Calibrating tool, calibrating method, fiber inserting assembly and fiber connector

Abstract

The invention discloses a calibrating tool used for calibrating the position of a fiber in the inner hole of a fiber inserting core. The calibrating tool comprises a high-precision external diameter aligning element and a fiber position high-precision calibrating element. The high-precision external diameter aligning element is used for aligning the outer cylinder of the fiber inserting core to the outer cylinder of the fiber position high-precision calibrating element. One end of the fiber passes through the inner hole of the fiber inserting core and is inserted into the calibrating hole of the fiber position high-precision calibrating element in order that the axis of the fiber inserted into the inner hole of the fiber inserting core us is aligned to a central axis determined by the outer cylinder of the fiber inserting core. Therefore, a high-precision fiber connector is produced by the low-precision fiber inserting core and production cost is reduced. The invention also discloses a calibrating method and a high-precision fiber connector produced by using the calibrating tool and the calibrating method and provided with precision equal to or more than that of a single-mode fiber connector.

Description

technical field [0001] The invention belongs to the field of optical fiber connectors. The invention relates to a method for calibrating optical fibers (including conventional single-core optical fibers, multi-core single fibers, bundled multi-fibers or multi-fiber bundles. The "fiber" mentioned in this document has the same The calibration tool and calibration method for the position in the inner hole of the optical fiber ferrule, as well as the optical fiber ferrule assembly and the optical fiber connector manufactured by the calibration tool and calibration method. Specifically, the present invention proposes a low-precision ferrule (with a larger inner hole diameter and eccentricity, such as a multi-mode ferrule or a lower-required specification than a multi-mode ferrule) to manufacture low-cost, high-performance ferrules. (low insertion loss), easy-to-operate new process technology of single-mode optical fiber connectors, completely changed the single-mode optical fiber c...

AI Technical Summary

Problems solved by technology

The single-mode / multi-mode ferrules used in fiber optic connectors seem to have the same appearance and structure, but the single-mode ferrules have high requirements on the relative dimensions of the ferrules, especially the concentricity between the inner diameter of the ferrule and the outer cylinder The precision requirements are extremely high (usually within 1.5 microns, in order to meet the ultra-low insertion loss of the butt connection, the precision must even be controlled at the sub-micron level - less than 1 micron), the most direct result of the high precision requirements is that the single-mode ferrule The high cost / price leads to the high cost of single-mode connectors, especially for ultra-low loss connectors, and the cost of the ferrule is almost doubled.

[0015] Therefore, in the prior art, low-precision ferrules (such as precision equal to or lower than that of multimode ferrules) cannot be used to manufacture high-precision single-mode fiber optic connectors

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