CN112748502A

CN112748502A - Optical transceiver module and optical fiber cable module

Info

Publication number: CN112748502A
Application number: CN201911053739.8A
Authority: CN
Inventors: 张骏扬; 黄云晟; 李文贤; 吕政鸿; 陈珉儒; 吴昌成
Original assignee: Usenlight Corp
Current assignee: Usenlight Corp
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2021-05-04

Abstract

The invention provides an optical transceiver module and an optical fiber cable module. The optical transceiver module comprises a substrate, a light receiving component and a plurality of light emitting components. The light receiving components are arranged on the substrate, and the light emitting components are connected to the substrate, wherein the light emitting components are arranged in a staggered mode. The optical fiber cable module comprises an optical transceiver module and an optical fiber cable. The optical transceiver of the present invention can realize miniaturization of an optical module.

Description

Optical transceiver module and optical fiber cable module

Technical Field

The present invention relates to the field of optical fiber communication technologies, and in particular, to an optical transceiver module and an optical fiber cable module using the same.

Background

In the application of optical fiber communication technology, it is necessary to convert an electrical signal into an optical signal through an optical transmission component (such as a laser), and then couple the optical signal into an optical fiber conducting the optical signal.

Currently, the demand for computing devices continues to rise, and even the demand for computing devices to achieve higher performance is increasing. However, conventional electrical I/O (input/output) signaling is not expected to keep pace with the need for increased performance, particularly with the expectation of future high performance computations. Today, I/O signals are electrically routed from processor to processor and out to peripheral devices via circuit boards. Electrical signals must pass through solder joints, cables, and other electrical conductors. Thus, the electrical I/O signal rate is limited by the electrical characteristics of the electrical connector.

Conventional telecommunication transmission systems are gradually being replaced by optical fiber transmission systems. Since the optical fiber transmission system has advantages of high speed transmission, long transmission distance, and no electromagnetic wave interference, the optical fiber transmission system is not limited by bandwidth, and therefore, the electronic industry is currently developing in the direction of optical fiber transmission.

However, in recent years, further miniaturization of optical modules such as optical transceivers is required, and therefore, it is necessary to optimize the structure of an optical fiber transmission system.

Disclosure of Invention

In order to solve the existing problems, the invention provides an optical transceiver module to reduce the complexity of the optical transceiver module and to miniaturize the volume of the optical transceiver module.

To achieve the above and other objects, the present invention provides an optical transceiver module: comprises that

A housing;

a substrate disposed within the housing;

a light receiving assembly disposed on the substrate;

the light emitting components are connected to the substrate, the light emitting components are arranged in a staggered mode, and an included angle is formed between the light emitting directions of the light emitting components and ranges from 90 degrees to 180 degrees.

In various embodiments, the substrate may include at least one protrusion protruding from the substrate and at least one recess formed on at least one side of the protrusion. The circuit or the IC chip may be formed on the convex surface of the substrate to increase the layout area of the circuit.

In various embodiments, the optical transceiver module further includes a connection plate through which the light emitting assembly is allowed to be disposed within the recess of the substrate and connected to the substrate.

In various embodiments, the substrate may have a plurality of convex shapes, and the plurality of concave portions may be respectively located at opposite sides of the convex portions.

In various embodiments, the plurality of recesses may have different lengths or depths.

In various embodiments, the substrate may have at least one L-shape, and at least one recess may be located on at least one side of the protrusion.

In various embodiments, the substrate may have at least one stepped shape, and the plurality of concave portions may be located at least one side of the convex portion.

In different embodiments, the first surface and the second surface of the substrate opposite to each other may be provided with different circuits for providing circuits, chips or components with different functions.

In various embodiments, the light emitting assembly may be connected to the substrate by a connection plate.

In various embodiments, the connection board may include a Flexible Printed Circuit (FPC) or a Flexible Printed Circuit (FPC) for transmitting signals between the substrate and the light emitting element.

In various embodiments, the connection plate may include a first connection plate and a second connection plate.

In some embodiments, one end of the first connection plate may be connected to the first surface of the base plate, and one end of the second connection plate may be connected to the second surface of the base plate.

In some embodiments, the first and second connection plates may have different lengths.

In various embodiments, one end of the connecting plate may have a bent structure and be connected to the light emitting assembly.

In different embodiments, the plurality of light emitting elements may be respectively disposed on the upper and lower sides of the substrate and staggered.

In various embodiments, the light emitting elements can be respectively disposed on the same side of the substrate and staggered.

In different embodiments, the plurality of light emitting elements are more than two light emitting elements, and are arranged in a staggered manner.

In various embodiments, the light emitting device and the substrate may have an inclination angle therebetween, and the inclination angle therebetween may be smaller than 90 degrees, such as 30 degrees, 60 degrees, or 45 degrees.

In various embodiments, each light emitting assembly may further comprise a temperature control unit.

In various embodiments, the position and arrangement of the light emitting elements in the optical transceiver module may be fixed by a holder.

In some embodiments, the retainer may be integrally formed on the housing.

In various embodiments, the holder may include a first holder and a second holder for holding the plurality of light emitting elements and allowing the light emitting elements to be staggered.

In various embodiments, the first retainer may be disposed on the upper housing, for example, and the second retainer may be disposed on the lower housing, for example.

In different embodiments, the holder may include at least one fixing groove, and the shape of the fixing groove corresponds to the shape of the light emitting element for receiving and engaging the light emitting element to fix the light emitting element.

In various embodiments, the shape of the fixing groove may also be formed corresponding to the inclination angle of the light emitting assembly, so that the light emitting assembly is obliquely fixed.

In various embodiments, the light receiving elements may be staggered, and the light receiving directions of the light emitting elements have an included angle between 90 degrees and 180 degrees.

In various embodiments, the light receiving element and the substrate may have an inclination angle therebetween, and the inclination angle between the light receiving element and the substrate may be smaller than 90 degrees, for example, between 0 degree and 90 degrees, such as 1 degree, 5 degrees, 30 degrees, 60 degrees, or 45 degrees.

