Tag Archives: fiber optic enclosure

Tap Cassette for Better Real-Time Network Monitoring

Effective network monitoring is necessary for a most fiber optic network in today’s telecommunication networks. There are two questions should be considered for fiber optic network monitoring. One is whether the whole signal traffic can be effectively monitored without missing any information, the other one is the transmission quality and the fiber network should not be disturbed. TAP (traffic access point) is usually added to the network for network monitoring. To meet the need of effective real-time monitoring, high performance network and high density cabling, an advanced passive device is commonly used, which is known as tap cassette, or optical tap cassette, or fiber tap.

Tap Cassette Offers 100% Copy of Network Data

The optical tap patch cassettes provided in the market usually use LGX cassette designs. The outside look of an LGX optical tap cassette is just like an MTP LGX cassettes. However, the inner design of tap patch cassette is different. The design of tap patch cassette is easy to understand by its function—making a 100% copy of network data without affecting transmission. Thus there is a port for connecting the monitor device and port for transmission.

tap patch cassette

The above picture shows the inner structure of a 2-MTP to 6-LC 40G fiber tap. On the front panel of the fiber tap cassette, there are 6 duplex LC ports for dual-way data transmission. The network traffic is split off for monitoring and analysis in a specific split ratio by a fiber splitter. Thus, On the rear panel, there are two 12-fiber MTP ports, one for data transmission and the other is used to link with monitoring devices. This simply explained how the passive tap patch cassette is being used for monitoring without disturbing the network traffic. In addition, this type of fiber patch cassette can be directly installed in the standard unit rack which has low space requirement and can meet the demands of high density cabling.

Which Tap Cassette Fit Your Application?

Optical tap cassette can be divided into various type according to fiber type, data rate, port type and the above mentioned split ratios. The functions of the fiber taps provided in the market are nearly the same. But how to judge which one is best for your applications? The above-mentioned factors can help you make the decision.

Split Ratios of Tap Patch Cassette

What is the split ratios of fiber optic cassette? as the mentioned, the optical data are split off into two parts in a specific split ratio for transmission and tapping/monitoring. Which means there will be a light loss if using a tap patch cassette. For instance, if an optical tap cassette has a split ratio of 70:30, the 70% power light will be used for transmission and the 30% part will be used for monitoring (shown in the following picture). In simple, the fiber tap split ratios are the percentage of light left in the transmission link versus the percentage that is used for monitoring.

fiber tap split radio

As there is a light loss if using a tap patch cassette, the installers should first considerate split ratio of the tap cassette during selection. The transmission distance and light source should also be considered to determine the split ratio of the fiber tap cassette. The split ratios of the optical tap cassettes usually range from 50:50 to 95:5, among which optical tap cassettes with a split ratio of 50:50, 60:40 and 70:30 are the most commonly used.

Fiber Type, Data Rate and Connector of Tap Cassettes

Except for the split ratio, fiber type, data rate and connector type should also be considered according to the specific application. There are 40G fiber tap and 100G fiber tap which utilizing MTP port and LC port. Tap patch cassettes with multimode fiber and single-mode fiber are all available.

optical tap cassette

How to Deploy Optical Tap Cassette in Network

Adding an optical tap cassette is very easy. Here takes the example of 40G optical tap cassette (2xMTP to 6xLC Duplex) during application (shown in the following picture). Usually, an MTP to 6 duplex LC fanout fiber cable is being used to connect the optical tap cassette to the monitor devices. These fiber tap cassettes are usually deployed between the fiber link and can be used stand alone or deployed in fiber optic enclosure for better cable management.

deploy fiber tap in network


Tap patch cassette is a low-cost and easy-to-use passive device which can support real-time monitoring of the network with great accuracy. Kindly Contact fs@sales.com for or visit TAP LGX CASSETTE more details about fiber tap cassettes.

How to Make Full Use of Fiber Optic Enclosure

Fiber optic enclosure is now being widely used in data center to provide high density and safe cabling environment in data centers or server room. With the cabling density of the data center becoming higher and higher, fiber optic enclosures are asked to provide more functions and more flexible cabling environment for various applications. A previous blog post of mine—Which Fiber Patch Enclosure Fits Your Data Center Application—has introduced various types of the fiber optic enclosures that are commonly used. Selecting the right fiber optic enclosure is necessary. The right use of fiber optic enclosure is also very important. This post will offer details about how to make full use of fiber optic enclosure in data center for flexible and manageable cabling environment.

Important Accessories for Flexible Cabling

When you buy an empty fiber optic enclosure, no matter it is a slide-out one or fixed one, there are many accessories like screws and grommet. The front panel of the fiber optic enclosure might not be loaded. There are several accessories that can directly determine the way you use a fiber optic enclosure. Taking the example of a 1U slide-out fiber enclosure as an example (shown in the following picture), the following will introduce three popular ways to use fiber enclosures with different accessories. The accessories required are separate, splice tray & FAP (fiber adapter panel), slack spool & FAP and HD MTP cassette.

1U fiber optic enclosure

Fiber Optic Enclosure for Fiber Splicing Joints

Accessories required for fiber splicing joints in this fiber optic enclosure are splice tray and FAPs. The splicing tray can be installed on the slide-out drawer of the fiber enclosure for fiber splicing joints storing and cabling. An additional multi-fiber pigtail is also required to be fusion spliced with the input fiber optic cable. Then this fiber pigtail will be connected to the FAPs installed on the front panel. The following picture shows the loaded and connected fiber optic enclosure for fiber optic splicing joints.

fiber optic enclosure for splicing joints

Fiber Optic Enclosure for Patch Cord Connections

Patch cording connection fiber optic enclosure is very common. Just install two slack spools and four fiber adapter panels on this fiber enclosure. It could provide an easy-to-manage environment for fiber patch cables. The two spools installed in the slide-out drawer can help to manage these fiber patch cords The following picture shows a breakout fiber patch cable installed in the fiber optic enclosure and being well organized by the spools.

fiber optic enclosure with spools

Fiber Optic Enclosure for MTP Interface to LC Interface Transferring

With the deployment of the 40G/100G network, the transferring between 40G/100G MTP interfaces and 10G LC interfaces is requires. To minimize the installation time and ensure the connection quality, MTP cassettes are widely used. This 1U rack mount fiber optic enclosure can hold up to 4 HD MTP cassettes. The following picture shows the loaded fiber optic enclosure with four HD MTP cassettes which are connected by several input MTP trunk cables.

fiber enclosure with MTP cassettes


Using different accessories fiber optic enclosures can meet diverse cabling environment requirements. The above mentioned three methods are the most commonly used ones. Kindly visit FS.COM or contact sales@fs.com for more details about fiber optic enclosure, if you are interested.