Off-axis optical fiber rotary connector

Abstract

The invention discloses an off-axis optical fiber rotary connector, which comprises an inner flange, an outer flange and optical paths, wherein the bodies of the inner flange and the outer flange are provided with cavities; the optical paths are arranged in the cavities; the contact surfaces of the two flanges are assembled together through a bearing and can rotate oppositely around a central rotating shaft; the surfaces of the inner flange and the outer flange are provided with reserved through holes; collimating and beam expanding lenses of optical input and output ends are arranged in the through holes respectively; each optical fiber joint is closely attached to each collimating and beam expanding lens, and a sleeve is arranged outside each optical fiber joint and each collimating and beam expanding lens; the optical fiber joint and the collimating and beam expanding lens have the same central optical axis; the sleeve is fixedly arranged on each flange through a bolt; each optical input and output end is connected with a multi-path optical transceiver through the optical fiber on the respective tail part; and a right-angle face of an infrared right-angle prism is aligned with an outer mirror surface of each collimating and beam expanding lens and is closely and fixedly attached to the inner wall of the cavity of each flange. The entire off-axis optical fiber rotary connector is a passive device and is convenient to mount, the sensitivity of the optical fiber rotary connector to the angle and the axial deviation is greatly reduced, the insertion loss is small, and bidirectional optical signal transmission can be realized.

Description

technical field [0001] The invention relates to an off-axis optical fiber rotary connector. The optical fiber rotary connector is mainly used in the field of optical fiber communication and optoelectronic technology for optical signal coupling connection between optical fibers. Background technique [0002] The optical fiber rotary connector can maintain the optical path connection on the relatively rotating optical fiber, and it is a passive optical fiber connection device that realizes dynamic coupling. The function of the optical fiber rotary connector is to maintain the continuous transmission of optical signals from the rotating optical fiber at one end to the fixed optical fiber at the other end. Compared with traditional electrical slip rings, optical fiber rotary connectors have the following advantages: use light for signal transmission, anti-electromagnetic interference, long transmission life, low noise, and can greatly increase bandwidth when used in conjunction...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of ordinary optical fiber rotary connectors, such as large insertion loss, low transmission rate, high processing accuracy and incapability of off-axis transmission, and provide an off-axis optical fiber rotary connector

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