A kind of pcvd lathe multi-channel rotary chuck

Abstract

The invention relates to a multi-channel rotary chuck of a PCVD lathe, comprising a fixed seat and a rotary jacket, the front end of the fixed seat is connected with the rotary jacket through a bearing, and a sealing device is arranged between the fixed seat and the rotary jacket, so that the The fixed seat is provided with a raw material gas mixing chamber and is connected to a basic mixed raw material gas pipeline, characterized in that the fixed seat is connected with a rare earth raw material heating gas pipeline and an auxiliary raw material gas heating pipeline, and the rare earth raw material heating gas pipeline and The auxiliary raw gas heating pipeline passes through the fixed seat and enters the inner cavity of the rotating chuck. The invention can provide the required rare earth doped raw materials for the PCVD deposition system, so that different raw materials can smoothly reach the reaction deposition area, so as to complete the PCVD deposition of the rare earth doped optical fiber preform, not only the doping uniformity is good, but also the optical fiber section precision is high , which can meet the production of various complex optical fiber profiles and ensure the transmission performance requirements of the optical fiber.

Description

Technical field [0001] The present invention relates to a PCVD lathe multi-channel rotating collet for deposition preparation of a rare earth fiber preform, belonging to the technical field of rare earth fiber processing equipment. Background technique [0002] In the field of optical communication, EDFA, which is electrodebttebuilding fiber is core, support long distance, large capacity, high-speed optical fiber communication, is a dense wavelength division multiplex system (DWDM), future high-speed system (100G has commercial, future Five years of 400g technology), an important device in which the full-screen network is an indispensable device, and is also the main device in ultra-high-speed long distance transmission systems. In the field of laser enlargement, fiber lasers represented by doping fibers are widely used in industrial, national defense, medical, etc., used for welding, marking, surface treatment, etc., output power is developed from a few watts to single mode outp...

AI Technical Summary

Problems solved by technology

The existing PCVD lathe rotary chuck includes a fixed seat and a rotary jacket, and a gas raw material delivery pipeline is installed in the fixed seat. 3 and rare earth chlorides, whose sublimation temperatures are above 180°C and 800°C respectively, the use of existing pipelines will cause condensation or partial condensation of high-temperature gaseous raw materials during the transportation process, and the transportation of raw materials cannot be realized

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