Improved structure of parallel light single-fiber bidirectional assembly

Abstract

The utility model discloses an improved structure of a parallel light single-fiber bidirectional assembly, which comprises a laser, an optical isolator, a focusing lens, an assembly seat, a wave plate assembly, a detector and an 8-degree focusing optical fiber, the laser is fixedly arranged at a left port of the assembly base, the optical isolator extends to the middle of the assembly base, the detector is fixedly arranged at an upper port of the assembly base, the wave plate assembly is arranged in the assembly base and located under the detector, the wave plate assembly comprises a 0-degree wave plate and a 45-degree wave plate, and the focusing lens is fixedly arranged in the assembly base and located on the right side of the wave plate assembly. The 8-degree focusing optical fiber is coupled and fixed at a right port of the assembly seat; the optical isolator is welded and fixed without an adjusting ring for transition, the connection is firm and stable, the failure rate is low, the service cycle is long, the use cost is low, the operation is simple and convenient, the common optical fiber with 8-degree focusing is small in size, the overall size of the product is small, the use is convenient and flexible, and the use requirement is effectively met.

Description

Technical Field

[0001] The utility model belongs to the field of communication, and particularly relates to an improved structure of a parallel light single-fiber bidirectional component which is simple to assemble, high in efficiency, low in use cost, small in overall size and more flexible and convenient to use. Background Art

[0002] For a single-fiber bidirectional component (as shown in Figure 2 ), its optical isolator is fixed in front of the laser by adhesive. After the optical isolation cavity is fixed, it is fixed at one end of the component base through an adjusting ring. At the same time, a collimator optical fiber and a lens are selected for optical coupling. This traditional structure can meet certain usage requirements, but there are also relatively large defects. The adhesive fixation is prone to de-bonding, with poor stability, high failure rate, short service life, requiring an adjusting ring for transition connection and welding at both ends, which is troublesome and inefficient. The collimator optical fiber has a large size, resulting in a relatively large size of the entire product, with a maximum size of up to 35 cm, large volume, inconvenient to use, high use cost, and unable to effectively meet the usage requirements.

[0003] The technical problem to be solved by the utility model is to provide an improved structure of a parallel light single-fiber bidirectional component in which the optical isolator is fixed by welding without using an adjusting ring for transition, with firm and stable connection, low failure rate, long service life, low use cost, simple and convenient operation, small size of ordinary optical fiber, convenient and flexible use, and effectively meeting the usage requirements. Content of the Utility Model

[0004] To solve the problems of the existing technology such as easy de-bonding of the adhesive fixation of the optical isolator, poor stability, high failure rate, short service life, requiring an adjusting ring for transition connection and welding at both ends, troublesome and inefficient operation, large size of the collimator optical fiber, relatively large product size, large volume, inconvenient to use, high use cost, and unable to effectively meet the usage requirements, the utility model adopts the following technical solutions:

[0005] The utility model provides an improved structure of a parallel light single-fiber bidirectional component, which includes a laser, an optical isolator, a focusing lens, a component base, a wave plate assembly, a detector and an 8°-angle focusing optical fiber. The optical isolator is welded and fixed in the frontmost position of the laser to form an integral body. The laser is fixed at the left port of the component base, and the optical isolator extends to the middle of the component base. The detector is fixed at the upper port of the component base. The wave plate assembly is arranged in the component base and is located directly below the detector. The wave plate assembly includes a 0° wave plate and a 45° wave plate. The centers of the detector, the 0° wave plate and the 45° wave plate are located on the same straight line in the vertical direction. The focusing lens is fixed in the component base through a lens tube body and is located on the right side of the wave plate assembly. The 8°-angle focusing optical fiber is coupled and fixed at the right port of the component base. The centers of the laser, the optical isolator, the focusing lens, the 45° wave plate and the 8°-angle focusing optical fiber are located on the same straight line in the horizontal direction.