The present invention also provides a fiber optic cable module, comprising:

a fiber optic cable;

an optical transceiver module comprising:

a housing;

a substrate disposed within the housing;

a light receiving assembly disposed on the substrate;

The invention provides an optical transceiver module, which realizes the miniaturization and compactness (compact design) of the optical transceiver module, effectively utilizes the internal space of the optical transceiver module, and has simple structure and easy manufacture.

Drawings

FIG. 1 is a block diagram of one embodiment of a system using the optical cable module of the present invention;

fig. 2 to 4 are schematic diagrams of an optical transceiver module according to an embodiment of the invention;

FIGS. 5A-9 are schematic views of different embodiments of a substrate according to the present invention;

FIGS. 10-11 are schematic views of different embodiments of a light emitting assembly and a substrate according to the present invention;

FIG. 12 is a schematic view of one embodiment of a light emitting assembly of the present invention;

FIG. 13 is a schematic view of one embodiment of a light emitting assembly of the present invention;

FIG. 14 is a diagram of an optical transceiver module according to an embodiment of the present invention;

FIGS. 14A and 14B are schematic views of a light emitting holder according to the present invention;

FIGS. 15-17 are schematic views of different embodiments of the substrate of the present invention;

FIG. 18 is a schematic view of a light receiving element and a substrate according to one embodiment of the invention;

FIGS. 19A and 19B are schematic views of a light receiving fixture according to an embodiment of the present invention;

FIG. 20 is a schematic view of a light receiving element and a substrate according to one embodiment of the invention;

fig. 21 to 27 are schematic views of different embodiments of the optical transceiver module of the present invention;

FIG. 28 is a schematic view of an embodiment of a light emitting assembly of the present invention;

FIG. 29 is a schematic view of one embodiment of a light emitting assembly of the present invention;

FIGS. 30A and 30B are schematic diagrams of a light-receiving chip according to an embodiment of the invention;

FIG. 31A is a schematic view of a light receiving module and a light receiving fixture according to an embodiment of the invention;

fig. 31B is a schematic view of a light receiving fixture according to an embodiment of the invention.

Detailed Description

The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced. In the present invention, directional terms such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", etc. refer to directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention.

The drawings and description are to be regarded as illustrative in nature, and not as restrictive. In the drawings, elements having similar structures are denoted by the same reference numerals. In addition, the size and thickness of each component shown in the drawings are arbitrarily illustrated for understanding and ease of description, but the present invention is not limited thereto.

In the drawings, the thickness of layers, films, panels, regions, etc. are exaggerated for clarity. In the drawings, the thickness of some layers and regions are exaggerated for understanding and convenience of description. It will be understood that when an element such as a layer, film, region or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present.

In addition, in the description, unless explicitly described to the contrary, the word "comprise" will be understood to mean that the recited components are included, but not to exclude any other components. Further, in the specification, "on.

Referring to fig. 1, the present embodiment provides an optical cable module 100, and fig. 1 is a flowchart illustrating a process for using the optical cable module 100, where the optical cable module 100 includes an optical transceiver module 110, an optical fiber cable 130 and an electronic device 101. The electronic device 101 may be any of a number of computing or display devices including, but not limited to, a data center, a desktop or laptop computer, a notebook computer, an ultra-thin notebook, a tablet computer, a notebook, or other computing device. In addition to computing devices, it is understood that many other types of the electronic devices 101 may include one or more of the optical transceiver modules 110 and/or the matching ports 102 described in this disclosure, and that the embodiments described in this disclosure are equally applicable to such electronic devices. Examples of such other electronic devices 101 may include electric vehicles, handheld devices, smart phones, media devices, Personal Digital Assistants (PDAs), ultra mobile personal computers, mobile phones, multimedia devices, memory devices, cameras, voice recorders, I/O devices, servers, set-top boxes, printers, scanners, monitors, televisions, electronic billboards, projectors, entertainment control units, portable music players, digital cameras, internet access devices, gaming apparatuses, game consoles, or any other electronic device 101 that may include the optical transceiver module 110 and/or the matching port 102. In other embodiments, the electronic device 101 may be any other electronic device that processes data or images.

As shown in fig. 1, the optical fiber cable 130 is connected to the optical transceiver module 110 for transmitting optical signals. The fiber optic cable 130 may include at least one or more optical fiber cores for allowing optical signals to be transmitted within the optical fiber cores.

Referring to FIG. 1, the electronic device 101 may include a processor 103, which may represent any type of processing element for processing electrical and/or optical I/O signals. It will be appreciated that the processor 103 may be a single processing device, or a plurality of separate devices. The processor 103 may include or be a microprocessor, a programmable logic device or array, a microcontroller, a signal processor, or some combination.

Referring to fig. 1, the matching port 102 of the electronic device 101 can be used as an interface to connect to the optical transceiver module 110. The optical transceiver module 110 may allow another peripheral device 105 to be interconnected with the electronic device 101. The optical transceiver module 110 of the present embodiment can support communication via an optical interface. In various embodiments, the optical transceiver module 110 may also support communication over an electrical interface.

Referring to FIG. 1, the peripheral device 105 may be a peripheral I/O device. In various embodiments, the peripheral device 105 may be any of a variety of computing devices including, but not limited to, a desktop or laptop computer, a notebook computer, an ultra-thin notebook, a tablet computer, a notebook, or other computing device. In addition to computing devices, it is understood that the peripheral device 105 may include an electric vehicle, a handheld device, a smart phone, a media device, a Personal Digital Assistant (PDA), a mobile personal computer, a mobile phone, a multimedia device, a memory device, a camera, a voice recorder, an I/O device, a server, a set-top box, a printer, a scanner, a monitor, a television, an electronic billboard, a projector, an entertainment control unit, a portable music player, a digital camera, a web device, a game apparatus, a game console, or other electronic devices.

Referring to fig. 1, in one embodiment, the electronic device 101 may also include an internal optical path. The optical path may represent one or more components, which may include processing and/or terminating components that convey an optical signal between the processor 103 and the matching port 102. Transmitting a signal may include generating and converting to optical, or receiving and converting to electrical. In one embodiment, the device may also include an electrical path. Electrical paths represent one or more components that carry an electrical signal between the processor 103 and the mating port 102.

