CN104280836A - Optical communication module - Google Patents

Abstract

The invention relates to an optical communication module. The optical communication module comprises a light steering element, a circuit board, a plurality of photoelectric assemblies electrically connected with the circuit board and a plurality of optical fiber assemblies corresponding to the photoelectric assemblies. The light steering element comprises a first illuminating surface facing the circuit board, a second illuminating surface which is vertical to the first illuminating surface and faces the multiple optical fiber assemblies, and a reflecting surface. A plurality of lenses are distributed on the first illuminating surface in a matrix mode, and a plurality of second lenses corresponding to the first lenses are arranged on the second illuminating surface. Each photoelectric assembly comprises a light-emitting element and a photoelectric detecting element. Each optical fiber assembly comprises a plurality of input optical fibers and a plurality of output optical fibers. Each light-emitting element corresponds to one first lens, one second lens and one output optical fiber, and each photoelectric detecting element corresponds to one first lens, one second lens and one input optical fiber. The reflecting surface is used for changing the transmission direction of the light emitted by the light-emitting elements and the transmission direction of the light input by the input optical fibers. A plurality of transmission channels are formed through the one reflecting surface.

Description

Optical communication module

technical field

The invention relates to an optical communication module.

Background technique

Generally, an optical communication module includes an optical coupling lens, a light emitting element, a photodetector and two optical fibers. The optical coupling lens generally includes two first lenses located on the substrate side and respectively corresponding to the light emitting element and the photodetector, a light reflecting surface and two second lenses located on the fiber side. The light signal emitted by the light-emitting element is converged into parallel light by the first lens, and then reflected by the light reflection surface to the second lens on the side of the fiber, and then converged into parallel light and emitted into the fiber. Conversely, the optical signal emitted by the optical fiber is converged into parallel light by the second lens, and then reflected by the light reflection surface to the first lens on the substrate side, then converged into parallel light and emitted to the photodetector, thereby realizing optical communication.

However, the existing optical communication modules only have a single transmission channel. With the continuous development of consumer optical communication technology, how to increase the transmission channel of the optical coupling lens has become an urgent problem to be solved.

Contents of the invention

In view of this, it is necessary to provide an optical communication module capable of increasing the transmission channel of the optical coupling lens.

An optical communication module includes a light steering element, a circuit board, a plurality of photoelectric assemblies electrically connected to the circuit board, and a plurality of optical fiber assemblies corresponding to the photoelectric assemblies. The light diverting element includes a first light-transmitting surface facing the circuit board, a second light-transmitting surface perpendicular to the first light-transmitting surface and facing the plurality of optical fiber combinations, and a reflective surface. A plurality of first lenses are distributed in matrix on the first light-transmitting surface, and a plurality of second lenses corresponding to the first lenses are arranged on the second light-transmitting surface. Each photoelectric combination includes a light-emitting element and a photodetection element. The fiber optic combination includes a plurality of input fibers and a plurality of output fibers. Each light emitting element corresponds to a first lens, a second lens and an output optical fiber, and each photoelectric detection element corresponds to a first lens, a second lens and an input optical fiber. The reflective surface is used to change the transmission direction of the light emitted by the light-emitting element and the light input by the input optical fiber.

The optical communication module of the present invention includes a plurality of photoelectric combinations and a plurality of optical fiber combinations, a plurality of first lenses are distributed in a matrix on the first light-transmitting surface, and a second lens is correspondingly distributed on the second light-transmitting surface, Each light-emitting element corresponds to a first lens, a second lens, and an output optical fiber, and each photodetection element corresponds to a first lens, a second lens, and an input optical fiber, and a reflective surface is used to form multiple transmission channels, Multiple optical signals can be transmitted simultaneously, which improves the utilization rate of the reflective surface and further improves the utilization rate of the light steering element.

Description of drawings

FIG. 1 is a schematic structural diagram of an optical communication module provided by the present invention.

FIG. 2 is an exploded perspective view of the optical communication module in FIG. 1 .

FIG. 3 is a schematic diagram of another direction of the light diverting element of the optical communication module in FIG. 1 .

FIG. 4 is a cross-sectional view of the optical communication module in FIG. 1 along line IV-IV.

