EP-4737967-A1 - OPTICAL MODULE

EP4737967A1EP 4737967 A1EP4737967 A1EP 4737967A1EP-4737967-A1

Abstract

This disclosure provides an optical module (200) which includes:, a circuit board (300), on which a mounting hole (302) is formed; an optical emission component (400) embedded in the mounting hole (302), the optical emission component (400) includes an emission base (410) embedded in the mounting hole (302), a light emitting assembly disposed on the emission base (410) and connected to the circuit board (300) through wire bonding to generate 2N paths of optical signals, wherein N≥1, and a collimating lens group (440) located in output optical path of the light emitting assembly; a first optical reception component (510) disposed on the circuit board (300) to receive N paths of optical signals, the first optical reception component (510) is connected to a surface of the circuit board (300); a second optical reception component (520) disposed on the circuit board (300) to receive N paths of optical signals, the second optical reception component (520) is connected to a surface of the circuit board; a second optical fiber (721) connected to the first optical reception component (510) and passes by a side of the emission base (410), and a third optical fiber (731) connected to the second optical reception component (520) and passes by a side of the emission base (410).

Inventors

SUN, WANJU
ZHENG, LONG
CUI, Feng
XU, Fabu

Assignees

Hisense Broadband Multimedia Technologies Co., Ltd

Dates

Publication Date: 20260506
Application Date: 20240628

Claims (15)

