
Did you know that you can multiply your fibre optic capacity without installing another single cable? That’s the magic of CWDM/DWDM multiplexers—solutions that are saving Aussie businesses thousands in network expansion.
At Cloudtronics, we supply high-performance CWDM/DWDM multiplexers built for speed, reliability, and real-world Aussie conditions. Whether you’re running a growing ISP, datacentre, NBN-connected service, or just want to extend your fibre reach, our solutions deliver without the cost blowout.
Cloudtronics uses the entire CWDM band from 1270nm to 1610nm we call this full spectrum CWDM on either 1 or 2 fibres, need more capacity why not use DWDM combined with our tunable DWDM SFP+ in a unique Multirate 1~10G or 10~25G format. Cloudtronics offers online tools to test your link properties so you can get the solution right the first time.
What Are CWDM/DWDM Multiplexers?
Multiplexers let you send more data down the same fibre—they combine multiple light signals onto a single fibre using different wavelengths.
CWDM stands for Coarse Wavelength Division Multiplexing.
DWDM stands for Dense Wavelength Division Multiplexing.
Both are used to send more data through a single fibre optic line.
Here’s the difference:
- CWDM works well for shorter distances and is more affordable.
- DWDM is used for long-distance, high-bandwidth networks.
At Cloudtronics, we supply both. Our CWDM/DWDM Multiplexers are used by ISPs, data centres, and big enterprises across Australia.


Why Use CWDM/DWDM Multiplexers in Australia?
In Australia, long distances and infrastructure gaps make these technologies game-changers.
These multiplexers are perfect when:
- You’ve run out of fibre cables
- You want to scale without construction
- Your team needs easy-to-manage, plug-and-play solutions
CWDM is best for:
- Metro and access networks
- Budget-sensitive fibre expansion
- Passive optical networks (PON)
DWDM is ideal for:
- Long-haul connections (interstate or cross-campus)
- 10G, 40G, or 100G backbones
- High-density data transport in enterprise and telecom
Comparison table of CWDM vs DWDM use cases
Feature | CWDM | DWDM |
---|---|---|
Number of Channels | Up to 18 | Up to 80 or more |
Data Rates | Up to 10 Gbps | Up to 100 Gbps or more |
Channel Spacing | 20 nm | 0.4 nm or 1.6 nm |
Distance | Up to 70 kilometers | Up to Thousands of kilometers |
Cost | Lower | Higher |
Applications | Metro Networks, Access Networks | Long-Distance Networks |
Our CWDM/DWDM Multiplexers – Made for Real Aussie Conditions
- Our Cloudtron CWDM/DWDM filters are made-to-order based on client project requirements.
- Together with the project team, we can supply fully-fledged solutions for CWDM/DWDM networks including customised add/drop modules.
- They can be ordered with or without being assembled in a rackmount enclosure.
- The Cloudtron patchleads and pigtails are offered in commonly used connector types and fibre types.
Cloudtronics offers rugged, compact, and carrier-grade CWDM and DWDM multiplexers:
- Supports 4, 8, 16, or 18 wavelengths
- Fits in 1U rack-mount or wall-mount
- Works with all major brands of SFP/SFP+ modules
- Passive operation—no power needed
- Local support from our Aussie team
- Built for Australian conditions



All units are tested and shipped from our local facility. We also offer tech support across Australia.
Benefits You Can’t Ignore
- Boost fibre capacity up to 18x
- Cut costs on laying new fibre
- Zero downtime upgrades
- Plug & play installation
- Future-proof your network
Who Should Use It?
Internet Service Providers (ISPs)
Data Centres
Universities & Campuses
Government & Defence
Smart Cities & IoT Projects
Mining and remote site networks
They all use CWDM/DWDM Multiplexers to stay ahead, without overspending.
Ready to Multiply Your Fibre?
Talk to our engineers at Cloudtronics to choose the right CWDM / DWDM multiplexer for your network.
📧 sales@cloudtronics.com.au
🌐 Visit Our Store
📞 Call: 1800 876 642
With CWDM/DWDM Multiplexers, your network will be faster, future-proof, and financially smart.
Frequently Asked Questions – CWDM/DWDM Multiplexers
- What are CWDM/DWDM Multiplexers?
CWDM/DWDM Multiplexers are devices that transmit multiple signals over one fibre using different light wavelengths.
- What’s the difference between CWDM and DWDM Multiplexers?
CWDM/DWDM Multiplexers differ in range and capacity — CWDM is cost-effective for short distances, DWDM suits high-capacity, long-distance use.
- Where are CWDM and DWDM Multiplexers used?
CWDM and DWDM Multiplexers are used in ISPs, data centres, campuses, and long-haul networks to expand bandwidth.
- Do CWDM/DWDM Multiplexers need power?
No. Most CWDM/DWDM Multiplexers are passive and work without any power supply.
- Are CWDM / DWDM Multiplexers compatible with all fibre modules?
Yes, CWDM/DWDM Multiplexers support standard CWDM and DWDM SFP/SFP+ transceivers.
- How many channels can CWDM/DWDM Multiplexers support?
Depending on the model, CWDM/DWDM Multiplexers support 4 to 40+ channels.
- Can CWDM/DWDM Multiplexers be upgraded later?
Yes, CWDM / DWDM Multiplexers are scalable—you can add more channels as needed.
- Are CWDM / DWDM Multiplexers easy to install?
Absolutely. CWDM / DWDM Multiplexers are plug-and-play with no software setup.
- Why should I use CWDM / DWDM Multiplexers?
CWDM / DWDM Multiplexers boost fibre capacity without installing new cables, saving cost and time.
- Where can I buy CWDM / DWDM Multiplexers in Australia?
You can buy from Cloudtronics Pty Ltd.