Referring to fig. 1, the optical transceiver module 110 can be used to correspondingly mate with the matching port 102 of the electronic device 101. In this embodiment, mating a connector plug with another may be used to provide a mechanical connection. Mating a connector plug with another typically also provides a communication connection. The mating port 102 may include a housing 104 that may provide the mechanical connection mechanism. The mating port 102 may include one or more optical interface components. Path 106 may represent one or more components that may include processing and/or termination components for passing optical signals (or optical and electrical signals) between the processor 103 and the matching port 102. Transmitting signals may include generating and converting to optical signals, or receiving and converting to electrical signals.

Referring to fig. 1, the optical transceiver module 110 of the present invention can be referred to as an optical connector or an optical connector. Generally, such an optical connector may be used to provide a physical connection interface with a mating connector and an optical component. The optical transceiver module 110 may be an optical engine for generating optical signals and/or receiving and processing optical signals. The optical transceiver module 110 may provide conversion from electrical-to-optical signals or from optical-to-electrical signals.

In some embodiments, the optical transceiver module 110 may be configured to process the optical signals in accordance with or according to one or more communication protocols. For embodiments in which the optical transceiver module 110 is used to transmit an optical signal and an electrical signal, the optical interface and the electrical interface may be based on the same protocol, but this is not absolutely necessary. Regardless of whether the optical transceiver module 110 processes signals according to the protocol of the electrical I/O interface, or according to a different protocol or standard, the optical transceiver module 110 may be configured or programmed within a particular module for a desired (integrated) protocol, and different transceiver modules or optical engines may be configured for different protocols.

Please refer to fig. 2-4, which are schematic diagrams illustrating an optical transceiver module according to an embodiment of the present invention. The optical transceiver module 110 of the present embodiment may include a substrate 111, a processor 112, a light emitting element 113, a light receiving element 114, a connector 115, a housing 116, a connecting plate 117, and a light emitting holder 118. The substrate 111 may have a first surface 111a and a second surface 111b opposite to each other, and the substrate 111 may be a Printed Circuit Board (PCB) or a ceramic substrate, for example, and may include pins or connection balls for interfacing to an external device, for example. The processor 112 is connected to the substrate 111, and the processor 112 may be any type of processor die or optical IC, and is not limited to any particular processor type. The light emitting device 113 and the light receiving device 114 are connected to the processor 112 on the substrate 111 for emitting and receiving light signals, respectively. The optical transmitter module 113 and the optical receiver module 114 may include a transmitter circuit and a receiver circuit for transmitting electrical signals, and more particularly, for processing timing or other protocol aspects of the electrical signals corresponding to the optical signals. The housing 116 may have an inner space for accommodating the substrate 111, the processor 112, the light emitting element 113, the light receiving element 114, the connector 115, the connecting plate 117 and the light emitting holder 118. The connection board 117 is connected between the substrate 111 and the light emitting module 113, and the light emitting holder 118 is used to position and fix the light emitting module 113 so as to maintain the performance loss and reliability of the connection between the optical fiber channel and the light receiving/transmitting module.

Referring to fig. 4 to 9, the substrate 111 is disposed in the housing 116, the substrate 111 may include at least one protrusion 111c and at least one recess 111d, the protrusion 111c protrudes from the substrate 111, and the recess 111d is formed on at least one side of the protrusion 111 c. Wherein, the light emitting component 113 can be accommodated in the concave portion 111 d. That is, the light emitting element 113 may be disposed on at least one side of the protrusion 111 c. It is noted that a circuit or an IC chip may also be formed on the surface of the protrusion 111c of the substrate 111 to increase the area of the circuit.

In various embodiments, as shown in fig. 5 to 7, the substrate 111 may have one or more convex shapes, and in this case, the plurality of concave portions 111d may be respectively located at opposite sides of the convex portion 111 c. As shown in fig. 7, the plurality of concave portions 111d may have different lengths or depths. Thus, different sizes of the light emitting elements 113 can be accommodated as required. Furthermore, the convex shape of the substrate 111 can isolate different circuits (e.g. flexible circuit boards connected to the light emitting device 113) to avoid the mutual interference caused by the spatial overlapping.

In various embodiments, as shown in fig. 8, the substrate 111 may have at least one L-shape, and at least one concave portion 111d may be located on at least one side of the convex portion 111 c. As shown in fig. 9, the substrate 111 may have at least one step shape, and at this time, a plurality of concave portions 111d may be located at least one side of the convex portion 111 c.

In addition, in some embodiments, the first surface 111a and the second surface 111b of the substrate 111 can be provided with different circuits for providing different functional circuits, chips or components. For example, the light receiving element 114 may be disposed on the first surface 111a of the substrate 111, and the processor 112 and an IC chip (such as, but not limited to, an LDD, PA, CDR, DSP chip, etc.) may be disposed on the second surface 111b of the substrate 111. Thus, the space for disposing the circuit or the chip can be increased, and the size of the substrate 111 can be reduced correspondingly. In some embodiments, the light receiving element 114 may also be fixed on the first surface 111a of the substrate 111 by a chip on board (chip on board) method.

In the present embodiment, the optical transceiver module 110 can be applied to a Parallel transmission over four fiber channels (PSM 4), for example, in which light with different wavelengths from four laser sources is guided into an optical fiber through a plurality of light emitting elements 113, and medium-and long-distance transmission is performed through the optical fiber. The light receiving element 114 can receive the optical signals and can guide the processed optical signals to different channels respectively. However, the optical transceiver module 110 can be applied to various multi-fiber channel Wavelength Division Multiplexing (WDM) besides the PSM4 technology, such as but not limited to: binary Phase Shift Keying (BPSK), four-bit Phase Shift Keying (QPSK), Coarse Wavelength Division Multiplexing (DWDM), Dense Wavelength Division Multiplexing (DWDM), Optical Add/Drop Multiplexing (OADM), tunable Optical Add/Drop Multiplexing (ROADM), LR4, or similar related Optical communication techniques.

