Fiber Rotary Joint

The Fiber rotary joint is also known as the Fiber Rotary connector or the Fiber Optic Rotary Joint (FORJ). It is a device for transmitting optical signals between a rotating structure and a fixed structure, and stable transmission of optical signals can be achieved without physical contact.

The core component of the fiber rotator is the fiber, a filament made of high-purity glass or plastic that transmits light signals. The nature of total reflection within the fiber enables it to conduct light pulses along the fiber length almost losslessly, and these light pulses carry data information. In a rotary joint, the optical fiber is connected between the rotating part and the fixed part by a precise rotary connection mechanism. This rotary connection mechanism is designed to ensure that the fiber is correctly aligned while rotating, usually using fiber collimator or flexible fiber technology to ensure the continuity of the optical path. When the rotating part of the slip ring rotates, the optical fiber rotates with it, but the optical signal remains continuously transmitted through an alignment mechanism within the rotating joint.

Product characteristics

1, contactless transmission: Optical fiber rotary joint adopts contactless transmission mode to avoid wear and signal loss caused by physical contact.

2, high-speed stability: due to the characteristics of optical fiber transmission, the optical fiber rotary connector can achieve high-speed and stable optical signal transmission.

3, strong anti-interference: optical fiber transmission is not subject to electromagnetic interference, so the optical fiber rotary connector has excellent anti-interference performance.

4, bandwidth: Optical fiber transmission has an extremely wide bandwidth, can meet the needs of high-speed data transmission.

5, long life: due to contactless transmission and precision mechanical design, the service life of the optical fiber rotary joint is usually long.

When we buy Fiber rotary joint, we should pay attention to the following performance indicators

1, insertion loss: insertion loss is an important indicator to measure the performance of the optical fiber rotary joint, which represents the energy loss that occurs when the optical signal passes through the joint. When selecting, products with low insertion loss should be selected as far as possible to ensure the transmission quality of the optical signal.

2, rotation loss change: rotation loss change refers to the loss change of the optical signal through the joint during the rotation process. This metric is especially important for applications that require frequent rotations. When selecting, attention should be paid to products with small changes in rotation loss.

3, back loss: back loss refers to the light signal at the junction reflected back to the input energy loss. High return loss is helpful to reduce the interference of reflected light and improve the transmission quality of optical signal.

4, acceptable power: According to the requirements of the application scenario, choose the optical fiber rotary connector that can withstand the required power. For applications that need to transmit high-power optical signals, products that can withstand high power should be selected.

5, sealing performance: The sealing performance of the optical fiber rotary joint is essential to prevent medium leakage and maintain the stability of the internal environment. When selecting, attention should be paid to the sealing material and sealing structure of the joint to ensure that it has good sealing performance.

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