An optical module, comprising: a circuit board, the circuit board being formed thereon with a mounting hole; an optical emission component embedded into the mounting hole, and the optical emission component comprising: an emission base embedded and connected in the mounting hole; a light emitting assembly disposed on the emission base, the light emitting assembly being connected to a surface of the circuit board through wire bonding and configured to generate 2N paths of optical signals, wherein N≥1; a collimating lens group disposed on the emission base and located in an output optical path of the light emitting assembly; a first optical reception component disposed on the circuit board and configured to receive N paths of optical signals, and the first optical reception component is connected to a surface of the circuit board; a second optical reception component disposed on the circuit board and configured to receive N paths of optical signals, and the first optical reception component is connected to a surface of the circuit board; and an optical transmission assembly comprising a second optical fiber and a third optical fiber, wherein the second optical fiber is connected to the first optical reception component and passes by a side of the emission base, and the third optical fiber is connected to the second optical reception component, and the second optical fiber passes by a side of the emission base.
The optical module according to claim 1, wherein a top of the emission base is formed with a first mounting surface, a first baffle plate and a second baffle plate are formed on the first mounting surface, and a second mounting surface is formed between the first baffle plate and the second baffle plate; the first mounting surface is connected to a back surface of the circuit board; the first baffle plate and the second baffle plate are limited by and connected to the mounting hole; a combiner group or a third optical fiber-fixing head is disposed on the second mounting surface, and the first baffle plate or the second baffle plate limits and connects the combiner group or the third optical fiber-fixing head; the optical emission component further comprises an emission cover plate, wherein a bottom of the cover plate is connected to a front surface of the circuit board, and the first baffle plate and the second baffle plate limit and connect to the emission cover plate.
The optical module according to claim 1, wherein the optical emission component comprises a third optical fiber connecting head, the optical transmission assembly further comprises a first optical fiber, and the third optical fiber connecting head is fixedly connected to an end of the first optical fiber; a second mounting surface is formed on the emission base, and a plurality of second support platforms are disposed on the second mounting surface, wherein there is a gap between adjacent second support platforms, and the second support platforms support and connect a bottom of the third optical fiber connecting head; a first support platform is provided on the second mounting surface, and a first limiting post and a second limiting post are disposed at an edge of the first support platform, wherein the first limiting post and the second limiting post limit and connect to a light output end of the third optical fiber connecting head.
The optical module according to claim 2, wherein the combiner group comprises a first combiner and a second combiner arranged side by side on the the second mounting surface; the optical transmission assembly further comprises a first optical fiber, the optical emission component further comprises a first optical fiber-fixing head and a second optical fiber-fixing head which are respectively connected to the first optical fiber; one end of the first mounting surface is formed with a mounting platform; a third mounting surface is arranged at edges of the mounting platform, and the first optical fiber-fixing head and the second optical fiber-fixing head are fixedly connected on the third mounting surface, the first optical fiber-fixing head being limited and connected to one side of the mounting platform, and the second optical fiber-fixing head being limited and connected to the other side of the mounting platform; or the mounting platform is formed thereon with a first through hole and a second through hole, wherein the first optical fiber-fixing head is inserted into the first through hole, and the second optical fiber-fixing head is inserted into the second through hole; the first optical fiber-fixing head is located in an output optical path of the first combiner, and the second optical fiber-fixing head is located in an output optical path of the second combiner.
The optical module according to claim 3, wherein the optical emission component further comprises an isolator group, and the isolator group comprises a first isolator bracket, a second isolator bracket and a plurality of isolators, wherein the first isolator bracket supports and connects multiple isolators, and the second isolator bracket supports and connects multiple isolators; the first support platform supports and connects the first isolator bracket and the second isolator bracket, the first limiting post limits and connects the first isolator bracket, and the second limiting post limits and connects the second isolator bracket.
The optical module according to claim 1, further comprising a wire-restraining member, wherein the wire-restraining member comprises a bridging plate, a first support arm, a second support arm, a first limiting arm and a second limiting arm; one end of the first support arm is connected to one end of the bridging plate, one end of the second support arm is connected to the other end of the bridging plate, and the other end of the first support arm and the other end of the second support arm are connected to the circuit board; the first limiting arm and the second limiting arm are located between the first support arm and the second support arm, and the first limiting arm and the second limiting arm are embeded into the mounting hole; the second optical fiber passes through a gap between the first limiting arm and the first support arm, and the third optical fiber passes through a gap between the second limiting arm and the second support arm.
The optical module according to claim 1, wherein the first optical reception component comprises a reception fixing head and a detector group, wherein the detector group is arranged on the circuit board, and the reception fixing head is connected to the circuit board; the reception fixing head comprises an optical fiber-supporting portion and an optical fiber-fixing portion; an end of the second optical fiber extends from one end of the optical fiber-supporting portion to the other end of the optical fiber-supporting portion; and the optical fiber-fixing portion covers and connects the optical fiber-supporting portion to fix and connect the second optical fiber through the optical fiber-supporting portion and the optical fiber-fixing portion.
The optical module according to claim 3, further comprising an upper shell part, a lower shell part and an optical fiber-fixing component, the optical transmission assembly further comprising a first optical fiber adapter, a second optical fiber adapter, a third optical fiber adapter and a fourth optical fiber adapter, wherein the first optical fiber adapter and the second optical fiber adapter are respectively connected to the first optical fiber, the third optical fiber adapter is connected to the second optical fiber, and the fourth optical fiber adapter is connected to the third optical fiber; the optical fiber-fixing component comprises an optical fiber bracket, a first gasket and a second gasket, and the first optical fiber adapter, the second optical fiber adapter, the third optical fiber adapter and the fourth optical fiber adapter are assembled and connected to the optical fiber bracket in layers; the first gasket is sleeved on the second optical fiber adapter and the third optical fiber adapter, and the second gasket is sleeved on the first optical fiber adapter and the fourth optical fiber adapter; the upper shell part and the lower shell part squeeze the optical fiber bracket, the first gasket and the second gasket to fix the third optical fiber adapter and the fourth optical fiber adapter.
The optical module according to claim 3, further comprising a lower shell part and an optical fiber-fixing component, wherein a connection seat is formed at one end of the lower shell part, and the connection seat is provided thereon with a plurality of insertion holes; the optical transmission assembly further comprises a first optical fiber adapter, a second optical fiber adapter, a third optical fiber adapter and a fourth optical fiber adapter, and front ends of the first optical fiber adapter, the second optical fiber adapter, the third optical fiber adapter and the fourth optical fiber adapter are respectively inserted into the insertion holes; the optical fiber-fixing component comprises an optical fiber-fixing frame and a gasket, wherein the optical fiber-fixing frame is located at a side of the connection seat, and the optical fiber-fixing frame supports and connects the first optical fiber adapter, the second optical fiber adapter, the third optical fiber adapter and the fourth optical fiber adapter; the optical fiber-fixing frame cooperates and connects with the connection seat and the gasket to fix and connect the third optical fiber adapter and the fourth optical fiber adapter.
The optical module according to claim 9, wherein the optical fiber-fixing frame comprises: a fixing plate fixedly connected to the lower shell part, wherein the fixing plate is formed thereon with a first assembly hole, and an edge of the fixing plate is formed with a slit communicated to the first assembly hole; the optical fiber passes through the slit such that the optical fiber adapter is assembled and connected in the first assembly hole, so as to fix and support the optical fiber adapter through the first assembly hole; a connecting plate located at a bottom of the fixing plate and configured to assemble and connect with the lower shell part; a first fixing arm connected to one side of the fixing plate and configured to assemble and connect with a lower side plate of the lower shell part; and a second fixing arm connected to the other side of the fixing plate and configured to assemble and connect with a lower side plate of the lower shell part.
The optical module according to claim 2, wherein a second connection layer is arranged on the back surface of the circuit board and is located at an edge of the mounting hole, wherein the second connection layer is formed thereon with a first groove which breaks the second connection layer; and the first mounting surface is fixedly connected to the second connection layer.
The optical module according to claim 5, wherein a third connection layer is disposed on the circuit board below the first optical reception component, wherein the third connection layer comprises a welding portion, the welding portion being located at a side of the third connection layer away from the mounting hole; and the first optical reception component comprises a detector group disposed on the welding portion; a blocking groove is formed on the third connection layer, and the blocking groove is located at an edge of the welding portion; the blocking groove extends from the edge of the welding portion in a direction away from the third connection layer and away from the welding portion.
The optical module according to claim 1, further comprising an upper shell part, on which a heat dissipation component is arranged, wherein the heat dissipation component comprises a heat dissipation fin and a heat dissipation cover plate, the heat dissipation fin extends along a length direction of the upper shell part, a top of the heat dissipation fin is connected to the heat dissipation cover plate, and the heat dissipation fin and the heat dissipation cover plate form a heat dissipation channel.
The optical module according to claim 8, wherein the optical fiber bracket comprises: a bracket plate which is laterally arranged in an optical port of the optical module; a first support group arranged on an upper side of an end of the bracket plate, wherein the first support group comprises support plates arranged side by side in sequence, with a gap between adjacent support plates; and the first support group is configured to assemble and connect the second optical fiber adapter and the third optical fiber adapter; and a second support group arranged on a lower side of the end of the bracket plate, wherein the second support group comprises support plates arranged side by side in sequence, with a gap between adjacent support plates; and the second support group is configured to assemble and connect the first optical fiber adapter and the fourth optical fiber adapter; the first gasket is assembled and connected to the first support group, and the second gasket is assembled and connected to the second support group.
The optical module according to claim 14, wherein the optical fiber bracket further comprises: a first assembly column arranged on an upper side of the bracket plate and extended from one end of the bracket plate to a side of the first support group; a second assembly column arranged on a lower side of the bracket plate and extended from one end of the bracket plate to a side of the second support group; and a third assembly column located at a side of the second support group, and a top of the third assembly column is extended to the upper side of the bracket plate.