As shown in fig. 4, one or more light emitting elements 113 may be connected to the substrate 111 by a connecting plate 117, and the light emitting elements 113 may be arranged in a staggered manner. The light emitting directions (i.e. the emitting directions of the optical signals) of the light emitting elements 113 have an included angle, which is, for example, between 90 degrees and 180 degrees, that is, the light emitting elements 113 may be arranged in a staggered manner. When the light emitting elements 113 are arranged in a staggered manner, the light emitting directions of the light emitting elements 113 may be opposite to each other or different from each other, i.e. the included angle between the light emitting directions of the light emitting elements 113 is about 180 degrees.

As shown in fig. 4, each light emitting assembly 113 includes a light emitter 113a, a sealed housing 113b and a cylinder 113c, and the light emitter 113a is completely sealed in one or more sealed housings 113b, i.e. the light emitter 113a in the light emitting assembly 113 does not contact the external environment or air outside the light emitting assembly 113, so as to prevent the components of the light emitter 113a from aging, ensure the performance of the components of the light emitter 113a, and greatly prolong the service life of the components. The light emitting device 113 is sealed TO meet the hermetic sealing requirement of the TO (Transmitter Optical Sub-Assembly) type package for industrial use. For example, the sealing degree of each of the plurality of light emitting elements 113 may be 1 × 10^-12～5x10^-7(atm*cc/sec)。

In various embodiments, the wavelength of the optical signal emitted by the optical emitter 113a of the optical emitting assembly 113 may be in the range from near infrared light to infrared light, approximately 830 nanometers (nm) to 1660 nm. The optical transmitter 113a may be any type of laser chip suitable for generating an optical signal (e.g., edge-emitting laser device, FP/DFB/EML laser, or vertical cavity surface emitting laser, VCSEL).

In various embodiments, the light emitter 113a can be directly sealed in the sealed housing 113b without an exposed gap, so as to ensure the sealing performance of the light emitting assembly 113. In some embodiments, the sealed housing 113b is, for example, a cylindrical housing. The cylindrical member 113c is provided on one side of the seal case 113 b. The barrel 113c may be provided with a light coupling lens (not shown), such as a convex lens or a spherical lens, inside for coupling the optical signal emitted from the optical transmitter 113a to an external optical fiber via the barrel 113 c. Therefore, the light emitting direction of each light receiving element is directed from the light emitter 113a in the hermetic case 113b toward the cylindrical member 113 c.

In various embodiments, the diameter or width of the seal type housing 113b is greater than the diameter or width of the cylinder 113 c. Thus, the front and back staggered arrangement of the light emitting elements 113 allows the light emitting elements 113 to be arranged more closely to reduce the space for arranging the light emitting elements 113, so that more light emitting elements 113 can be arranged and packaged in a small optical transceiver module 110, thereby realizing the miniaturization of the optical transceiver module.

As shown in fig. 10, in different embodiments, the plurality of light emitting elements 113 may be respectively located at the upper and lower sides of the substrate 111 and staggered, thereby realizing the staggered arrangement of the plurality of light emitting elements 113 at the upper and lower sides of the substrate 111.

As shown in fig. 11, in different embodiments, the light emitting elements 113 may be respectively located on the same side of the substrate 111 and staggered, thereby realizing the staggered arrangement of the light emitting elements 113 on the same side of the substrate 111.

As shown in fig. 12, in different embodiments, more than two (e.g., three or more) light emitting elements 113 may be staggered with respect to each other, so as to realize the staggered arrangement of more light emitting elements 113.

In some embodiments, as shown in fig. 4 and 10, an inclination angle may be formed between the light emitting device 113 and the substrate 111, that is, an inclination angle may be formed between the light emitting direction of the light emitting device 113 and the substrate 111, and the inclination angle between the light emitting device 113 and the substrate 111 may be smaller than 90 degrees, for example, 30 degrees, 60 degrees or 45 degrees. Accordingly, the light emitting elements 113 may be arranged obliquely to reduce the arrangement space of the light emitting elements 113. Specifically, in some embodiments, the tilt angle of the light emitting assembly 113 may be implemented and fixed by the light emitting fixture 118. However, the tilt angle of the light emitting device 113 can be realized and fixed by different structures or methods in different embodiments. For example, in some embodiments, the inclination angle of the light emitting element 113 may also be fixed by a fixing glue.

In the embodiment of the present invention, as shown in fig. 4, the light emitting elements 113 may also be arranged in a staggered manner and inclined at the same time. At this time, since the front and rear ends of the light emitting elements 113 have different sizes, they can be arranged more closely in the optical transceiver module 110, thereby achieving a more compact optical transceiver module.

Referring to fig. 13, in various embodiments, each light emitting assembly 113 may further include a temperature control unit 119, and the temperature control unit 119 may be disposed in the sealed housing 113 b. In some embodiments, the temperature control unit 119 may include a thermistor 119a and a thermoelectric cooler 119b, the thermistor 119a is fixed on the base of the light emitter 113a, the thermoelectric cooler 119b may be fixed in the sealed housing 113b near the light emitter 113a, for example, and the thermistor 119a is electrically connected to the thermoelectric cooler 119 b. In the present embodiment, the resistance of the thermistor 119a is changed according to the temperature of the light emitter 113a, so that the temperature of the light emitter 113a can be detected by the thermistor 119 a. Then, by controlling the current flowing direction of the thermoelectric cooler 119b, the temperature of the light emitter 113a can be cooled to control the light emitter 113a to operate in a reasonable temperature range (e.g., 40-50 degrees), so as to reduce the wavelength shift of the light emitter 113a caused by temperature variation. Furthermore, since the overall thermal load of the light emitting device 113 can be greatly reduced, the power consumption of the light emitting device 113 can be reduced. For example, the power consumption of a single light emitting element 113 can be reduced to 0.1-0.2W, and the power consumption of four light emitting elements 113 can be reduced to 0.4-0.8W. In the present embodiment, the thermistor 119a and the thermoelectric cooler 119b can be fixed on the base of the light emitter 113a by a thermal conductive adhesive, for example.

As shown in fig. 3, the connector 115 may provide a reorienting mechanism to change the light between the optical transceiver module 110 and some object external (e.g., another device) across an optical fiber (not shown). For example, the connector 115 may provide a reset direction of the optical signal through the reflective surface. The angle, general size and shape of the connector 115 is dependent on the wavelength of the light, as well as the materials used to make the coupler and the requirements of the overall system. In one embodiment, the connector 115 may be designed to provide a reorientation of vertical light from the substrate 111 and horizontal light to the substrate 111.

