CN218350563U - Pluggable assembly connected with optical module - Google Patents

Abstract

The application provides a but plug subassembly of being connected with optical module, one end is equipped with first fiber connector, second fiber connector and third electrical interface respectively, and the other end is equipped with third optical interface and fourth optical interface respectively, but plug subassembly still includes the function chip. Specifically, the third electrical interface is connected with the optical module, and can realize power supply connection to the functional chip; one end of the first optical fiber connector is connected with the optical module, and the other end of the first optical fiber connector is connected with the functional chip through an optical fiber to realize optical connection; one end of the second optical fiber connector is connected with the optical module, and the other end of the second optical fiber connector is connected with the functional chip through an optical fiber to realize optical connection; the third optical interface is connected with an external optical fiber connector; the fourth optical interface is connected with the external optical fiber connector to realize the transmission of optical signals through the external optical fiber. The pluggable module optical module plug connection has flexibility, and the pluggable module can carry the functional chip to be connected with the optical module according to requirements, so that the optical performance of the optical module is improved.

Description

Pluggable component connected with optical module

Technical Field

The application relates to the technical field of optical communication, in particular to a pluggable component connected with an optical module.

Background

The application markets of big data, block chains, cloud computing, the Internet of things, artificial intelligence and the like are rapidly developed, explosive growth is brought to data traffic, and the optical communication technology gradually replaces traditional electric signal communication in various industry fields with the advantages of unique high speed, high bandwidth, low erection cost and the like. In optical communication technology, optical modules play an important role.

The optical performance of the optical module, such as the output optical power, affects the working performance of the optical module, and therefore, the optical performance of the optical module needs to be provided.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a pluggable component connected with an optical module, which is connected with the optical module to improve the optical performance of the optical module.

The application provides a but plug subassembly of being connected with optical module includes:

one end of the pluggable component is respectively provided with a first optical fiber connector, a second optical fiber connector and a third electrical interface, and the other end of the pluggable component is respectively provided with a third optical interface and a fourth optical interface, wherein the pluggable component also comprises a functional chip;

one end of the first optical fiber connector is connected with the optical module, and the other end of the first optical fiber connector is connected with the functional chip through an optical fiber so that an optical signal passes through the functional chip;

one end of the second optical fiber connector is connected with the optical module, and the other end of the second optical fiber connector is connected with the functional chip through an optical fiber so that an optical signal passes through the functional chip;

the third electrical interface is connected with an optical module to supply power to the functional chip;

the third optical interface is connected with an external optical fiber connector;

and the fourth optical interface is connected with an external optical fiber connector.

The application provides but plug subassembly one end of being connected with the optical module is equipped with first fiber connector, second fiber connector and third electrical interface respectively, and the other end is equipped with third optical interface and fourth optical interface respectively, but plug subassembly still includes the function chip. Specifically, the third electrical interface is connected with the optical module, and can realize power supply connection to the functional chip; one end of the first optical fiber connector is connected with the optical module, the other end of the first optical fiber connector is connected with the functional chip through an optical fiber to realize optical connection, so that an optical signal is input to or output from the functional chip, and the functional chip processes the optical signal to improve the optical performance; one end of the second optical fiber connector is connected with the optical module, and the other end of the second optical fiber connector is connected with the functional chip through an optical fiber to realize optical connection so that an optical signal is output from or input to the functional chip; the third optical interface is connected with the external optical fiber connector so that optical signals are transmitted through the external optical fiber; the fourth optical interface is connected with the external optical fiber connector so that the optical signal is transmitted through the external optical fiber. The pluggable module optical module plug connection has flexibility, and the pluggable module can carry the functional chip to be connected with the optical module according to requirements, so that the optical performance of the optical module is improved.

Drawings

In order to more clearly illustrate the technical solutions in the present disclosure, the drawings needed to be used in some embodiments of the present disclosure will be briefly described below, and it is apparent that the drawings in the following description are only drawings of some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art according to the drawings. Furthermore, the drawings in the following description may be considered as schematic diagrams, and do not limit the actual size of products, the actual flow of methods, the actual timing of signals, and the like, involved in the embodiments of the present disclosure.