Description

This disclosure claims priorities to Chinese application No. 2023107984710 filed on June 30, 2023 with the China National Intellectual Property Administration, Chinese application No. 2023217082766 filed on June 30, 2023 with the China National Intellectual Property Administration, Chinese application No. 202323147129.9 filed on November 21, 2023 with the China National Intellectual Property Administration, Chinese application No. 2024108430980 filed on June 27, 2024 with the China National Intellectual Property Administration, Chinese application No. 2024108430389 filed on June 27, 2024 with the China National Intellectual Property Administration; Chinese application No. 202410843043X filed on June 27, 2024 with the China National Intellectual Property Administration, Chinese application No. 2024214874081 filed on June 27, 2024 with the China National Intellectual Property Administration, Chinese application No. 2024214875370 filed on June 27, 2024 with the China National Intellectual Property Administration, and Chinese application No. 202421488349X filed on June 27, 2024 with the China National Intellectual Property Administration, the entire disclosures of which are incorporated herein by reference. FIELD OF THE INVENTION This disclosure relates to the technical field of optical fiber communication technology, particularly to an optical module. BACKGROUND OF THE INVENTION Optical communication technology is used in new services and application modes such as cloud computing, mobile internet, and video. In optical communication technology, the optical module is a device that realizes conversion of optical and electrical signals, and is one of the key devices in optical communication equipment. With development of the optical communication technology, transmission rate of the optical module has been continuously improved, especially in recent years, optical modules of 800G have been gradually introduced to the market. In order to achieve the transmission rate of 800G of the optical module, it is necessary to integrate 8 optical transmitters and 8 optical receivers in the QSFP-DD or OSFP package. To achieve the required functions in such a small space, it is a great challenge for high-frequency performance, optical performance, heat dissipation characteristics, structural complexity, manufacturability, etc. SUMMARY OF THE INVENTION This disclosure provides an optical module including a circuit board, an optical emission component, a first optical reception component, a second optical reception component and an optical transmission assembly. The circuit board is formed thereon with a mounting hole. The optical emission component includes an emission base, a light emitting assembly and a collimating lens group. The emission base is embedded in the mounting hole. The light emitting assembly is disposed on the emission base and is connected to a surface of the circuit board through wire bonding, for generating 2N paths of optical signals, wherein N≥1. The collimating lens group is disposed on the emission base and is located in an output optical path of the light emitting assembly. The first optical reception component is disposed on the circuit board and is configured to receive N paths of optical signals, and the first optical reception component is connected to a surface of the circuit board. The second optical reception component is disposed on the circuit board and is configured to receive N paths of optical signals, and the first optical reception component is connected to a surface of the circuit board. The optical transmission assembly includes a second optical fiber and a third optical fiber, wherein the second optical fiber is connected to the first optical reception component and passes by a side of the emission base. The third optical fiber is connected to the second optical reception component, and the second optical fiber passes by a side of the emission base. BRIEF DESCRIPTION OF THE DRAWINGS In order to illustrate technical solutions disclosed in this disclosure more clearly, a brief description on the accompanying drawings required in some embodiments of this disclosure will be given below. It is obvious that the accompanying drawings described below are only those of some embodiments of this disclosure, and for those skilled in the art, other accompanying drawings may also be obtained based on these drawings. In addition, the accompanying drawings described below may be regarded as schematic diagrams and are not intend to limit actual size of the relevant products, actual process of the relevant methods, actual timing of signals or the like involved in the disclosed embodiments. FIG. 1 is a partial structural diagram of an optical communication system provided according to some embodiments of this disclosure;FIG. 2 is a partial structural diagram of a host computer provided according to some embodiments of this disclosure;FIG. 3 is a structural diagram of an optical module provided according t