[0006] The beneficial effects of the present utility model are as follows: The optical isolator is welded and fixed without using an adjustment ring for transition, with firm and stable connection, low failure rate, long service life, low usage cost, simple and convenient operation. The ordinary optical fiber with an 8° angle focusing has a small size, and the overall volume of the product is small, making it convenient and flexible to use, effectively meeting the usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model.

[0008] Figure 2 It is a schematic structural diagram of a traditional product. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0009] The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0010] Please refer to Figure 1 A modified structure of a collimated light single-fiber bidirectional component, including a laser 1, an optical isolator 2, a focusing lens 3, a component seat 4, a wave plate assembly 5, a detector 6, and an 8° angle focusing optical fiber 7. The optical isolator 2 is welded and fixed at the forefront of the laser 1 to form an integral body. Traditionally, it is fixed with glue, which is prone to de-bonding after a period of use, with poor firmness and high failure rate. The laser 1 is fixedly arranged at the left port of the component seat 4, and the optical isolator 2 extends to the middle of the component seat, so there is no need for an adjustment ring for transition connection, with simple operation and high efficiency, saving the cost of the adjustment ring and also reducing the product size. The detector 6 is fixedly arranged at the upper port of the component seat 4. The wave plate assembly 5 is arranged inside the component seat 4 and directly below the detector 6. The wave plate assembly 5 includes a 0° wave plate 51 and a 45° wave plate 52. The centers of the detector 6, the 0° wave plate 51, and the 45° wave plate 52 are located on the same straight line in the vertical direction. The focusing lens 3 is fixedly arranged inside the component seat 4 through a lens tube body and on the right side of the wave plate assembly 5. The 8° angle focusing optical fiber 7 is coupled and fixed at the right port of the component seat 4. The centers of the laser 1, the optical isolator 2, the focusing lens 3, the 45° wave plate 52, and the 8° angle focusing optical fiber 7 are located on the same straight line in the horizontal direction. Through the optical coupling of the optical fiber with an 8° angle focusing and the lens, there is no need to use a collimator optical fiber, which further reduces the product size. After integration, the size of the product can be reduced to 29 cm, which is shorter than the traditional 35 cm and is more flexible and convenient to use.

[0011] The beneficial effects of the present utility model are as follows: The optical isolator is welded and fixed without using an adjustment ring for transition, with firm and stable connection, low failure rate, long service life, low usage cost, simple and convenient operation. The ordinary optical fiber with an 8° angle focusing has a small size, and the overall volume of the product is small, making it convenient and flexible to use, effectively meeting the usage requirements.

[0012] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by those of ordinary skill in the relevant technical field shall be regarded as not departing from the patent scope of the present utility model.

Claims

1. An improved structure of a parallel optical single-fiber bidirectional component, characterized in that: The invention comprises a laser (1), an optical isolator (2), a focusing lens (3), a component holder (4), a wave plate component (5), a detector (6) and an 8° The optical isolator (2) is welded and fixed at the front of the laser (1) to form an integral body. The laser (1) is fixed at the left port of the component seat (4) and the optical isolator (2) extends to the middle of the component seat (4). The detector (6) is fixed at the upper port of the component seat (4). The wave plate assembly (5) is arranged in the component seat (4) and is located directly below the detector (6). The wave plate assembly (5) includes a 0° wave plate (51) and a 45° wave plate (52). The centers of the detector (6), the 0° wave plate (51), and the 45° wave plate (52) are located on the same straight line in the vertical direction; the focusing lens (3) is fixedly arranged in the component seat (4) through a lens tube and is located on the right side of the wave plate assembly (5); the 8° angle focusing optical fiber (7) is coupled and fixed at the right side port of the component seat (4); and the centers of the laser (1), the optical isolator (2), the focusing lens (3), the 45° wave plate (52), and the 8° angle focusing optical fiber (7) are located on the same straight line in the horizontal direction.

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