FIG. 1 is a connection diagram of an optical communication system according to some embodiments;

FIG. 2 is a block diagram of an optical network terminal according to some embodiments;

FIG. 3 is a block diagram of a light module according to some embodiments;

FIG. 4 is an exploded view of a light module according to some embodiments;

FIG. 5 is an exploded view of a light module according to some embodiments;

FIG. 6 is a block diagram of a lower housing, pluggable components, and external fiber optic connectors in an optical module in accordance with some embodiments;

FIG. 7 is a block diagram of a pluggable component in an optical module in accordance with some embodiments;

figure 8 is a cross-sectional view of a pluggable component in an optical module according to some embodiments;

FIG. 9 is a partial block diagram of a pluggable component in an optical module in accordance with some embodiments;

FIG. 10 is a lower housing structure view of an optical module according to some embodiments;

FIG. 11 is a partial block diagram of a lower housing of an optical module according to some embodiments;

FIG. 12 is a cross-sectional view of a lower housing of a light module according to some embodiments;

FIG. 13 is a lower housing structure view of an optical module according to some embodiments;

FIG. 14 is a partial block diagram of a lower housing of an optical module according to some embodiments;

FIG. 15 is a cross-sectional view of a lower housing of a light module according to some embodiments;

FIG. 16 is an exploded view of a lower housing of a light module according to some embodiments;

FIG. 17 is a partially exploded view of a lower housing of a light module according to some embodiments;

fig. 18 is a partial structural view of a lower housing of an optical module according to some embodiments.

Detailed Description

In an optical communication system, an optical signal is used to carry information to be transmitted, and the optical signal carrying the information is transmitted to information processing equipment such as a computer through information transmission equipment such as an optical fiber or an optical waveguide, so as to complete information transmission. Since light has a passive transmission characteristic when transmitted through an optical fiber or an optical waveguide, low-cost and low-loss information transmission can be realized. Further, since a signal transmitted by an information transmission device such as an optical fiber or an optical waveguide is an optical signal and a signal that can be recognized and processed by an information processing device such as a computer is an electrical signal, it is necessary to perform interconversion between the electrical signal and the optical signal in order to establish an information connection between the information transmission device such as an optical fiber or an optical waveguide and the information processing device such as a computer.

The optical module realizes the function of interconversion between the optical signal and the electrical signal in the technical field of optical communication. The optical module comprises an optical port and an electric port, the optical module realizes optical communication with information transmission equipment such as optical fibers or optical waveguides and the like through the optical port, realizes electric connection with an optical network terminal (such as an optical modem) through the electric port, and the electric connection is mainly used for power supply, I2C signal transmission, data information transmission, grounding and the like; the optical network terminal transmits the electric signal to the computer and other information processing equipment through a network cable or a wireless fidelity (Wi-Fi).

Fig. 1 is a connection diagram of an optical communication system. As shown in fig. 1, the optical communication system includes a remote server 1000, a local information processing device 2000, an optical network terminal 100, an optical module 200, an optical fiber 101, and a network cable 103.

One end of the optical fiber 101 is connected to the remote server 1000, and the other end is connected to the optical network terminal 100 through the optical module 200. The optical fiber itself can support long-distance signal transmission, for example, signal transmission of several kilometers (6 kilometers to 8 kilometers), on the basis of which if a repeater is used, theoretically, infinite distance transmission can be realized. Therefore, in a typical optical communication system, the distance between the remote server 1000 and the optical network terminal 100 may be several kilometers, tens of kilometers, or hundreds of kilometers.

One end of the network cable 103 is connected to the local information processing device 2000, and the other end is connected to the optical network terminal 100. The local information processing device 2000 may be any one or several of the following devices: router, switch, computer, cell-phone, panel computer, TV set etc..

The physical distance between the remote server 1000 and the optical network terminal 100 is greater than the physical distance between the local information processing apparatus 2000 and the optical network terminal 100. The connection between the local information processing apparatus 2000 and the remote server 1000 is made by the optical fiber 101 and the network cable 103; and the connection between the optical fiber 101 and the network cable 103 is completed by the optical module 200 and the optical network terminal 100.

