Band service optical fiber low-frequency modulation generation device on basis of macrobend loss

Abstract

The invention relates to a band service optical fiber low-frequency modulation generation device on the basis of macrobend loss, which comprises a motor, a transmission assembly, a bending clamping assembly and a base. The transmission assembly comprises a cylindrical cam, a rolling bearing, a push rod, a pull rod and a tension spring; the tension spring is acted on the push rod and enables the rolling bearing at the tail part of the push rod to be pressed against the inclined plane of the cylindrical cam; the bending clamping assembly is arranged at the front end of the push rod and comprises a four-bar mechanism; the four-bar mechanism clamps an optical fiber by two pairs of clamping pillars on the four-bar mechanism; a wrapping post is arranged between the two pairs of clamping pillars; the optical fiber can be bent at the position of the wrapping post; the motor drives the cylindrical cam to synchronously rotate, the inclined plane of the cylindrical cam drives the push rod to move back and forth by matching with effects of the tension spring, the push rod drives the four-bar mechanism to carry out reciprocating deformation and the four-bar mechanism drives the optical fiber to carry out reciprocating bending motion under the specific frequency. According to the and service optical fiber low-frequency modulation generation device, the band service optical fiber can be subjected to macro bending under the specific frequency and at a variable bending angle and low-loss specific-frequency power modulation is generated in the optical fiber.

Description

technical field [0001] The invention relates to a macrobending loss-based low-frequency modulation generating device for an optical fiber with a service, and belongs to the technical field of optical fiber identification. Background technique [0002] When a fiber is loaded with information, it is called a service fiber. [0003] The macrobending loss of the optical fiber refers to: when the optical fiber produces a macrobending (that is, the bending radius is much larger than the diameter of the optical fiber), a small part of light escapes through the cladding, causing additional loss of optical power. This loss of optical power is called macrobend loss or insertion loss. [0004] The identification and detection of optical fiber is an important content in the process of optical fiber installation and maintenance. During maintenance, installation, cabling and restoration, there is often a need to locate and isolate a specific fiber without disrupting business. Identifyi...

AI Technical Summary

Problems solved by technology

This optical fiber identification method can only identify dark optical fibers, and cannot accurately distinguish specific optical fibers with services

In addition, wrongly disconnecting a ribbon service fiber will cause system interruption and cause huge economic losses

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