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An integrated optical fiber assembly

A fiber optic component and single-core optical fiber technology, applied in the field of photoelectric detection, can solve problems such as unfavorable system integration, reduced reliability, and increased insertion loss, and achieve the effects of easy system integration, low insertion loss, and simple and compact structure

Active Publication Date: 2019-10-01
HUAZHONG PHOTOELECTRIC TECH INST (CHINA SHIPBUILDING IND CORP THE NO 717 INST)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The optical fiber link has the following disadvantages: 1) Three devices are required, which is large in size and is not conducive to system integration; 2) The three devices are connected by pigtail fusion, which increases insertion loss and reduces reliability

Method used

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  • An integrated optical fiber assembly
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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0019] refer to figure 1 As shown, a traditional fiber link includes a low-power 1×2 fiber coupler 14, a high-power 1×2 fiber coupler 15, a high-power fiber circulator 16 and a fiber collimator 4, and the low-power 1×2 fiber The coupler 14 is connected to the third port 003 of the high-power fiber optic circulator, the high-power 1×2 fiber coupler 15 is connected to the first port 001 of the high-power fiber optic circulator, and the fiber collimator 4 passes through The fiber optic adapter 3 is connected to the second port 002 of the high-power fiber optic circulator. Specific workflow: the laser signal enters the high-power 1×2 fiber coupler 15, and a small part of the laser light enters the low-power 1×2 fiber coupler 14 for main wave sampling; the rest of the laser passes through the high-power fiber circulator first Port 001 enters the high-power fiber...

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Abstract

The invention discloses an integrated optical fiber assembly comprising a housing, a first single-core fiber collimator, a first lens and a first broadband depolarization splitting / combining prism. The first single-core fiber collimator, the first lens and the first broadband depolarization splitting / combining prism are arranged successively along the optical axis direction in the housing. A first birefringent crystal, a Faraday rotating piece, a phase rotation wave plate, a second birefringent crystal, a second lens and a second single-core fiber collimator are arranged in the rear of the first broadband depolarization splitting / combining prism successively along the optical axis direction; and a second broadband depolarization splitting / combining prism, a third lens, and a third single-core fiber collimator are arranged successively at the side of the first broadband depolarization splitting / combining prism along the optical axis direction. Besides, a first prism, a polarizing beamsplitting / combining prism, and a second prism are arranged between the first broadband depolarization splitting / combining prism and the first birefringent crystal. The integrated optical fiber assembly having advantages of simple and compact structure, high environment stability, low insertion loss, and capability of being easy to system integration is applied to photoelectric detection fields of laser communication, laser radar, and fiber sensing and the like.

Description

technical field [0001] The invention belongs to the technical field of photoelectric detection, and in particular relates to an integrated optical fiber component, which can be widely used in photoelectric detection fields such as laser communication, laser radar, and optical fiber sensing. Background technique [0002] In the field of photoelectric detection such as laser communication, laser radar, and fiber optic sensor, the system usually includes a transmitting optical system and a receiving optical system. The transmitting optical system requires the laser to have a small beam divergence angle in order to increase the detection distance. Sampling; while the receiving optical system requires a larger field of view in order to receive as many weak echo signals as possible. At present, commonly used optical fiber links, such as figure 1 The part in the middle box includes high-power 1×2 fiber coupler, high-power fiber circulator, and low-power 1×2 fiber coupler. The spec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/27G02B6/34G02B6/32
Inventor 陈炯孙峰郑建奎叶骏伟
Owner HUAZHONG PHOTOELECTRIC TECH INST (CHINA SHIPBUILDING IND CORP THE NO 717 INST)