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slip rings are electromechanical devices that are used in a rotating electrical assembly in order to produce an electronic connection that runs continuously between a stationary object and a moving conductor. This enables the power or data to transfer electrical current to the spinning component.
A slip ring can be considered as the band having electrically conductive material that is mounted on the shaft. Despite the fact that it is enclosed itself, it is connected to the rotating assemblies via electrical connections or windings. Thus, the outer part remains in sliding contact continuously with stationary brushes or any other conductors.
There are different types of slip ring manufactured based on the use. The fiber optic slip ring can offer multiple solutions for the transmission of power. These are the type of optical slip rings that come with fiber joints, which act as the means of passing signals all across the rotating interfaces. It is particularly needed when there is a large amount of data or signals to be transferred. It comes with an intrinsic advantage of the fibers that go from end to end.
Types of fiber optic slip ring
The fiber optic slip ring comes with single channel and multiple channel options. Out of these types, the most cost-effective is the single channel and dual channel design. However, if there are more than two fibers that are present in the system, a multiplexing solution becomes available and helps to combine multi-channel onto one or more fibers in order to allow the use of the single or multiple channel fiber optic rotary joint.
Single mode fiber: A single mode fiber optic slip ring allows the propagation of the single medium of optical energy because of their small size and numerical aperture. This is the sole reason why they are capable of delivering high bandwidths at the wavelength that lies between 1270 nm to 1650 nm. It comes with a very specific mechanical alignment due to its small core size and the low numerical aperture. A standard single-mode fiber optic rotor joint is basically constructed for the application at wavelengths that varies between 1310 nm and 1550 nm.
Multi-mode fibers: A multi-mode fiber, on the other hand, comes with large core and high numerical aperture that can easily allow the propagation of multiple modes for the optical energy to pass. With the help of these features, it can allow a larger amount of light to be passed from the sources like the VCSELs and LEDs. However, it results in a higher reduction and dispersion. Due to its features like dispersion and attenuation, these are typically applied for the shorter datacom links. Basically, the multiple mode systems can be operated from 850 nm to 1300 nm.
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Features of fiber optic slip ring
The standard fiber optic slip ring comes with a number of features that are stated below:
.It comes in a compact size for the better operation of the slip ring in various systems.
.The design of these types of slip rings is ruggedized so that it can survive in a harsh environment.
.It is one of the most suitable options for the various configurations.
.It can also be available in custom designs.
