Moisture-proof sealed connector based on high-power single-mode polarization maintaining/single-polarization special fiber

Abstract

The present invention discloses a moisture-proof sealed connector based on a high-power single-mode polarization maintaining / single-polarization special optical fiber, including a conventional single-mode polarization maintaining / single-polarization fiber connector that is formed by sequentially socketing standard component flange, a right thrust block seat, an inner ceramic ferrule tube, a left thrust block seat, a key, and an outer ceramic ferrule, a spring, a stop flange, a round washer, a large nut, a ring, a compression ring, and a pigtail sleeve. An I-type sealing ring is disposed between the stop flange of the conventional single-mode polarization maintaining / single-polarization fiber connector and the large nut. An II-type sealing ring is disposed between the key button and the left thrust block seat. An III-type sealing ring is disposed between the flange and the right thrust block seat. An outer surface of the left half of the stop flange, the left half of the ring and an outer surface of the compression ring are covered with silicone rubber. After the silicone rubber is dry, the pigtail sleeve is completely covered in a silicone rubber area. The connector has advantagesof low cost, good moisture-proof and sealing performance, simple manufacturing process and wide application range, and is an optical passive component with high stability and a long life.

Description

technical field [0001] The invention relates to a high-power optical fiber connector, in particular to a moisture-proof and sealed connector based on a high-power single-mode guaranteed / single-bias special optical fiber. Background technique [0002] Traditional single-mode guaranteed / single-biased optical fiber connectors are assembled from various standard parts. There is no sealing process in the molding process, and no moisture-proof sealing treatment. In practical applications, especially in long-term online applications, traditional optical fiber connectors are not It has a moisture-proof sealing effect, which leads to its internal moisture and cleanliness not up to standard, which has serious consequences in the fields of light transmission, light measurement, and light sensing, especially in high-power laser devices or strong light transmission and measurement applications. , The measurement not only has a large number of optical fiber connectors used, but also puts ...

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Problems solved by technology

[0002] Traditional single-mode guaranteed / single-biased optical fiber connectors are assembled from various standard parts. There is no sealing process in the molding process, and no moisture-proof sealing treatment. In practical applications, especially in long-term online applications, traditional optical fiber connectors are not It has a moisture-proof sealing effect, which leads to its internal moisture and cleanliness not up to standard, which has serious consequences in the fields of light transmission, light measurement, and light sensing, especially in high-power laser devices or strong light transmission and measurement applications. , The measurement not only has a large number of optical fiber connectors used, but also puts forward new requirements for optical fiber connectors. In such key application fields, due to the high optical power in the optical fiber connectors, heat is generated when the optical fiber connectors are docked. When When the optical path is disconnected, water mist will be generated in the optical fiber connector during the process of returning to normal temperature, especially the condensation of water mist at the butt joint of the optical fiber connector, which will lead to increased optical loss of high-power laser devices and strong optical transmission and measurement systems, and serious performance problems. It will even damage the fiber core of the optical fiber connector and affect the normal use of the device and system. The reason is mainly due to the poor moisture-proof sealing performance of the traditional single-mode insurance / single-bias optical fiber connector, specifically because the traditional single-mode insurance / single During the molding process of the polarized fiber optic connector and when it is connected to the flange, the moisture-proof sealing process is not done, which causes dust and water vapor in the air to enter the end face of the ceramic ferrule and the surrounding area where the optical fiber is connected.

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