A rhomboid-clad polarization-maintaining optical fiber and its manufacturing method

Abstract

The invention discloses a diamond cladded polarization maintaining optical fiber and a manufacturing method thereof. The manufacturing method comprises the following steps that a chemical vapor deposition method is adopted to manufacture a core stress integrated rod, wherein the core stress integrated rod comprises a core layer, a stress layer and an outer cladding layer; the core stress integrated rod is machined to make a cross section diamond; a target rod with a diamond cross section is manufactured and is put inside a quartz glass sleeve, an outer spraying process is adopted to conduct deposition on the quartz glass sleeve, the target rod is removed to form a pure quartz glass diamond inner-hole sleeve after the deposition process is completed; the core stress integrated rod with the diamond cross section is placed in the pure quartz glass diamond inner-hole sleeve to form a polarization maintaining optical fiber perform, the olarization maintaining optical fiber perform is subjected to drawing to form the diamond cladded polarization maintaining optical fiber. The polarization maintaining optical fiber I good in process performance and product quality, high in manufacturing precision and finished product rate, good in machining adaptability and suitable for batch production.

Description

technical field [0001] The invention belongs to the field of optical fiber manufacturing, and in particular relates to a diamond-clad polarization-maintaining optical fiber and a manufacturing method thereof. Background technique [0002] Polarization maintaining fiber is a kind of special fiber. Polarization maintaining fiber is polarization maintaining fiber, which is a type of fiber that maintains the linear polarization direction of the transmitted light. Polarization-maintaining optical fiber can be applied in many fields, such as multiplexing coherent communication, fiber optic gyroscope, fiber optic hydrophone, polarization sensing, etc. Polarization maintaining fiber is a special fiber type with wide application value. [0003] In ordinary communication optical fiber, due to its circular symmetry structure, after a certain distance of transmission, the incident linearly polarized light will become elliptical or circularly polarized light due to the coupling and ene...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects of low precision and strong temperature sensitivity in the application of the existing polarization-maintaining optical fiber in the fiber optic gyroscope, the present invention provides a rhombus-clad polarization-maintaining optical fiber and a manufacturing method thereof, which improves the processing accuracy of the polarization-maintaining optical fiber and efficiency, reducing its temperature sensitivity

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