Optical fiber switch node sensor

Abstract

The invention discloses an optical fiber switch node sensor, which comprises a sensor body, an optical fiber coiling box, an optical fiber beam splitter, a first optical fiber collimator, a second optical fiber collimator, a movable sliding block and an elastic part, wherein the sensor body is provided with a first port accessed by an upper-level optical fiber, a second port accessed by a local optical fiber, and a third port accessed by a lower-level optical fiber. The optical fiber coiling box is provided, so that the time slot between back pulse light is increased. Optical paths are separated by arranging the optical fiber beam splitter, and more node sensors can be connected, so as to form a plurality of optical cable cross-connection cabinet networks. The first and second optical fiber collimators are connected with the optical fiber beam splitter and the local optical fiber, and a movable sliding block and an elastic piece are arranged between the two optical fiber collimators. Mechanical control of the on-off state of the back pulse light can be realized. The optical fiber switch node sensor serves as a sensing node, the switch states of the plurality of monitored optical cable cross-connection cabinets are monitored at the same time through a signal analysis device under passive condition after the sensing network is established.

Description

technical field [0001] The invention relates to the technical field of optical sensing, in particular to an optical fiber switch node sensor. Background technique [0002] The optical cable transfer box is a transfer device that provides optical cable termination and jumper connection for the backbone layer optical cable and the distribution layer optical cable. After the optical cable is introduced into the optical cable transfer box, after being fixed, terminated, and distributed, the backbone layer optical cable and the distribution layer optical cable are connected using a jumper fiber. It is mainly used in the optical cable communication network to connect the main optical cable and the branch optical cable, and to terminate, protect, connect and dispatch and manage the optical cable and optical fiber. [0003] With the promotion of TTX network technology and the expansion of various data services, operators have installed a large number of optical cable transfer boxes...

AI Technical Summary

Problems solved by technology

[0005] However, the signal analysis equipment used to process reflected light signals can only judge the opening and closing status of the door leaf of a single optical cable junction box by the presence or absence of reflected light in the optical fiber.

This results in the need to use a large number of idle optical fiber resources in practical applications to complete the monitoring of the opening and closing status of the door pages of multiple optical cable transfer boxes, which in turn leads to the deployment of optical fiber sensing systems that may reduce the expansion capacity of telecom operators' optical fiber networks

[0006] Due to the reduction in the size of base station equipment in recent years, the number of communication equipment rooms has become less and less, making it difficult to find enough communication equipment rooms to place nearby signal analysis equipment for processing reflected optical signals

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