CN213843605U

CN213843605U - Single fiber three-way device

Info

Publication number: CN213843605U
Application number: CN202023165196.XU
Authority: CN
Inventors: 王四俊; 王桥; 赵彪; 马梅芳; 马干彦
Original assignee: Shenzhen Lizi Photoelectric Technology Co ltd
Current assignee: Shenzhen Lizi Photoelectric Technology Co ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-07-30
Anticipated expiration: 2030-12-25

Abstract

The utility model discloses a single fiber three-dimensional device, including metallic structure, one side fixed welding of metallic structure has first TO device, and the outside of first TO device installs first PD, metallic structure's top fixedly connected with second TO device. The utility model discloses in, through increasing single wavelength device or dual wavelength device to three wavelength device, can structurally compress as far as possible, thereby do not occupy too much circuit board space, and simultaneously, it is more stable for a long time to do benefit to the product through adopting parallel optical coupling, be favorable to prolonging the life of product, the possibility of former spotlight defocus is higher, there is the risk of long-term reliability, and different wave plates can be through specific wavelength, other wavelength of separation, thereby avoid the mutual interference between the different wavelength in the cavity, make the device can compatible 2.5G and 10G's of receipt communication wavelength, and in small and exquisite reasonable size design can be applied to current handheld optical power meter, the effectual usage space that has practiced thrift.

Description

Single fiber three-way device

Technical Field

The utility model relates to an optical communication technical field especially relates to single fiber three-dimensional device.

Background

Optical communication is a communication mode using light waves as carriers, various types of optical fiber communication systems are widely put into use along with the continuous extension of the service life of semiconductor lasers and the continuous reduction of optical fiber loss, and the optical fiber communication is developed towards the directions of long wavelength, single mode, ultralow loss, dense wavelength division multiplexing, ultra-large capacity, coherent heterodyne detection, optical integration, all-optical communication without photoelectric conversion and the like.

The receiving wavelength supported by the handheld optical power meter on the market at present is generally 1490nm or 1310nm, and as the speed steps from 2.5G to 10G, the wavelength is increased by 1550nm and 1577nm, the conventional handheld optical power meter does not have a device compatible with the 1490nm, 1550nm and 1577nm three wavelengths, so that the application range effect is caused, the transmission effect is poor, and the product wavelength of higher-speed 10G cannot be compatible.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the receiving wavelength that handheld optical power meter on the market at present supported and is generally 1490nm or 1310nm, and along with the speed from 2.5G step towards 10G, the wavelength has also increased 1550nm and 1577nm, current handheld optical power meter does not possess can compatible 1490nm simultaneously, 1550nm, 1577nm three-wavelength's device, lead to the application scope effect, and the transmission effect is poor, can't be compatible the shortcoming of higher speed 10G's product wavelength, and the single fiber three-way device of proposing.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the single-fiber three-way device comprises a metal structure, wherein a first TO device is fixedly welded on one side of the metal structure, a first PD is installed on the outer side of the first TO device, a second TO device is fixedly connected TO the top of the metal structure, a second PD is installed on the top end of the second TO device, a third TO device is connected TO one side of the second TO device, the bottom end of the third TO device is fixedly welded with the top of the metal structure, a third PD is installed on the top of the third TO device, a parallel light adapter is connected TO one side of the metal structure, a first wave plate is pasted in the metal structure, a second wave plate is installed on one side of the first wave plate, a third wave plate is connected TO the top of the second wave plate, the third wave plate and the metal structure are pasted and installed, a fourth wave plate is installed on the other side of the second wave plate, and a fifth wave plate is connected TO the top of the fourth wave plate, and a lens is arranged on the inner wall of one side of the parallel light adapter.

As a further description of the above technical solution:

the first wave plate is a 90d wave plate, the wavelength of the first wave plate is 1550nm, and the second wave plate is a 45d wave plate.

As a further description of the above technical solution:

the third wave plate is a 0d wave plate, the wavelength of the third wave plate is 1490nm, and the fourth wave plate is a 45d wave plate.

As a further description of the above technical solution:

the fifth wave plate is a 0d wave plate, and the wavelength of the fifth wave plate is 1577 nm.

As a further description of the above technical solution:

the wavelength of the first PD is 1550nm, and the wavelength of the second PD is 1490 nm. The wavelength of the third PD is 1577 nm.

As a further description of the above technical solution:

the first TO device is TO 46.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

the utility model discloses in, through increasing single wavelength device or dual wavelength device to three wavelength device, can structurally compress as far as possible, thereby do not occupy too much circuit board space, and simultaneously, it is more stable for a long time to do benefit to the product through adopting parallel optical coupling, be favorable to prolonging the life of product, the possibility of former spotlight defocus is higher, there is the risk of long-term reliability, and different wave plates can be through specific wavelength, other wavelength of separation, thereby avoid the mutual interference between the different wavelength in the cavity, make the device can compatible 2.5G and 10G's of receipt communication wavelength, and in small and exquisite reasonable size design can be applied to current handheld optical power meter, the effectual usage space that has practiced thrift.

Drawings

Fig. 1 is a schematic perspective view of a single-fiber three-way device according to the present invention;

FIG. 2 is a schematic cross-sectional view of a single fiber triaxial device according to the present invention;

fig. 3 is a schematic view of a partial cross-sectional structure of a middle-single-fiber three-way device according to the present invention.

