KR200316523Y1 - Duplex optical transceiver module - Google Patents

Abstract

The Duplex Optical Transceiver Module consists of a body having a first open channel, a second open channel and a sleeve. The centerline of the first open channel is orthogonal to the centerline of the second open channel. The first open channel has an optical transmission module and the second open channel has an optical reception module. The optical fiber is arranged coaxially with the fiber connector in the body at the opposite end of the first open channel. The filters are arranged at an angle at the intersection of the first open channel and the second open channel. One side of the filter facing the optical transmission module is coated with a material that transmits light from the optical transmission module. The other side of the filter, facing the optical receiving module, is coated with a material that completely reflects light from the optical fiber.

Description

Double Optical Transceiver Module {DUPLEX OPTICAL TRANSCEIVER MODULE}

The present invention relates to an optical transceiver. More particularly, the invention relates to a dual optical transceiver module in which the filter is inclined at an intersection of the first open channel and the second open channel. One side of the filter facing the optical transmission module is coated with a material that transmits light from the optical transmission module. The other side of the filter, facing the optical receiving module, is coated with a material that completely reflects light from the optical fiber.

In current optical communication systems, laser diodes are generally used as light sources. 1 and 2, a laser diode is packaged with the laser diode element 1a, and a light detector is packaged as the light detection element 2a. The laser diode element 1a and the light detection component 2a are provided as the optical transmission module 1 and the optical reception module 2 in the metal fixture 3, respectively. Therefore, the optical transfer module 1, the optical transfer module 2 and the main body 4 are packaged as a double optical transceiver module 5. An optical filter 6 is provided inside the main body 4. The top and bottom surfaces of the optical filter 6 are evaporation-coated as intermediates of different transmission indexes. Thus, the light emitted from the laser diode element 1a is coupled to the optical fiber 9a through the optical filter 6, and the light is completely reflected through the optical filter 6 to the photodetector 2a.

The optical fiber 9a is arranged in the same axis in the fiber connector 9, and the fiber connector 9 is located in the sleeve 11. The sleeve 11 is fixed to the main body 4 by laser welding.

The optical filter 6 is fixed to the frame 8 of the filter support 7, and the filter support 7 is inserted into the main body 4. A positioning pin 10 is inserted between the main body 4 and the filter support 7 to adjust the filter 6. Thereby, light can be reflected or refracted from the filter 6 so that it can be coupled to the optical fiber 9a and the detector 2a.

Since the prior art of the double optical transceiver module 5 includes a main body 4, a support 7, and a positioning pin 10 and a sleeve 11, the manufacturing cost is high and the machining procedure is high. Is complicated. The sleeve 11 is processed by the lathe, and as a result, the error becomes large, and the transmission state amount of the double optical transceiver module becomes unstable.

In addition, it is traditionally difficult to fix the filter 6 at an angle of 45 degrees within the body 4. Therefore, the support 7 must be formed so that the filter 6 is fixed to the frame 8, and the positioning pin 10 is used to fix the support 7. The filters 6 are thus arranged at an angle of 45 degrees in order to make optical coupling efficient in the body 4. The filter 6 has the possibility of instability due to the machining of the body 4, the support 7 and the positioning pin 10. Therefore, the focus of the filter 6 is changed and the accumulated error becomes larger.

The main object of the present invention is to provide a double optical transceiver module consisting of the following elements. The body has a first open channel, a second open channel and a sleeve. The centerline of the first open channel is orthogonal to the centerline of the second open channel. The first open channel has an optical transmission module and the second open channel has an optical reception module. The optical fiber is arranged at the same axis as the fiber connector in the body at the opposite end of the first open channel. The filters are arranged at an angle at the intersection of the first open channel and the second open channel. One side of the filter facing the optical transmission module is coated with a material that transmits light from the optical transmission module. The other side of the filter, facing the optical receiving module, is coated with a material that reflects light completely from the optical fiber.

Various objects and advantages of the present invention can be better understood from the following detailed description taken in conjunction with the accompanying drawings.

1 and 2 show perspective and exploded views of the prior art of a double optical transceiver module, respectively.

3 and 4 show a perspective view and a developed view of a double optical transceiver module according to the present invention, respectively.

5A is a cross-sectional view of the present invention.

5B is a right side view of FIG. 5A.