Description of main component symbols

Optical communication module 100 light redirecting element 10 first surface 110 storage tank 111 first transparent surface 1110 first lens 1110a second surface 120 third surface 130 groove 131 fourth surface 140 gap 141 second transparent surface 112 second lens 1120 Reflective surface 113 circuit board 20 Photoelectric combination 30 Light emitting element 310 Photoelectric detection element 320 fiber optic combination 40 input fiber 410 output fiber 420

The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings.

Detailed ways

The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Please refer to FIG. 1 and FIG. 2 together. The optical communication module 100 provided by the embodiment of the present invention includes a light steering element 10, a circuit board 20, a plurality of photoelectric assemblies 30, and a plurality of optical fibers corresponding to the photoelectric assemblies 30. Combo 40. In this embodiment, the number of the photoelectric combination 30 is 15. It can be understood that the number of the photoelectric combination 30 can also be greater than or less than 15, that is, it can be set by itself according to requirements and specific conditions. Correspondingly, the optical fiber combination 40 The number of optical fibers in the medium also changes accordingly.

A plurality of photoelectric assemblies 30 are electrically connected to the circuit board 20 . In this embodiment, the circuit board 20 may be a soft board or a hard board.

Please refer to FIG. 3 , the light redirecting element 10 is generally square, and includes a first light-transmitting surface 1110 facing the circuit board 20 , and a first light-transmitting surface 1110 perpendicular to the first light-transmitting surface 1110 and facing the plurality of optical fiber assemblies 40 . The second transparent surface 112 and a reflective surface 113 . Wherein, the regions among the first transparent surface 1110 , the second transparent surface 112 and the reflective surface 113 are all transparent regions, which are made of transparent materials.

Please combine with FIG. 4, specifically, the light redirecting element 10 includes a first surface 110, a second surface 120, a third surface 130 and a fourth surface 140 connected end to end, the first surface 110 and the The third surface 130 is parallel to the second surface 120 and the fourth surface 140 is parallel. A receiving groove 111 is defined on the first surface 110 , the bottom surface of the receiving groove 111 is a first light-transmitting surface 1110 , and the first light-transmitting surface 1110 is parallel to the first surface 110 . A notch 141 is defined at the intersection of the third surface 130 and the fourth surface 140 . The notch 141 includes a sidewall parallel to the fourth surface 140 , and the sidewall is the second transparent surface 112 . A groove 131 is defined on the third surface 130 , and a side surface of the groove 131 is inclined from the third surface 130 to the second surface 120 , and the side surface is the reflective surface 113 . The reflective surface 113 is used to change the transmission direction of light between the photoelectric assembly 30 and the optical fiber assembly 40 .

A plurality of first lenses 1110 a are distributed in matrix on the first light-transmitting surface 1110 , and a plurality of second lenses 1120 corresponding to the first lenses 1110 a are disposed on the second light-transmitting surface 112 . The number of the first lenses 1110 a and the second lenses 1120 are equal and arranged in the same manner. In this embodiment, the number of the first lenses 1110a is 30, and it can be understood that the number of the first lenses 1110a can be increased or decreased according to requirements. The plurality of first lenses 1110 a are distributed throughout the first light-transmitting surface 1110 , so that the light turning element 10 can be fully utilized.

Each photoelectric combination 30 includes a light emitting element 310 and a photodetection element 320 . The light emitting element 310 is a light emitting diode (LED) or a laser diode (LD). The photodetection element 320 is a photodiode (PD). The fiber assembly 40 includes a plurality of input fibers 410 and a plurality of output fibers 420 . Each light emitting element 310 corresponds to a first lens 1110 a , a second lens 1120 and an output optical fiber 420 , and each photodetection element 320 corresponds to a first lens 1110 a , a second lens 1120 and an input optical fiber 410 . The reflective surface 113 is specifically used to change the transmission direction of the light emitted by the light emitting element 310 and the light input by the input optical fiber 410 . In this embodiment, the included angles between the reflective surface 113 and the optical axis of the first lens 1110 a or the second lens 1120 are both 45 degrees.

In this embodiment, the optical fiber assembly 40 is integrated together, that is, multiple input optical fibers 410 and multiple output optical fibers 420 are integrated into one body, which is more convenient to take and install. The number and arrangement of the input optical fiber 410 and the output optical fiber 420 are the same as those of the photodetection element 320 and the light emitting element 310 respectively.

