17 Jan Fusion Splicing and Mechanical Splicing – The Difference

When it comes to fibre termination, there are two alternatives that can be used. One being Fusion Splicing, and the other being Mechanical Splicing. Like everything else, both these alternatives have their own advantages and disadvantages. Let’s us delve deeper into each of these techniques and gain an understanding regarding which one is better!
When compared to mechanical splicing, fusion splicing is fast becoming the preferred option for fiber termination.


Fusion Splicing is a method in which the designated machine aligns the two fibre ends in a precise manner, and subsequently fuses them using an electric arc. Here, the installer ensures a flawless connection. Depending on the need, Fusion Splicing can be performed individually, with just one fibre at a time, as well as on a mass level using as many as 12 fibres per operation. When it comes to Mechanical Splicing, it essentially holds the two fibres together such that the electric current can easily pass through. Here, it is important to note that the splicing is not permanent but temporary in nature.

The purchase of fusion splicer tool is a costly affair as against that of a mechanical splicer, which is why many data centre installers shy away from investing in fusion splicers. However, the variable cost per splice for Fusion Splicing ranges from Rs. 30 to Rs. 100, while that in case of Mechanical Splicing is between Rs. 600 to Rs. 1,800. This makes the former much more cost-effective than the latter.
In addition, the significant reduction in the cost of splicer tools as well as the easy availability of affordable low-cost rental options has resulted in a significant increase in the dependence on splicer tools.

Then again, insertion loss for Fusion Splicing is often less than 0.1 dB, while that for Mechanical Splicing ranges from 0.2 dB to 0.75 dB, which makes Fusion Splicing the preferred alternative for most installers. For the uninitiated, insertion loss is the loss of signal power resulting from the insertion of a splice in the optical fibre.

What You Must Know?
Owing to the aforementioned information, you may be inclined to opt for Fusion Splicing. However, before you choose to do so, you should consider the following aspects –
In order to protect the splice against moisture and other environmental issues, it is imperative that you make use of protective heat shrink splice sleeves. However, for these sleeves to be effective, you must store them correctly.
Slack Management
In order to ensure the termination of damaged connectors, it is important that the 250µm, 900µm or ribbon fibre are provided with proper slack management.
In order for you to enjoy a hassle-free experience with splicer tools.
For all you know, Pelorus can help you make the most of Fusion Splicing, by reducing initial costs and maximising system uptime, making it ideal for you to resolve all your data centre challenges with great ease!

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