Category Archives: CWDM & DWDM Solutions

Passive CWDM vs DWDM: What’s the Difference?

Posted on September 14, 2018 by Admin

WDM (Wavelength Division Multiplexing) is a commonly used technology in optical communications. It is often deployed to join multiple wavelengths onto a single fiber. In the WDM system, there are two main types: Coarse Wavelength Division Multiplexing (CWDM) and Dense Wavelength Division Multiplexing (DWDM). … Continue reading →

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Understanding Ports on CWDM MUX/DEMUX

Posted on August 31, 2018 by Admin

WDM (Wavelength Division Multiplexing) is a commonly used technology in optical communications. CWDM and DWDM MUX/DEMUX are two important components in WDM systems, which are often deployed to join multiple wavelengths onto a single fiber. There are some ports on CWDM and DWDM MUX/DEMUX like … Continue reading →

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How to Build a Passive DWDM Network?

Posted on June 9, 2017 by Admin

DWDM technology has been regarded as an ideal solution for long haul optical transmissions. Usually the common passive system is CWDM but not DWDM. However, passive DWDM network also can offer perfect performance in some cases. This post focuses on … Continue reading →

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How to Place EDFA for DWDM Distance Extension?

Posted on May 26, 2017 by Admin

Erbium doped fiber amplifier (EDFA) is the latest state-of-the-art solution for amplifying optical signals in optical transmission systems. It has become a key enabling technology and the dominant amplification device deployed in optical networks. Together with DWDM technology, EDFA has … Continue reading →

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DWDM Topology Design: How to Make it Right?

Posted on May 20, 2017 by Admin

Network expansion spurs the demand for faster data transmission and higher capacity over the network. In this case, DWDM emerges as a cost-effective solution to handle these issues, working efficiently to combine multiple wavelengths together and sent them over one … Continue reading →

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CWDM Network: Technology Overview and Common Applications

Posted on May 4, 2017 by Admin

Fiber exhaust is an inevitable problem constantly faced by carriers since the demand for higher speed bandwidth never ceases. The ever-improving wavelength division multiplexing (WDM) technology nowadays is increasingly used to boost network capacity, enabling carriers to deliver more services … Continue reading →

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Implementing Passive CWDM to Upgrade Access PONs

Posted on April 28, 2017 by Admin

Coarse Wavelength Division Multiplexing (CWDM) has proven itself to be a preferred approach to elevate the bandwidth of optical access networks, offering quicker and simpler installation and lower overall cost. Passive CWDM, which requires no electrical power at all, is … Continue reading →

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Hybrid CWDM-DWDM System Boosts Your Network Capacity

Posted on April 19, 2017 by Admin

Should I choose a medium capacity but more cost-effective CWDM solution, or to adopt the cost-prohibitive DWDM approach with comparably enhanced capacity? This is a problem that consistently faced by WDM technology users. The wrong decision, however, may inevitably lead … Continue reading →

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CWDM and DWDM for Metro Networks: How to Make it Economical?

Posted on March 9, 2017 by Admin

Fiber exhaust still appears to be a common problem faced by most metro (or metropolitan) networks. Although the cost of fiber optic cable is consistently dropping, the trenching, labor, and other installation costs towards optical fiber stay rather high. This … Continue reading →

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CWDM vs DWDM, Which Option Is Best for You?

Posted on August 26, 2015 by Admin

In the field of telecommunications, data center connectivity, and video transport, fiber optic cabling is highly desirable. However, the reality is that the fiber optic cabling is no longer an economical or feasible choice to implement for each individual service. … Continue reading →

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