The importance of the type of optical fiber polishing machine and the importance of accessories

Optical fiber polishing is a critical process that involves the removal of surface imperfections and the creation of a smooth and flat end-face on optical fibers. The end-face quality of the fiber is critical to the overall performance of the fiber optic system. The polishing process is performed using a polishing machine and accessories, which play a significant role in the success of the process. In this article, we will discuss the importance of the type of optical fiber polishing machine and the importance of accessories.

Types of Polishing Machines

Rotary Polishing Machines

Rotary polishing machines are the most common type of machine used for polishing optical fibers. These machines use a rotating fixture that holds the fiber while it is being polished. The fixture typically has several grooves that hold the fiber at different angles to ensure that the end-face is polished evenly.

Rotary polishing machines are available in manual and automated versions. Manual machines require the operator to manually rotate the fixture while the fiber is being polished. Automated machines, on the other hand, use a motor to rotate the fixture, which makes the process faster and more consistent.

Pneumatic Polishing Machines

Pneumatic polishing machines are another type of machine used for polishing optical fibers. These machines use compressed air to drive a polishing head that holds the fiber. The polishing head moves back and forth across the end-face of the fiber, creating a smooth and flat surface.

Pneumatic polishing machines are generally faster than rotary polishing machines and can be used for both single-mode and multimode fibers. However, they require a clean and dry air supply to avoid contamination.

Importance of Accessories

Polishing Pads

Polishing pads are an essential accessory for optical fiber polishing machines. The pads are made of a material that is soft enough to prevent damage to the fiber, but hard enough to remove surface imperfections. The most common materials used for polishing pads are diamond, silicon carbide, and alumina.

The choice of polishing pad material will depend on the type of fiber being polished and the desired end-face quality. Diamond pads are the most commonly used for single-mode fibers, while silicon carbide pads are more commonly used for multimode fibers.

Polishing Films

Polishing films are another essential accessory for optical fiber polishing machines. These films are made of a thin layer of abrasive material that is applied to a plastic backing. The films are used to polish the end-face of the fiber to create a smooth and flat surface.

Polishing films are available in a range of grit sizes, from coarse to fine. The choice of grit size will depend on the initial surface roughness of the fiber and the desired end-face quality.

Polishing Plates

Polishing plates are used to hold the polishing pads or films in place during the polishing process. The plates are typically made of metal or plastic and are designed to fit the specific polishing machine being used.

The plates must be cleaned and inspected regularly to ensure that they are free from contaminants that can scratch the fiber. Contaminants such as dust, oil, and debris can cause damage to the end-face of the fiber and affect its performance.

Conclusion

In conclusion, the type of optical fiber polishing machine and the accessories used are critical factors that determine the success of the polishing process. Rotary and pneumatic polishing machines are the most common types of machines used for optical fiber polishing. Polishing pads, films, and plates are essential accessories that must be carefully chosen based on the type of fiber being polished and the desired end-face quality. The success of the polishing process depends on the proper selection of the machine and accessories, as well as the skill and experience of the operator.