In addition, the size, shape, and configuration of the connectors 115 are related to the standard, which includes tolerances for mating of the respective connectors. Therefore, the layout (layout) of the connector for integrating the optical I/O devices can vary according to various standards. Those skilled in the art will appreciate that the optical interface requires a line-of-sight connection to have an optical signal transmitter (both of which may be referred to as a lens) that interfaces with a receiver. Therefore, the configuration of the connector will prevent the lens from being blocked by the corresponding electrical contact assembly. For example, optical interface lenses may be disposed on the sides, or above or below the contact assemblies, depending on the space available within the connector.

In the present embodiment, the connector 115 may be, for example, MPO (Multi-fiber Push On) format, and the optical fibers may be mated one-to-one in a Multi-channel manner. In some embodiments, the CWDM/WDM system may be utilized to achieve the specification of LR4 through the steps of splitting and demultiplexing.

As shown in fig. 3, the outer casing 116 is used for protecting and assembling the substrate 111, the processor 112, the light emitting devices 113, the light receiving devices 114 and the connecting board 117. In other embodiments, the optical transceiver module 110 may further include a planar optical-wave chip (PLC) and a modulator. The planar opto-wave chip provides a planar integrated assembly for the transmission and conversion of light into electrical signals and vice versa. It is understood that the functionality of a planar optical-wave chip (PLC) may also be integrated into the connector 115. In this embodiment, the housing 116 may include an upper housing 116a and a lower housing 116b, and the upper housing 116a and the lower housing 116b may be combined into a whole and may form an inner space to accommodate the substrate 111, the processor 112, the plurality of light emitting elements 113, the light receiving elements 114, and the connecting plate 117. In some embodiments, the housing 116 may be made of metal, for example, to have a function of not only electrically shielding the circuit enclosed therein, but also effectively dissipating heat generated by the electronic circuit to the outside of the housing 116.

As shown in fig. 4, the connecting plate 117 is connected between the substrate 111 and the light emitting device 113 for fixing the light emitting device 113 and allowing the light emitting device 113 to be electrically connected to the substrate 111. That is, the substrate 111 and the light emitting element 113 may transmit signals to each other through the connection plate 117. Specifically, the connection board 117 may be, for example, a Flexible Printed Circuit (FPC) or a Flexible Printed Circuit (FPC) for transmitting signals between the substrate 111 and the light emitting element 113.

Also, as shown in fig. 4, the light emitting element 113 may be allowed to be disposed in the recess 111d of the substrate 111 by the connection plate 117. Specifically, the connection plate 117 may be disposed in the recess 111d of the substrate 111 and connected to the substrate 111. And the light emitting assembly 113 may be disposed on the connection plate 117 and connected to the connection plate 117. Therefore, the light emitting element 113 is disposed in the recess 111d of the substrate 111 through the connection plate 117 and electrically connected to the substrate 111.

As shown in fig. 4, the connection plate 117 may include a first connection plate 117a and a second connection plate 117 b. In some embodiments, one end of the first connection plate 117a may be connected to the first surface 111a of the substrate 111, and one end of the second connection plate 117b may be connected to the second surface 111b of the substrate 111. Therefore, the light emitting elements 113 can be electrically connected to the circuits on the two opposite side surfaces of the substrate 111 through the first connecting plate 117a and the second connecting plate 117b, and can be arranged in a staggered manner in the vertical direction, so that the light emitting elements 113 can be arranged and packaged in a smaller optical transceiver module 110, thereby realizing miniaturization of the optical transceiver module.

However, in some embodiments, the first connecting plate 117a and the second connecting plate 117b may also be connected to the same side surface (the first surface 111a or the second surface 111b) of the substrate 111.

As shown in fig. 4, the first connection plate 117a and the second connection plate 117b may have different lengths. Specifically, in some embodiments, the length of the second connection plate 117b may be greater than the length of the first connection plate 117 a. Therefore, the light emitting elements 113 can be arranged in a staggered manner at the front and rear positions by the different lengths of the first connecting plate 117a and the second connecting plate 117b, so that the light emitting elements 113 can be arranged and packaged in a relatively small optical transceiver module 110, thereby realizing the miniaturization of the optical transceiver module.

As shown in fig. 4, one end of the connecting plate 117 may have a bending structure and is connected to the light emitting device 113, and the bending structure (not shown) may be bent corresponding to the inclination angle, position or other arrangement of the light emitting device 113 to correspond to the arrangement configuration of the light emitting device 113.

Furthermore, when the IC on the substrate 111 of the optical transceiver module 110 performs high-speed operation, large power consumption and heat are generated. At this time, the substrate 111 and the light emitting element 113 can be properly separated by the connecting plate 117, so as to prevent heat from directly transmitting to the light emitting element 113, thereby effectively reducing power consumption of the temperature control unit 119 and overall power consumption of the optical transceiver module 110.

As shown in fig. 14, in various embodiments, the position and arrangement of the light emitting components 113 in the optical transceiver module 110 can be fixed by the light emitting holder 118. Specifically, the light emitting holder 118 may be disposed on the housing 116 or the substrate 111 of the optical transceiver module 110 to hold the light emitting assembly 113. In some embodiments, the light emitting fixture 118 may be integrally formed on the housing 116, for example. In some embodiments, the light emitting holder 118 may include a first light emitting holder 118a and a second light emitting holder 118b for holding the plurality of light emitting elements 113 and allowing the light emitting elements 113 to be staggered. As shown in fig. 3, the first light emitting holder 118a may be disposed on the upper case 116a, for example, and the second light emitting holder 118b may be disposed on the lower case 116b, for example. Furthermore, the light emitting fixer 118 may include at least one fixing groove 118c, and the shape of the fixing groove 118c is corresponding to the shape of the light emitting device 113 (e.g. the shape of the sealed housing 113 or the cylindrical member 113 c) for receiving and engaging the light emitting device 113 to fix the light emitting device 113. Furthermore, the groove shape of the fixing groove 118c may also be formed corresponding to the inclination angle of the light emitting element 113, so that the light emitting element 113 is obliquely fixed.

