Passive fiber

Aluminum coated passive fluorine doped fibers

LASSARD produces quartz optical fibers and fiber optic cables based on them: The range includes fibers with a core diameter from 4 to 1000 µm, length up to 1 km, single-mode and multimode; with preservation of polarization; with acrylate, aluminum and copper coating; with double cladding (DC). The diameter of the reflective cladding of the fibers is 110 µm to 1100 µm, the protective coating is 140 µm to 1500 µm.

LASSARD offers cables based on passive quartz fibers doped with fluorine and coated with aluminum for operation in vacuum conditions.

Optical fibers are used for making patch cords with lengths from 1 m to 50 m (up to 100 m on request) with SMA-905, D-80, FC and ST connectors. Possible types of fiber end polishing: FLAT, PC, UPC (APC polishing is optional).

Double-sided fiber drawing tower

Preforms

Preforms are heated in a furnace to 1700–2200 °C to soften.

Feedback system

The system monitors the fiber diameter and controls the temperature and drawing speed.

Height

The height of the tower is 8 meters.

Double-sided design

Double-sided design allows to draw 2 times more fiber.

Protective layer

A thin protective layer is applied to the fiber, which prevents cracking and sticking of the fiber.

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