CWDM vs. DWDM: What’s The Difference?

As fiber optic solutions improve with time, new systems are being created to solve modern-day communications problems that you might face at work or home. One such solution is wavelength division multiplexers which have the potential to transform your data exchange capacities and are typically used by cable networks to distribute their services across your neighborhood.

Here’s a comparison of two kinds of wavelength division multiplexers that are growing common across various industries.

Channel ABS Pigtailed Module Simplex CWDM OADM East or Westel ABS Pigtailed Module Simplex CWDM OADM East or West


How Wavelength Division Multiplexers Work

Simply put, a wavelength division multiplexer directs several light signals from multiple fiber optic fibers onto one, using an input coupler. This coupler then gives a single output to the wavelength division multiplexer, which in turn distributes the light waves into various wavelengths at different angles. A prism-like device called a grating is used for the separation of the waves.

The two multiplexers being compared here are Coarse Wavelength Division Multiplexers (CWDM) and Dense Wavelength Division Multiplexers (DWDM).

1. Coarse Wavelength Division Multiplexers (CWDM)

CWDM sends various signals at different wavelengths through fiber optic cables to get you greater bandwidth. It’s considered a cheaper yet efficient way of widening frequencies for low-capacity usage across relatively short distances.

Unlike DWDMs, CWDMs are wavelength-based, have more spacing, use better range for frequencies, and can be powered by LEDs and lasers, given their short-range compatibility. An advantage of CWDMs is that their space requirements are more compact and are thus ideal for startups and small up-and-coming business ventures.

Band Filter with Small Size Plastic ABS Box


2. Dense Wavelength Division Multiplexers (DWDM)

Defined by frequencies, DWDMs offer greater capacity than CWDMs and allow for light signals to be amplified for greater reach. A feature that you might find quite useful is that DWDMs use cooling lasers that improve the overall performance of your fiber optics.

DWDMs also afford you communication over longer distances without compromising on the data and are considered the largest capacity system possible to obtain. All of these features suggest that DWDMs are ideal for fast-growing businesses.

To place your orders for a DWDM module or buy other fiber optic tools for sale, get in touch with the experts at Fibermart. You’ll find several fiber optic appliances to add to your home or business venture, such as OM3 and OM4 cables, field assembly connectors, and various others.

Categories: Uncategorized

Leave A Reply

Your email address will not be published.