The optical module 200 includes an optical port configured to access the optical fiber 101 and an electrical port, so that the optical module 200 establishes a bidirectional optical signal connection with the optical fiber 101; the electrical port is configured to be accessed into the optical network terminal 100, so that the optical module 200 establishes a bidirectional electrical signal connection with the optical network terminal 100. The optical module 200 converts an optical signal and an electrical signal to each other, so that an information connection is established between the optical fiber 101 and the optical network terminal 100. For example, an optical signal from the optical fiber 101 is converted into an electrical signal by the optical module 200 and then input to the optical network terminal 100, and an electrical signal from the optical network terminal 100 is converted into an optical signal by the optical module 200 and input to the optical fiber 101. Since the optical module 200 is a tool for realizing the interconversion between the optical signal and the electrical signal, and does not have a function of processing data, information is not changed in the above-mentioned photoelectric conversion process.

The optical network terminal 100 includes a housing (housing) having a substantially rectangular parallelepiped shape, and an optical module interface 102 and a network cable interface 104 provided on the housing. The optical module interface 102 is configured to access the optical module 200, so that the ont 100 establishes a bidirectional electrical signal connection with the optical module 200; the network cable interface 104 is configured to access the network cable 103, such that the optical network terminal 100 establishes a bidirectional electrical signal connection with the network cable 103. The optical module 200 is connected to the network cable 103 via the optical network terminal 100. For example, the optical network terminal 100 transmits the electrical signal from the optical module 200 to the network cable 103, and transmits the electrical signal from the network cable 103 to the optical module 200, so that the optical network terminal 100 can monitor the operation of the optical module 200 as an upper computer of the optical module 200. The upper computer of the Optical module 200 may include an Optical Line Terminal (OLT) in addition to the Optical network Terminal 100.

The remote server 1000 establishes a bidirectional signal transmission channel with the local information processing device 2000 through the optical fiber 101, the optical module 200, the optical network terminal 100, and the network cable 103.

Fig. 2 is a configuration diagram of the optical network terminal, and fig. 2 only shows a configuration of the optical module 200 of the optical network terminal 100 in order to clearly show a connection relationship between the optical module 200 and the optical network terminal 100. As shown in fig. 2, the optical network terminal 100 further includes a circuit board 105 disposed within the housing, a cage 106 disposed on a surface of the circuit board 105, a heat sink 107 disposed on the cage 106, and an electrical connector disposed inside the cage 106. The electrical connector is configured to access an electrical port of the optical module 200; the heat sink 107 has a projection such as a fin that increases a heat radiation area.

The optical module 200 is inserted into a cage 106 of the optical network terminal 100, the cage 106 holds the optical module 200, and heat generated by the optical module 200 is conducted to the cage 106 and then diffused by a heat sink 107. After the optical module 200 is inserted into the cage 106, the electrical port of the optical module 200 is connected to the electrical connector inside the cage 106, so that the optical module 200 is connected to the optical network terminal 100 by a bidirectional electrical signal. Further, the optical port of the optical module 200 is connected to the optical fiber 101, and the optical module 200 establishes bidirectional optical signal connection with the optical fiber 101.

Fig. 3, 4 are block diagrams of a light module according to some embodiments. As shown in fig. 3 and 4, the optical module 200 includes a housing (shell), a circuit board and an optical transceiver module disposed in the housing.

The shell comprises an upper shell 201 and a lower shell 202, wherein the upper shell 201 is covered on the lower shell 202 to form the shell with two openings; the outer contour of the housing generally appears square.

In some embodiments of the present disclosure, the lower housing 202 includes a bottom plate 2021 and two lower side plates 2022 located at both sides of the bottom plate 2021 and disposed perpendicular to the bottom plate 2021; the upper case 201 includes a cover 2011, and the cover 2011 covers the two lower side plates 2022 of the lower case 202 to form the above case.

In some embodiments, the lower housing 202 includes a bottom plate 2021 and two lower side plates 2022 located at two sides of the bottom plate 2021 and disposed perpendicular to the bottom plate 2021; the upper housing 201 includes a cover 2011 and two upper side plates located on two sides of the cover 2011 and perpendicular to the cover 2011, and the two upper side plates are combined with the two lower side plates 2022 to cover the upper housing 201 on the lower housing 202.