Specifically, as shown in fig. 14A and 14B, the fixing grooves 118c of the light emitting fixtures 118 (e.g., the first light emitting fixture 118a and the second light emitting fixture 118B) may have an inclination angle, and the inclination angle of the fixing grooves 118c may be the same as that of the light emitting element 113 to fix the inclination angle of the light emitting element 113.

As shown in fig. 15, in some embodiments, the recess 111d of the substrate 111 may be a hollowed-out cavity formed on the substrate 111. As shown in fig. 16 and 17, the substrate 111 may have an I-shaped or F-shaped structure, since the plurality of recesses 111d are formed in the substrate 111. Therefore, a plurality of light emitting elements 113 can be accommodated on the substrate 111 through the plurality of recesses 111d on the substrate 111.

In various embodiments, the size of the substrate 111 may be designed to meet the requirements of QSFP28, QSFP + or Micro QSFP +, by the arrangement of the light emitting elements 113 and/or the design of the substrate 111. For example, in some embodiments, the width of substrate 111 may be about 11-18 mm, and in some embodiments, the length of substrate 111 may be about 58-73 mm to meet the requirements of QSFP + or QSFP 28. Therefore, by arranging the light emitting devices 113 and/or designing the substrate 111, a plurality of light emitting devices 113 can be arranged and packaged in a small-sized optical transceiver module 110, thereby realizing miniaturization of the optical transceiver module.

In various embodiments, the light receiving elements 114 may be staggered, and the light receiving directions of the light emitting elements have an included angle between 90 degrees and 180 degrees.

In various embodiments, the light receiving element 114 and the substrate may have a tilt angle therebetween, and the tilt angle therebetween may be smaller than 90 degrees, for example, between 0 degree and 90 degrees, such as 1 degree, 5 degrees, 30 degrees, 60 degrees, or 45 degrees.

As shown in fig. 18, in some embodiments, the light receiving assembly may be, for example, a barrel type light receiving assembly 114a, and may also be, for example, a cartridge-on-card type (TO-CAN) light receiving assembly. The sealing degree of the barrel-type light receiving element 114a is in accordance with the hermetic sealing requirement of the TO (Transmitter Optical Sub-Assembly) type package for industrial use. For example, the sealing degree of each of the plurality of cylindrical light receiving elements 114a may be 1 × 10-12 to 5 × 10-7(atm × cc/sec). In one embodiment, more specifically, the sealing degree of each of the plurality of cylindrical light receiving elements 114a may be 1x10 "9 to 5x 10" 8(atm cc/sec).

As shown in fig. 18, a plurality of barrel type light receiving modules 114a may be assembled by a light receiving holder 120. The light receiving holder 120 is used to assemble the plurality of barrel-type light receiving elements 114a into a single body, wherein the plurality of barrel-type light receiving elements 114a are fixed in the light receiving holder 120. The plurality of cylindrical light receiving elements 114a may be connected to the circuit on the substrate 111 through the connection plate 121. The connecting board 121 may be, for example, a Flexible Printed Circuit (FPC) or a Flexible Printed Circuit (FPC) for transmitting signals between the substrate 111 and the cylindrical light receiving element 114 a. Specifically, in an embodiment, as shown in fig. 18, the plurality of barrel-shaped light receiving elements 114a can be respectively connected to a first connection Pad (Pad)122a and a second connection Pad 122b on the substrate 111 through a connection board 121, wherein the first connection Pad 122a and the second connection Pad 122b can be attached and fixed on the substrate 111 by surface attachment and are electrically connected to a circuit (not shown) on the substrate 111.

As shown in fig. 19A and 19B, the light receiving fixture 120 may be provided with a plurality of fixing through holes 120a, and the number of the fixing through holes 120a may correspond to the number of the plurality of barrel-type light receiving elements 114a, so as to allow the barrel-type light receiving elements 114a to be inserted into the fixing through holes 120a, thereby fixing the plurality of barrel-type light receiving elements 114a in the light receiving fixture 120. The inner diameter or dimension of each of the fixing through holes 120a corresponds to the outer dimension of the barrel-shaped light-receiving element 114a, so as to tightly fit and fix the barrel-shaped light-receiving element 114a in the light-receiving holder 120. Specifically, for example, the barrel-type light receiving element 114a may have a first width and a second width (as shown in fig. 19) with different sizes, and the fixing through hole 120a also has a first inner aperture and a second inner aperture with different sizes, so as to correspond to the first width and the second width of the barrel-type light receiving element 114 a.

As shown in fig. 20, in an embodiment, the light receiving holder 120 may be fixed on the substrate 111 for fixing the plurality of barrel-type light receiving elements 114a on the substrate 111. However, in some embodiments, the light receiving fixture 120 may not be fixed on the substrate 111 (as shown in fig. 18).

It is noted that the light emitting element 113 and the light receiving element 114 may be arranged, combined, and/or configured differently in different embodiments. For example, in some embodiments, the light emitting element 113 and the light receiving element 114 may be disposed on the same side of the substrate 111. However, in some embodiments, the light emitting device 113 and the light receiving device 114 may be disposed on different sides of the substrate 111.

In some embodiments, the one or more light receiving elements 114 may be disposed on the substrate 111, and the one or more light emitting elements 113 may be obliquely disposed on one side of the substrate 111 (as shown in fig. 21) or the substrate 111 (as shown in fig. 22).

Also, in some embodiments, the one or more light receiving elements 113 may be disposed on the substrate 111, and the one or more light receiving elements 114 may be obliquely disposed on one side of the substrate 111 (as shown in fig. 23) or the substrate 111 (as shown in fig. 24).

However, in some embodiments, the light emitting device 113 and the light receiving device 114 may be disposed on one side (not shown) of the substrate 111 or on the substrate 111 (as shown in fig. 25) in an inclined manner.

It should be noted that, when one or more light receiving elements 114 can be disposed on one side of the substrate 111 (as shown in fig. 18), the light emitting element 113 can be disposed on the substrate 111 in parallel or obliquely (as shown in fig. 26 and 27).

