CN212586604U

CN212586604U - Innovative BOSA structure

Info

Publication number: CN212586604U
Application number: CN202021665406.9U
Authority: CN
Inventors: 王晓明; 武斌
Original assignee: Xinhe Semiconductor Technology Wuxi Co Ltd
Current assignee: Xinhe Semiconductor Technology Wuxi Co Ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2021-02-23
Anticipated expiration: 2030-08-12

Abstract

The utility model discloses an innovative BOSA structure, which comprises an LD-TO component, a PD-TO component, a filter and an optical fiber, wherein the filter is positioned between the LD-TO component and the optical fiber; the PD-TO assembly is positioned above the filter plate; the filter is a triangular prism, the cross section of the filter is a right-angled isosceles triangle, and the surface of the filter, which is positioned below the PD-TO assembly, is plated with a first antireflection film; and a second antireflection film is plated on the inclined plane of the filter plate, and the LD-TO assembly and the PD-TO assembly are coupled with the optical fiber through lenses. The utility model discloses a structural adjustment and optimization unite two into one 45 degrees and 0 degree filter, design out a new filter, it has 45 degrees filters and 0 degree filter's function and not the performance reduction to reduce the quantity of filter, reduced BOSA equipment complexity, reduced the defective rate and then improved production efficiency.

Description

Innovative BOSA structure

Technical Field

The utility model belongs to the optical communication field specifically is an innovative BOSA structure.

Background

The existing BOSA product is assembled by a plurality of separated elements, and mainly comprises a TX TO-CAN, an RX TO-CAN, a BASE, a 0-degree filter, a 45-degree filter, a fiber adapter and the like. The existing BOSA has high assembly complexity, poor production efficiency and high cost.

The beam splitting system in the BOSA comprises two independent filters of 45 degrees and 0 degree, pastes respectively in two specific position of BASE, because the filter area is very little, and is higher to pasting technology and pasting precision requirement, and is higher to operating personnel's technical requirement, often appears in reality and pastes not in place and lead to the problem that the product defective rate risees. Reducing the number of filters improves this problem from the source and is a very effective method.

In order to improve the production efficiency, many manufacturers directly remove the 0-degree filter, although the functional surface can be achieved, the RX signal (1490nm) isolation performance is directly reduced, and the customers with high performance requirements cannot be met, in other words, removing the 0-degree filter is a low-cost solution at the cost of performance sacrifice, and cannot meet the customers with high performance requirements.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a BOSA structure with novelty filter to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

an innovative BOSA structure comprises an LD-TO assembly, a PD-TO assembly, a filter and an optical fiber, wherein the filter is positioned between the LD-TO assembly and the optical fiber, and the filter, the LD-TO assembly and the optical fiber are all arranged along a horizontal optical axis; the PD-TO assembly is positioned above the filter plate; the filter is the prism, and the cross section of filter is right angle isosceles triangle, and two right angle limit widths of filter are 1.4 +/-0.05 mm, and the thickness of filter is 1.4 +/-0.05 mm.

Further, the inclined plane of the filter plate faces the LD-TO assembly at an angle of 45 degrees.

Furthermore, a first antireflection film is plated on the surface of the filter plate, which is positioned below the PD-TO assembly, and the first antireflection film is of a square structure; the inclined plane of the filter plate is plated with a second antireflection film, and the second antireflection film is of a rectangular structure.

Still further, the LD-TO assembly and the PD-TO assembly are both coupled with the optical fiber through lenses.

Compared with the prior art, the beneficial effects of the utility model are that: through structural adjustment and optimization, unite two into one 45 degrees and 0 degree filter, form the filter of an integral type, make it have 45 degrees filters and 0 degree filter's function and not the performance reduction to reduce the quantity of filter, reduced BOSA equipment complexity, reduced the defective rate and then improved production efficiency.

Drawings

Fig. 1 is a schematic structural diagram of an inventive BOSA structure.

Fig. 2 is a schematic structural diagram of a filter in an inventive BOSA structure.