6 is a cross-sectional view taken along line 6-6 in FIG. 3.

* Code Description *

1, 27: optical transmission module 1a: laser diode element

2, 28: optical receiving module 2a: optical detection element

3: metal fixture 4, 20: body

5: double optical transceiver module 6, 30: optical filter

7: filter support 8: frame

9, 25: fiber connector 9a, 26: optical fiber

10: positioning pin 11, 23: sleeve

21: first open channel 22: second open channel

24: inclined support 29: opening

The dual optical transceiver module of the present invention is illustrated in FIGS. 3 to 6. The double optical transceiver module includes a main body 20 made of metal powder sprayed, and the main body 20 includes a first open channel 21, a second open channel 22, and a sleeve 23. Have. The first open channel 21 and the second open channel 22 are adjacent to each other, but are formed in different directions. The first open channel 21 and the second open channel 22 can be delivered. The center line of the first open channel 21 is orthogonal to the center line of the second open channel 22. The sleeve 23 is sleeved in the body 20 opposite the first open channel 21.

The first open channel 21 has an optical transmission module 27 and the second open channel 22 has an optical reception module 28. The optical transmission module 27 and the optical reception module 28 are welded to the main body 20 by laser welding.

The interior of the sleeve 23 is arranged with a fiber connector 25. The optical fiber 26 is arranged in the same axis on the fiber connector 25, which allows the light from the laser diode of the optical transfer module 27 to be refracted by the filter 30 and transmitted to the optical fiber 26, This is to allow the light received by 26 to be totally reflected and coupled to the optical receiving module 28.

The inclined support 24 is installed in the main body 20, which is formed at an inclined angle of 45 degrees with respect to the path of light coming from the optical transmission module 27 to support the filter. The inclined support 24 has an opening 29 to transmit an optical signal. The filter 30 may be coupled to the inclined support 24. The accuracy of the coupling between the optical fiber and the photodetector is significantly improved because the placement direction of the filter 30 is very accurate.

As shown in FIG. 6, the upper and lower surfaces of the filter 30 were evaporated-plated with materials of different transmission rates, which were emitted from the laser diode of the optical transfer module 27 (arrows indicated by X). ) Is reflected through the filter 30 and focused on the optical fiber 26. Light received by the optical fiber (arrow indicated by Y) is totally reflected by the filter 30 and focuses on the optical receiving module 28.

Indeed, the first open channel 21 and the second open channel 22 and the sleeve 23 and the inclined support 24 are integrally formed with the body 20 to reduce problems in assembly and finishing. Therefore, manufacturing costs are greatly reduced and fewer parts are used to reduce errors. The direction of the filter 30 can be stably positioned so that more efficient optical coupling can be obtained.

In summary, the sleeve 23 and the inclined support 24 are integrally formed with the body 20. Accordingly, the optical fiber connector 25 and the filter 30 are directly fixed to the sleeve 23 and the inclined support 24. Accordingly, the cost is reduced and the filter 30 is fixed at an inclination angle of 45 degrees, thereby reducing the assembly process of the main body. Therefore, the focus is not changed to increase the coupling efficiency between the optical fiber and the detector and to improve the amount of transmission state.

As described above, the present invention can be modified in various ways. Such modifications do not depart from the spirit and scope of the present invention, and such modifications apparent to those skilled in the art to which the present invention pertains are included within the scope of the following claims.

Claims (3)

The first open channel and the second open channel are adjacent to each other, but have different directions and are capable of transmission. The center line of the first open channel and the center line of the second open channel are perpendicular to each other, respectively, to the optical transmission module and the optical reception module. A sleeve sleeved to the body opposite the first open channel and the second open channel, and the first open channel, a fiber connector arranged inside the sleeve, and an optical fiber arranged in the same axis within the fiber connector, and a first One side of the filter, which is arranged at an intersection of the open channel and the second open channel and faces the optical transmission module, is coated with a material which transmits light from the optical transmission module and the other side of the filter facing the optical reception module is an optical fiber. A double optical transceiver module consisting of a main body consisting of a filter coated with a material that completely reflects light from The double optical transceiver module according to claim 1, wherein an inclined support is provided to support the filter, and the inclined support has an opening for transmitting an optical signal. The double optical transceiver module according to claim 1, wherein the inclined support is moved at an angle of 45 degrees from the axis of the first open channel.