Optical fiber beam expanding contact based on self-focusing lens

Abstract

The invention discloses an optical fiber beam expanding contact based on a self-focusing lens. The optical fiber beam expanding contact comprises a ceramic sleeve with a lens and a pin flange with a ceramic pin. The ceramic sleeve with the lens comprises the self-focusing lens and the ceramic sleeve. The self-focusing lens is adhered in the left end of the ceramic sleeve, and a gap is left between the self-focusing lens and the left end surface of the ceramic sleeve. The pin flange with the ceramic pin comprises a ceramic pin and a pin flange. The pin flange 4 comprises a first step hole and a second step hole. A bare optical fiber is inserted into the ceramic pin, and the optical fiber and the ceramic pin are connected as a whole. The right end of the ceramic pin is interference-pressed into the second step hole of the pin flange. The right end of the pin flange 4 is provided with a circular hole cavity through which the optical fib passes. The pin flange with the ceramic pin is combined with the optical fiber to form an optical fiber pin body. The right end of the ceramic sleeve is adhered in the first step hole of the pin flange. The ceramic pin is in contact with the self-focusing lens.

Description

technical field [0001] The invention relates to an optical fiber beam expansion contact piece based on a self-focusing lens, and belongs to the technical field of optical fiber connectors. Background technique [0002] The expanded beam optical fiber connector is a new type of optical fiber connector. The difference between it and the traditional terminated optical fiber connector is that its contact piece combines the beam expansion focusing effect of the lens to realize the non-contact transmission of optical signals. Expanded beam fiber optic connectors have become the first choice in harsh environments because of their good beam expansion performance and non-contact connection. The non-contact structural design ensures high reliability of signal transmission in harsh environments. The signal is transmitted after beam expansion and collimation, which can be insensitive to short-distance changes. This feature ensures that the signal transmission is not interrupted in seve...

AI Technical Summary

Problems solved by technology

However, the former is limited by the packaging method and material of the collimator, so it is difficult to remove and repair, which is not conducive to the environment that requires on-site removal and repair; the latter has higher requirements for processing accuracy due to the limitation of the focal length of the ball lens. Currently limited by the processing accuracy of parts, it is still impossible to guarantee stable and low-loss transmission of light performance

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