THORLABS Vytran LFS4100, User Manual

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LFS4100 Chapter 3: Description
Rev B, July 24, 2018 Page 3
Chapter 3 Description
3.1. Introduction
Thorlabs' Vytran
®
LFS4100 is a dedicated process tool for splicing standard, large-diameter, and specialty fibers.
Designed for volume production of fiber assemblies, it is intended for manufacturers that want the splicing
performance of Vytran’s proven filament fusion, multi-function splicing, and glass processing products from a
stand-alone, easy-to-use tool.
The LFS4100 is designed to perform high-quality fusion splicing of fibers with claddings from Ø125 um to Ø1.25
mm. The system consists of a filament-based heater, precision stages with multi-axis control, a microscopic high-
resolution CCD imaging system, and a desktop computer. The filament heater has a wide temperature tuning
range that extends up to 3000 °C, which makes it possible to fuse and process various fiber types and sizes. The
multi-axis stages precisely control and align the fibers for high quality splicing. The imaging system displays a
magnified fiber image with sub-micron resolution; the camera can display views of both the fiber sides and fiber
ends. Using these images, the XY and rotation stages automatically manipulate the fibers to achieve optimum
positioning and ensure high-quality, low-loss splicing. The LFS4100 also has the ability to rotate fibers, making it
possible to align PM fibers, eccentric-core fibers, and non-circular fibers.
3.2. Filament Fusion Splicing
Thorlabs’ unique filament fusion technology provides a consistent, reliable method of making high-strength, low-
loss splices. Precision control of the fusion process is achieved by purging the splice region with an inert gas and
using a resistive graphite or iridium filament to supply the thermal input necessary for fiber fusion. Because the
fusion heat source is isolated for the environment, filament fusion splicing is not dependent upon ambient
conditions. The controlled conditions inside the system in combination with constant power control ensure
repeatable performance splice after splice.
3.3. Features

Automated splice head

XY alignment blocks with rotary capability

Camera tower with ring illuminator
.