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Dove prism mounting and adjusting method for fiber optic rotary joint

A technology of rotary connectors and Dove prisms, applied in installation, optics, instruments, etc., can solve the problems affecting the coupling loss of the optical path, the position change of the outgoing light, etc., to reduce the coupling loss, reduce the space size, and reduce the tilt error Effect

Active Publication Date: 2017-01-04
8TH RES INST OF CETC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the Dove prism optical path is coupled, the incident light of the incident fiber collimator passes through the Dove prism and the outgoing light position should correspond to the receiving optical fiber collimator. When the central axis of the Dove prism does not coincide with the mechanical rotation axis, the outgoing light position and The corresponding receiving fiber collimator deviates, resulting in a change in the position of the outgoing light, which in turn affects the coupling loss of the optical path

Method used

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  • Dove prism mounting and adjusting method for fiber optic rotary joint
  • Dove prism mounting and adjusting method for fiber optic rotary joint
  • Dove prism mounting and adjusting method for fiber optic rotary joint

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Embodiment Construction

[0027] Below in conjunction with accompanying drawing, by describing embodiment, the present invention will be further described:

[0028] Such as Figures 1 to 8 As shown, the method for installing and debugging the Dove prism used in the optical fiber rotary connector of the present invention includes the following steps:

[0029] 1) Determination of the reference optical axis: Install an incident fiber collimator 3 at the center of the central collimation end cap 1, and connect a visible light source to the incident fiber collimator 3, and then observe the visible light source on the spot detection device 4, by adjusting the position of the central collimation end cap 1 at one end of the rotary connector rotor 2 and rotating the rotary connector rotor 2, the visible light source is placed on the spot detection device 4 installed at one end of the rotary connector stator 12 At this time, the optical axis of the incident fiber collimator 3 is positioned at the reference opti...

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Abstract

The invention discloses a Dove prism mounting and adjusting method for a fiber optic rotary joint. The method comprises the following steps of 1), determining a reference optical axis; 2), fixing the Dove prism; 3), performing position adjustment on an axial surface in the Dove prism; and 4), performing prism sleeve fixation and performance testing. According to the Dove prism mounting and adjusting method, through continuously adjustment, inclination error and off-axis error of the Dove prism after mounting are reduced, so that the middle axial surface of the Dove prism is superposed with a mechanical rotating shaft of the fiber optic rotary joint, thereby reducing coupling loss between an incident fiber collimator and a receiving fiber collimator.

Description

technical field [0001] The invention relates to an optical fiber rotary connector, in particular to a method for installing and debugging a Dove prism used in the optical fiber rotary connector. Background technique [0002] Multi-channel optical fiber rotary connector is a device for optical fiber signal transmission between rotating and stationary platforms. It is widely used in airborne, ship-borne, and ball-borne systems for large data transmission of optical fiber signals. Dove prisms are used as multi-channel optical fiber rotary connections The key optical prism in the device. The characteristic of the Dove prism is that when the incident light collimator rotates at an angular velocity of 2ω, the Dove prism must be rotated at an angle of ω to ensure that the position of the outgoing light remains unchanged, thereby realizing the coupling between the input channel and the output channel of the multi-channel optical signal . [0003] When the Dove prism optical path i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/18
CPCG02B7/1805
Inventor 周丰陈群方格赵庆佳薛叙芦春锋
Owner 8TH RES INST OF CETC
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