When using the optical communication module 100, if an optical signal is output, the light emitted by the light-emitting element 310 of the photoelectric combination 30 is incident on the reflecting surface 113 through the first lens 1110a of the first light-transmitting surface 1110, and the optical signal is received by the After being reflected by the reflective surface 113 , it is transmitted to the second light-transmitting surface 112 , and the optical signal passes through the second lens 1120 and communicates through the output optical fiber 420 . If an optical signal is input, the optical signal is transmitted to the second light-transmitting surface 112 of the fourth surface 140 of the light turning element 10 through the input optical fiber 410, and then incident on the reflecting surface 113 through the second lens 1120, the light After the signal is reflected by the reflective surface 113, it goes to the first light-transmitting surface 1110, and the optical signal passes through the first lens 1110a and is received by the photodetection element 320, thereby realizing optical communication.

The optical communication module 100 includes a plurality of photoelectric assemblies 30 and a plurality of optical fiber assemblies 40 . A plurality of first lenses 1110a are distributed in matrix on the first light-transmitting surface 1110, and second lenses 1120 are correspondingly distributed on the second light-transmitting surface 112, so that each light emitting element 310 corresponds to one first lens 1110a and one second lens 1110a. Lens 1120 and an output optical fiber 420, each photodetection element 320 corresponds to a first lens 1110a, a second lens 1120 and an input optical fiber 410, using a reflective surface 113 to form multiple transmission channels, which can simultaneously transmit multiple optical signals . In this way, the utilization rate of the reflective surface 113 is improved, and the utilization rate of the light redirecting element 10 is further improved. In addition, this method of increasing the transmission channel does not increase the volume of the light redirecting element 10 , that is, it ensures the miniaturization of the entire optical communication module 100 while realizing multi-channel transmission.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. In addition, those skilled in the art can also make other changes within the spirit of the present invention. Of course, these changes made according to the spirit of the present invention should all be included within the scope of protection claimed by the present invention.

Claims (10)

1. An optical communication module, which includes a light steering element, a circuit board, a plurality of photoelectric combinations electrically connected to the circuit board, and a plurality of optical fiber combinations corresponding to the photoelectric combination, the light steering element includes a A first light-transmitting surface facing the circuit board, a second light-transmitting surface perpendicular to the first light-transmitting surface and facing the plurality of optical fibers, and a reflective surface, the first light-transmitting surface is distributed in a matrix A plurality of first lenses, a plurality of second lenses corresponding to the first lenses are provided on the second light-transmitting surface, each photoelectric combination includes a light-emitting element and a photodetection element, and the optical fiber combination includes a plurality of input optical fibers and a plurality of output optical fibers, each light-emitting element corresponds to a first lens, a second lens, and an output optical fiber, each photodetection element corresponds to a first lens, a second lens, and an input optical fiber, and the reflective surface is used for The transmission direction of the light emitted by the light-emitting element and the light input by the input optical fiber is changed. 2. The optical communication module according to claim 1, wherein the plurality of first lenses cover the entire first transparent surface. 3. The optical communication module according to claim 1, wherein the light turning element comprises a first surface, a second surface, a third surface and a fourth surface connected end to end, the first surface Parallel to the third surface, the second surface is parallel to the fourth surface. 4. The optical communication module according to claim 3, wherein a receiving groove is opened on the first surface, the bottom surface of the receiving groove is the first light-transmitting surface, and the first light-transmitting surface and the first light-transmitting surface The first surfaces are parallel. 5. The optical communication module according to claim 3, wherein a notch is formed at the intersection of the third surface and the fourth surface, the notch includes a side wall parallel to the fourth surface, the The side wall is the second light-transmitting surface. 6. The optical communication module according to claim 3, wherein a groove is formed on the third surface, and one side of the groove is inclined from the third surface to the second surface, The side is the reflective surface. 7. The optical communication module according to claim 1, wherein the light emitting element is a light emitting diode or a laser diode, and the photodetecting element is a photodiode. 8. The optical communication module according to claim 1, wherein a plurality of input optical fibers and a plurality of output optical fibers are integrated into one body. 9. The optical communication module according to claim 1, wherein the number and arrangement of the input optical fiber and the output optical fiber are the same as those of the photodetection element and the light emitting element respectively. 10 . The optical communication module according to claim 1 , wherein the included angles between the reflective surface and the first lens or the optical axis of the second lens are both 45 degrees. 11 .