In the figure: 1. an LD-TO component; 2. a PD-TO component; 3. a filter plate; 4. an optical fiber; 31. a first antireflection film; 32. and a second antireflection film.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Referring TO fig. 1, an innovative BOSA structure includes an LD-TO module 1 capable of emitting λ 1 optical signals, a PD-TO module 2 capable of receiving λ 2 optical signals, a filter 3 and an optical fiber 4, where the filter 3 is located between the LD-TO module 1 and the optical fiber 4, and the filter 3, the LD-TO module 1 and the optical fiber 4 are all arranged along a horizontal optical axis; the PD-TO assembly 2 is positioned above the filter plate 3; filter 3 is the prism, and filter 3's cross section is right angle isosceles triangle, and two right angle limit widths of filter 3 are 1.4 +/-0.05 mm, and filter 3's thickness is 1.4 +/-0.05 mm.

The inclined plane of the filter 3 faces the LD-TO assembly 1 at an angle of 45 degrees.

The surface of the filter plate 3, which is positioned below the PD-TO component 2, is plated with a first antireflection film 31, and the first antireflection film 31 is of a square structure, so that light transmission of 1490nm wavelength and isolation of other wavelengths are realized; the inclined plane of the filter 3 is plated with a second antireflection film 32, and the second antireflection film 32 is in a rectangular structure, so that 1310nm light transmission and other wavelength isolation are realized.

The LD-TO package 1 and the PD-TO package 2 are each coupled TO an optical fiber 4 through their own lens.

The barrier properties of first antireflection film 31 are shown in table 1:

TABLE 1 first index of anti-reflection film isolation

The barrier properties of second antireflection film 32 are shown in table 2:

TABLE 2 second antireflection film isolation index

The utility model discloses a theory of operation is: the laser emits light with a wavelength of lambda 1, the light is focused into parallel beams through a self-focusing lens on the LD component, the parallel beams are coupled into the optical fiber through the two-in-one filter 3 and then transmitted out through the optical fiber 4; light with the other wavelength of lambda 2 is transmitted into the PD component through an optical fiber 4, is refracted to a self-focusing lens on the PD component through a two-in-one filter 3, is coupled with the detector component through lens condensation, and is finally received by a receiver; thereby make the utility model discloses a BOSA has only realized the beam split of two wavelengths promptly through a filter, has reduced the number of filter, has reduced the complexity of equipment, has reduced the defective rate and then has improved production efficiency.

The utility model discloses a BOSA structure can extensively be used for the optical communication field, under the prerequisite that does not sacrifice the performance as the cost, has improved BOSA's production efficiency.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. An innovative BOSA structure, characterized by comprising an LD-TO assembly (1) capable of emitting λ 1 optical signals, a PD-TO assembly (2) capable of receiving λ 2 optical signals, a filter (3) and an optical fiber (4), said filter (3) being located between the LD-TO assembly (1) and the optical fiber (4); the PD-TO assembly (2) is positioned above the filter plate (3); the filter plate (3) is a triangular prism, and the cross section of the filter plate (3) is a right-angled isosceles triangle.

2. Innovative BOSA structure according TO claim 1, characterized in that said LD-TO package (1) and PD-TO package (2) are both coupled TO optical fiber (4) by their own lens.

3. Innovative BOSA structure according TO claim 1, characterized in that the filters (3), LD-TO modules (1) and fibers (4) are all arranged along a horizontal optical axis.

4. Innovative BOSA structure according to claim 1, characterized in that the width of both right-angled sides of the filter (3) is 1.4 ± 0.05mm, and the thickness of the filter (3) is 1.4 ± 0.05 mm.

5. Innovative BOSA structure according TO claim 1, characterized in that the filter segment (3) is beveled at 45 degrees towards LD-TO assembly (1).

6. The innovative BOSA structure according TO claim 1, characterized in that the side of the filter (3) below the PD-TO component (2) is coated with a first antireflection film (31), and the first antireflection film (31) has a square structure.

7. The innovative BOSA structure according to claim 1, characterized in that the inclined plane of the filter (3) is plated with a second antireflection film (32), and the second antireflection film (32) is rectangular.