Fiber Evolution – Micro Cables

As 200𝜇m fiber is becoming increasingly commonplace, so are increased fiber counts in micro cables

Due to increasing usage of video related applications and the need of transportation of high amounts of Data in modern networks the demand for bandwidth and speed continues to increase. The only way to fulfill that demand is applying fiber in the future proof networks.

There are two trends in deploying fiber networks. Increasing low-count fibers cables to connect single users/subscribers or buildings. To distribute large volumes of information we see an increasing need for very high-count fiber cables. The average numbers of fibers in these high-count cables continue to increase. Cables featuring over 500 fibers in one cable are becoming increasingly common.

Adding more fibers in the cable and scaling up the fiber cable design is a common practice. However, for cables blown into ducts this up-scaling is not an option, because of limited duct space. Ducts are deployed in advance of the cable and the dimensions are fixed.

The micro-cables, a cable design with smaller dimensions than typically used, offer an economic advantage. To reduce the fiber cable diameter cable manufacturers started to apply 200 𝜇m instead of 250 𝜇m coated fibers. By using the smaller fiber, a 36% smaller design is the outcome.

Fig. 1 – Reducing cable size with 36%
Fig-2 – Doubling the number of fibers in a tube.










Comparing as an example a 288-fiber count cable can be reduced from 14 mm OD to 9.6 mm. In combination with the G.657 fiber and applying a micro bend –resistant coating the packing density in a tube can be higher with the 200 𝜇m fiber.

In fact, using this fiber the fiber-count for a given cable design can be doubled.

MS-6, MS-26, JIC-125, JIC-375, CSR-1575
MS-6, MS-26, JIC-125, JIC-375, CSR-1575

The Jonard mid-span tools, the MS-6 Mid Span Slitter and the MS-26 Large Mid Span Slitter, the CSR-1575 Cable Strip & Ring Tool, and the fiber strippers JIC-125 and JIC-375  are the tools which best fit the preparation of those Loose Tube Mini Cables in the FTTX applications. For more information on these products, check out our website and our Youtube for product videos on the MS-6MS-26CSR-1575, and JIC-375.



Written by Ger Segers, Managing Director of European Operations