Fibre Optic Systems
G.652.D vs G.657.A1 and A2: ITU-T Fibre Standards and Bend-Insensitive Fibre
What ITU-T G.652.D and G.657 mean for single mode fibre, how tight each can bend, whether they mix, and how they relate to OS2.
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Fibre Optic Systems
Fibre Termination: Fusion Splicing vs Pre-Terminated vs Field-Fit Connectors
Fusion splicing, field-fit connectors or pre-terminated fibre? How each one works, typical loss, the tools you need on site, and when to use each.
Fibre Optic Systems
Fibre Optic Loss Budget: How to Calculate Insertion Loss for Any Link
Learn how to calculate fibre optic insertion loss and build a loss budget. Standard cable, connector and splice allowances, IEEE channel limits for 10G to 100G,…
Fibre Optic Systems
Armoured vs Unarmoured Fibre Optic Cable: When Do You Actually Need It?
Armoured fibre optic cable adds a metal protective layer beneath the outer jacket, giving it resistance to crushing, rodent damage, and mechanical impact that standard unarmoured…
Fibre Optic Systems
Why Fibre Connectors Need Cleaning — and How to Do It Properly
Contamination on a connector end face is the single most common cause of poor fibre link performance — more common than a bad splice, a damaged…
Fibre Optic Systems
Pre-Terminated Fibre Optic Cable: When to Use It and How DTECH’s Service Works
Pre-terminated fibre optic cable is factory-assembled, factory-tested, and delivered ready to install — connectors already fitted, polarity already verified, insertion loss already measured and within specification…
Fibre Optic Systems
Fibre Insertion Loss and Return Loss Explained
Insertion loss and return loss are the two parameters that define how well a fibre optic link will actually perform — and they are the two…
Fibre Optic Systems
Why Fibre Optic Prices Have Increased in 2026
If you have priced fibre optic cable in the last six months and been surprised by what you found, you are not alone. From late 2025…
Fibre Optic Systems
DTECH Fibre Optic Systems: Everything You Need for a Complete Installation
DTECH supplies a complete fibre optic cabling system — from bulk backbone cable through pre-terminated assemblies, patch leads, pigtails, adaptors, splice accessories, and patch panels. Every…
Fibre Optic Systems
Fibre Optic Cable Construction: Tight Buffered vs Loose Tube
Tight buffered and loose tube are the two fundamental fibre optic cable constructions. Every fibre backbone cable — whether multimode or single mode, internal or external,…
General Purpose
Internal vs External Data Cable: What’s the Difference and How to Choose
One of the most common specification errors in structured cabling installations is using standard internal cable on a route that passes outside — through an external…
Fibre Optic Systems
OM4 vs OM5 Fibre: What’s the Difference and Which Should You Specify
When OM5 was introduced in 2016 it generated considerable interest — a new multimode fibre grade promising wideband capability, more data over fewer fibres, and a…
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