CWDM is based around optical signals, the power requirements are extremely low. MUX and DEMUX operations are handled by unpowered devices and the individual transmitters and receivers operate with very little power needed.

Supported Wavelength Pairs


Each AJA CWDM transmitter supports two individual wavelengths, as shown in the chart below:

Wavelength #1

Wavelength #2

1271 nm

1291 nm

1311 nm

1331 nm

1351 nm

1371 nm

1391 nm

1411 nm

1431 nm

1451 nm

1471 nm

1491 nm

1511 nm

1531 nm

1551 nm

1571 nm

1591 nm

1611 nm