Angular Misalignment, in relation to cables, is a type of optical loss that occurs due to the end face angles of two fibers being misaligned. This misalignment occurs when two fibers are not precisely aligned along the same optical axis. It is an important factor to consider when connecting two optical fibers. The angular misalignment between two fibers causes a decrease in signal strength and an increased loss of light.
The loss of light is caused by the spreading of light beams over a wider surface area. The wider the angle of misalignment, the more power is lost due to the spreading of the light. This spreading is known as divergence loss. This type of loss is common in single-mode fibers, but it can also occur in multi-mode fibers.
The amount of loss due to angular misalignment depends on the numerical aperture (NA) of the fiber and the angle of misalignment. The higher the NA, the higher the loss. The lower the NA, the lower the loss. The maximum angle of misalignment that can be tolerated depends on the NA of the fiber.
The angular misalignment between two fibers can be corrected by using an angular alignment device. This device consists of two components: an angular alignment fixture and an alignment tool. The angular alignment fixture holds the two fibers in place so that the fibers can be aligned. The alignment tool is used to adjust the angle of the fibers to achieve the correct alignment.
Angular misalignment is an important factor to consider when connecting two optical fibers as it can cause significant losses in signal strength. It is important to ensure that the fibers are aligned properly in order to minimize losses. Using an angular alignment device can help to ensure that the fibers are aligned correctly.