Referring to fig. 28, in different embodiments, each light emitting assembly 113 may further include a damping unit 113d, support pillars (submount)113e, 113f and a base 113g, the light emitter 113a and the

bases

113e, 113f may be disposed in the sealed housing 113b, the light emitter 113a may be disposed on the base 113e, the damping unit 113d may be disposed between the sealed housing 113b and the

bases

113e, 113f, and the

support pillars

113e, 113f are disposed on the base 113 g.

As shown in fig. 28, the sealed housing 113b and the base 113g form a sealed space for accommodating the light emitter 113a and the

pillars

113e and 113 f. The

posts

113e, 113f extend from the base 113g to support circuit boards (submounts) 113h, 113i inside the light emitting assembly 113. The

pillars

113e and 113f may include a first pillar 113e and a second pillar 113f, and the second pillar 113f may be disposed at one side of the first pillar 113e and adjacent to the sealed housing 113 b. The first support 113e is used to support the first circuit board 113h, the light emitter 113a is electrically connected to the first circuit board 113h, the second support 113f is used to support the second circuit board 113i, and the second circuit board 113i is used to electrically connect to external signal lines (not labeled). The

circuit boards

113h, 113 may be provided with circuits, and the

circuit boards

113h, 113 may be made of a good thermal conductive material (e.g., ceramic, metallic copper) to improve heat dissipation efficiency.

In various embodiments, the

pillars

113e and 113f may be integrally formed on the base 113g, i.e., the

pillars

113e and 113f and the base 113g may be made of the same material, such as a metal with good thermal conductivity. In some embodiments, the

pillars

113e, 113f may be rectangular columns, but are not limited thereto, and in some embodiments, the

pillars

113e, 113f may be cylinders, semi-circular columns, cones, or other three-dimensional shapes.

In various embodiments, the damping unit 113d is disposed between the

pillars

113e and 113f and the sealed housing 113b, and is used for absorbing electromagnetic energy inside the optical transmitting assembly 113 to destroy a high-frequency resonance mode in the optical transmitting assembly 113, thereby improving a resonance phenomenon occurring when transmitting a high-frequency signal, and further improving signal distortion, thereby allowing transmission of a higher-frequency signal, such as a signal for 25Gbps to 50Gbps NRZ, 25Gbps to 100Gbps PAM4, or a higher-frequency signal.

In various embodiments, the damping unit 113d may be one or more units formed of a predetermined damping material in a sheet, a thin film, a thick film, a block, a strip, a powder, or any shape to absorb electromagnetic energy inside the light emitting assembly 113 and reduce a high frequency resonance phenomenon inside the light emitting assembly 113. The resistance of the damping unit 113d may be between 1 ohm (Ω) and 500 ohm, and may be between 5 ohm (Ω) and 100 ohm, for example.

In some embodiments, the damping unit 113d may be, for example, a resistive unit formed of one or more materials to improve a high frequency resonance phenomenon within the light emitting assembly 113. The material of the damping unit 113d may include, for example, pure metal, metal alloy, metal compound, metal oxide, metal mixed material (e.g., a combination of ceramic and metal), semiconductor, or other material.

In some embodiments, the damping unit 113d may include a thin film layer formed of an insulating material (e.g., ceramic) or a composite material, and a metal layer (not shown) formed on both sides of the thin film layer, for example, formed of titanium, platinum, gold, other metals, or any alloy.

In some embodiments, the thickness of the damping unit 113d may be less than 1mm, for example, 0.01mm to 0.4 mm.

In some embodiments, the damping unit 113d may be, for example, formed on the side of the

pillars

113e, 113f closest to the hermetic case 113 b. For example, in one embodiment, the damping unit 113d may be formed on a side surface of the second pillar 113f and adjacent to the hermetic shell 113b to improve a high frequency resonance phenomenon in the light emitting assembly 113. However, the damping unit 113d can be formed at other positions of the

pillars

113e and 113f to improve the high frequency resonance phenomenon in the light emitting element 113. For example, in another embodiment, the damping unit 113d may be formed on the side surface of the first pillar 113e between the pillar 113e and the hermetic case 113b to improve the high frequency resonance phenomenon in the light emitting module 113.

Referring to fig. 28, in various embodiments, each light emitting device 113 may further include a plurality of connecting wires 113j, and the connecting wires 113j may be formed of a conductive metal material and connected between the first support 113e and the second support 113f for improving the high frequency resonance phenomenon in the light emitting device 113.

Referring to fig. 29, in various embodiments, each light emitting element 113 may further include at least one optical lens 113L and an optical window 113 w. The optical lens 113L is disposed in the sealed housing 113b and optically improves, such as focusing, collimating, diverging, etc., the optical signal emitted by the optical transmitter 113a and located in the optical transmitter 113 a. In some embodiments, the optical lens 113L may be disposed on the pillar 113e and aligned with the light emitter 113 a. However, in different embodiments, the optical lens 113L and the light emitter 113a may be disposed on the same circuit board.

As shown in fig. 29, the optical window 113w is disposed on the sealed housing 113b, for example, at the front end of the sealed housing 113b, and is located at the optical lens 113L for allowing the improved optical signal of the optical lens 113L to be transmitted out of the sealed housing 113 b. In some embodiments, the optical window 113w may be a planar transparent plate to allow the improved optical signal of the optical lens 113L to be emitted out of the sealed housing 113 b. However, in different embodiments, the optical window 113w may further perform optical improvement on the optical signal after passing through the optical lens 113L, so as to further improve the optical path after passing through the optical lens 113L.

It should be noted that, since the optical lens 113L can be directly disposed in the sealed housing 113b and aligned with the light emitter 113a, the optical alignment between the optical lens 113L and the light emitter 113a can be controlled more accurately, so as to improve the accuracy of the optical path and further reduce the energy loss of the optical signal. In some embodiments, the material of the optical lens 113L may be different from the material of the optical window 113 w. Specifically, the material of the optical lens 113L may be, for example, various glass materials or new Silicon-based (Silicon-based micro-lens) materials, which are optically transparent media with small absorption rate for specific application wavelength (e.g., 1200 nm-1600 nm).