Illustration of the drawings:

1. a metal structural member; 2. a first TO device; 3. a first PD; 4. a second TO device; 5. a second PD; 6. a third TO device; 7. a third PD; 8. a parallel light adapter; 9. a first wave plate; 10. a second wave plate; 11. a third wave plate; 12. a fourth wave plate; 13. a fifth wave plate; 14. a lens.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring TO fig. 1 TO 3, the triplexer includes a metal structure member 1, a first TO device 2, a first PD3, a second TO device 4, a second PD5, a third TO device 6, a third PD7, a parallel light adaptor 8, a first wave plate 9, a second wave plate 10, a third wave plate 11, a fourth wave plate 12, a fifth wave plate 13, and a lens 14, the first TO device 2 is fixedly welded TO one side of the metal structure member 1, the first PD3 is installed on an outer side of the first TO device 2, the second TO device 4 is fixedly connected TO a top of the metal structure member 1, the second PD5 is installed on a top of the second TO device 4, the third TO device 6 is connected TO one side of the second TO device 4, a bottom end of the third TO device 6 is fixedly welded TO a top of the metal structure member 1, the third PD7 is installed on a top of the third TO device 6, the parallel light adaptor 8 is connected TO one side of the metal structure member 1, and the inside of metallic structure 1 is pasted and is had first wave plate 9, second wave plate 10 is installed TO one side of first wave plate 9, and the top of second wave plate 10 is connected with third wave plate 11, and third wave plate 11 and metallic structure 1 are for pasting the installation, fourth wave plate 12 is installed TO the opposite side of second wave plate 10, and the top of fourth wave plate 12 is connected with fifth wave plate 13, lens 14 is installed TO one side inner wall of parallel light adapter 8, under the effect of first TO device 2, second TO device 4 and third TO device 6, make single wavelength device or dual wavelength device increase TO three wavelength device, can structurally compress as far as possible, thereby do not occupy too much circuit board space.

As shown in fig. 3, the first wave plate 9 is a 90d wave plate, the wavelength of the first wave plate 9 is 1550nm, and the second wave plate 10 is a 45d wave plate, so that the device can be compatible with 1490nm, 1550nm and 1577nm at the same time under the action of the 1550nm wavelength of the first wave plate 9, thereby being compatible with a higher-speed 10G product.

As shown in fig. 3, the third wave plate 11 is a 0d wave plate, the wavelength of the third wave plate 11 is 1490nm, the fourth wave plate 12 is a 45d wave plate, and by setting a plurality of sets of wave plates, different wave plates can pass through a specific wavelength to block other wavelengths, thereby avoiding mutual interference between different wavelengths in the cavity.

As shown in fig. 3, the fifth wave plate 13 is a 0d wave plate, and the wavelength of the fifth wave plate 13 is 1577nm, so that the device can compatibly receive the communication wavelengths of 2.5G and 10G under the actions of the fifth wave plate 13, the first wave plate 9, the second wave plate 10, the third wave plate 11 and the fourth wave plate 12.

As shown in fig. 3, the wavelength of the first PD3 is 1550nm, and the wavelength of the second PD5 is 1490 nm. The wavelength of the third PD7 is 1577nm, and interference between wavelengths is avoided and compatibility of the device is improved by setting different wavelengths.

As shown in fig. 3, the first TO device 2 is TO46, and the second TO device 4 and the third TO device 6 are both TO46, so that under the action of TO46, the use space of the circuit board can be effectively saved.

The working principle is as follows: during the use, through pasting five wave plates in metallic structure 1's inside, at first wave plate 9, second wave plate 10, third wave plate 11, fourth wave plate 12 and fifth wave plate 13's effect down, make different wave plates can pass through specific wavelength, other wavelength of separation, thereby avoid the mutual interference between the different wavelength in the cavity, and adopt parallel light adapter 8 at metallic structure 1's end, adjust the index to the maximum value through the mode of coupling, enlarge application scope, thereby make the device can compatible 2.5G and 10G's communication wavelength of receipt, and small and exquisite reasonable size design can be applied to in the current handheld optical power meter, the effectual usage space that has practiced thrift, just so accomplish the theory of operation of the device.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. Single fiber three-dimensional device, including metallic structure spare (1), its characterized in that: one side of the metal structure member (1) is fixedly welded with a first TO device (2), a first PD (3) is installed on the outer side of the first TO device (2), the top of the metal structure member (1) is fixedly connected with a second TO device (4), the top of the second TO device (4) is provided with a second PD (5), one side of the second TO device (4) is connected with a third TO device (6), the bottom end of the third TO device (6) is fixedly welded with the top of the metal structure member (1), the top of the third TO device (6) is provided with a third PD (7), one side of the metal structure member (1) is connected with a parallel light adapter (8), the inside of the metal structure member (1) is pasted with a first wave plate (9), one side of the first wave plate (9) is provided with a second wave plate (10), and the top of the second wave plate (10) is connected with a third wave plate (11), and third wave plate (11) and metallic structure spare (1) are for pasting the installation, fourth wave plate (12) are installed to the opposite side of second wave plate (10), and the top of fourth wave plate (12) is connected with fifth wave plate (13), lens (14) are installed to one side inner wall of parallel light adapter (8).

2. The triplexer of claim 1 wherein: the first wave plate (9) is a 90d wave plate, the wavelength of the first wave plate (9) is 1550nm, and the second wave plate (10) is a 45d wave plate.

3. The triplexer of claim 1 wherein: the third wave plate (11) is a 0d wave plate, the wavelength of the third wave plate (11) is 1490nm, and the fourth wave plate (12) is a 45d wave plate.

4. The triplexer of claim 1 wherein: the fifth wave plate (13) is a 0d wave plate, and the wavelength of the fifth wave plate (13) is 1577 nm.

5. The triplexer of claim 1 wherein: the wavelength of the first PD (3) is 1550nm, and the wavelength of the second PD (5) is 1490 nm;

the wavelength of the third PD (7) is 1577 nm.

6. The triplexer of claim 1 wherein: the first TO device (2) is TO 46.