Referring to fig. 30A, in some embodiments, the light receiving element 114 may include one or more light receiving chips 114c, and the light receiving chips 114c may be strip-shaped chips, for example, and may be connected to the substrate 111. Each of the light receiving chips 114c may have a plurality of light receivers (PD)114p, the plurality of light receivers 114p are arranged along a direction, for example, along a long axis direction of the light receiving chip 114c, and the number of the plurality of optical fibers 131 connected to the light receiving chip 114c is less than the number of the plurality of light receivers 114p of the light receiving chip 114 c.

As shown in fig. 30A, specifically, for example, in one embodiment, for example, 2 light receiving chips 114c may be arranged (e.g., soldered) on the substrate 111. Each of the light receiving chips 114c may have 4 light receivers 114p, for example, and at this time, 2 optical fibers 131 may be connected to 2 of the light receivers 114p on the light receiving chip 114 c. With this configuration, the connection margin between the optical fiber 131 and the optical receiver 114p can be increased, and the connection accuracy between the optical fiber 131 and the optical receiver 114p can be increased, so as to increase the light coupling accuracy between the optical fiber 131 and the optical receiver 114 p. It should be noted that, however, in other embodiments, each of the light receiving chips 114c may be provided with more or less than 4 light receivers 114 p.

Referring to fig. 30B, in some embodiments, the light-receiving element 114 may include a sub-mount 114s, and the sub-mount 114s may be disposed on the substrate 111 for aligning the light-receiving chip 114 c. The alignment base 114s may have one or more alignment marks 114m, and the light-receiving chip 114c may be disposed on the alignment base 114s and aligned by the alignment marks 114m to improve alignment accuracy between the optical fiber 131 and the light-receiving chip 114c, thereby improving and increasing light coupling accuracy between the optical fiber 131 and the light-receiving chip 114 c.

Referring to fig. 31A and 31B, in some embodiments, the optical transceiver module 110 may further include a light receiving fixing member 114h for disposing the light receiving element 114 on the substrate 111, and a gap G (e.g., between 10 μm and 5 cm) may be formed between the light receiving fixing member 114h and the substrate 111 to allow more elements (e.g., ICs and/or passive elements) to be disposed in the gap G, so as to increase an element disposing space on the substrate 111. The light receiving fixing member 114h may include at least one supporting unit 114i, a fixing plane 114j, a positioning groove 114k and a positioning post 114L. The supporting unit 114i is formed at one side of the light receiving fixing member 114h, and is used for supporting the light receiving fixing member 114h on the substrate 111, and forming a gap G between the light receiving fixing member 114h and the substrate 111. The fixing plane 114j is formed on the opposite side of the light receiving fixing member 114h for the light receiving element 114 to be disposed. The positioning groove 114k is formed on the light receiving fixture 114h for positioning the light receiving element 114 and the optical fiber 131 on the light receiving fixture 114 h. In some embodiments, the fixing plane 114j may be formed in the positioning groove 114 k. The positioning post 114L can be formed on the supporting unit 114i for positioning the light receiving fixing member 114h on the substrate 111

As shown in fig. 31A, the light receiving element 114 can be disposed on the fixing plane 114j of the light receiving fixing element 114h and electrically connected to the substrate 111 through the flexible circuit board 117 c. With the light receiving fixing member 114h, a gap G may be formed between the light receiving fixing member 114h and the substrate 111 to increase a device disposing space on the substrate 111. It is noted that in some embodiments, the light receiving fixing member 114h may form more fixing planes 114j to arrange more components.

As shown in fig. 31B, the light receiving fixing member 114h may include, for example, two supporting units 114i to form, for example, an inverted U-shape structure, but is not limited thereto, and in other embodiments, the light receiving fixing member 114h may include one or more supporting units 114i to support the light receiving element 114 on the substrate 111.

The terms "in some embodiments" and "in various embodiments" are used repeatedly. The phrase generally does not refer to the same embodiment; but it may also refer to the same embodiment. The terms "comprising," "having," and "including" are synonymous, unless the context dictates otherwise.

Although examples of various methods, apparatus, and systems have been described herein, the scope of coverage of this disclosure is not limited thereto. On the contrary, this disclosure covers all methods, apparatus, systems, and articles of manufacture fairly falling within the scope of the appended claims either literally or under the doctrine of equivalents. For example, although the examples of systems disclosed above include, among other components, software or firmware executable on hardware, it should be understood that such systems are merely illustrative examples and should be considered as limiting examples. In particular, any or all of the disclosed hardware, software, and/or firmware components may be embodied exclusively in hardware, exclusively in software, exclusively in firmware, or in some combination of hardware, software, and/or firmware.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.

Claims

1. An optical transceiver module, comprising:

a housing;

a substrate disposed within the housing;

a light receiving assembly disposed on the substrate;

and the light emitting assemblies are connected to the substrate, wherein an inclined angle is formed between the light emitting assemblies and the substrate.

2. The optical transceiver module of claim 1, wherein: the light emitting components are respectively positioned on the upper side and the lower side of the substrate and are arranged in a staggered mode.

3. The optical transceiver module of claim 1, wherein: the light emitting components are respectively positioned on the same side of the substrate and are arranged in a staggered mode.

4. The optical transceiver module of claim 1, wherein: the light emitting module further comprises a fixer used for fixing the inclination angle between the light emitting module and the substrate.

5. The optical transceiver module of claim 1, wherein: the light emitting module further comprises a connecting plate, and the light emitting module is connected to the substrate through the connecting plate.

6. The optical transceiver module of claim 5, wherein: the connecting plate includes first connecting plate and second connecting plate.

7. The optical transceiver module of claim 6, wherein: one end of the first connecting plate is connected to the first surface of the substrate, and one end of the second connecting plate is connected to the second surface of the substrate.

8. The optical transceiver module of claim 6, wherein: the first connecting plate and the second connecting plate have different lengths.

9. The optical transceiver module of claim 5, wherein: the substrate comprises at least one convex part and at least one concave part, the concave part is formed on at least one side of the convex part, and the light emitting component is arranged in the concave part of the substrate.

10. A fiber optic cable module, comprising: the method comprises the following steps:

a fiber optic cable;

an optical transceiver module comprising:

a housing;

a substrate disposed within the housing;

a light receiving assembly disposed on the substrate;