The direction of the connecting line of the two openings 204 and 205 may be the same as the length direction of the optical module 200, or may not be the same as the length direction of the optical module 200. For example, the opening 204 is located at an end portion (right end in fig. 3) of the optical module 200, and the opening 205 is also located at an end portion (left end in fig. 3) of the optical module 200. Alternatively, the opening 204 is located at an end of the optical module 200, and the opening 205 is located at a side of the optical module 200. The opening 204 is an electrical port, and a gold finger of the circuit board extends out of the opening 204 and is inserted into an upper computer (for example, the optical network terminal 100); the opening 205 is an optical port configured to access the external optical fiber 101 so that the external optical fiber 101 is connected to an optical transceiver module inside the optical module 200.

The upper shell 201 and the lower shell 202 are combined in an assembly mode, so that devices such as a circuit board and an optical transceiver module can be conveniently installed in the shells, and the upper shell 201 and the lower shell 202 form encapsulation protection for the devices. In addition, when devices such as a circuit board, an optical transceiver module and the like are assembled, the positioning component, the heat dissipation component and the electromagnetic shielding component of the devices are convenient to deploy, and the automatic production is facilitated.

In some embodiments, the upper housing 201 and the lower housing 202 are generally made of a metal material, which is beneficial to achieve electromagnetic shielding and heat dissipation.

In some embodiments, the optical module 200 further includes an unlocking component located outside its housing, and the unlocking component is configured to implement a fixed connection between the optical module 200 and an upper computer, or to release the fixed connection between the optical module 200 and the upper computer.

Illustratively, the unlocking member is located on the outer wall of the two lower side plates 2022 of the lower housing 202, and has a snap-fit member that matches with a cage of the upper computer (e.g., the cage 106 of the optical network terminal 100). When the optical module 200 is inserted into the cage of the upper computer, the optical module 200 is fixed in the cage of the upper computer by the engaging member of the unlocking member; when the unlocking member is pulled, the engaging member of the unlocking member moves along with the unlocking member, and further the connection relationship between the engaging member and the upper computer is changed, so that the engagement relationship between the optical module 200 and the upper computer is released, and the optical module 200 can be drawn out from the cage of the upper computer.

The circuit board comprises circuit wiring, electronic elements and a chip, and the electronic elements and the chip are connected together through the circuit wiring according to circuit design so as to realize functions of power supply, electric signal transmission, grounding and the like. Examples of the electronic components include capacitors, resistors, transistors, and Metal-Oxide-Semiconductor Field-Effect transistors (MOSFETs). The chip includes, for example, a Micro Controller Unit (MCU), a laser driver chip, a limiting amplifier (limiting amplifier), a Clock and Data Recovery (CDR) chip, a power management chip, and a Digital Signal Processing (DSP) chip.

The circuit board is generally a rigid circuit board, and the rigid circuit board can also realize a bearing effect due to the relatively hard material of the rigid circuit board, for example, the rigid circuit board can stably bear the electronic element and the chip; when the optical transceiver component is positioned on the circuit board, the rigid circuit board can also provide smooth bearing; the rigid circuit board can also be inserted into an electric connector in the cage of the upper computer.

The circuit board further comprises a gold finger formed on an end surface thereof, and the gold finger is composed of a plurality of pins independent of each other. The circuit board is inserted into the cage 106 and electrically connected to the electrical connector in the cage 106 by gold fingers. The gold fingers may be disposed on only one side of the circuit board (e.g., the upper surface shown in fig. 4), or may be disposed on both upper and lower sides of the circuit board, so as to adapt to the situation with a large demand for the number of pins. The golden finger is configured to establish an electrical connection with the upper computer to realize power supply, grounding, I2C signal transmission, data signal transmission and the like.

Of course, a flexible circuit board is also used in some optical modules. Flexible circuit boards are commonly used in conjunction with rigid circuit boards to supplement the rigid circuit boards. For example, a flexible circuit board may be used to connect the rigid circuit board and the optical transceiver module.

The optical transceiving component comprises an optical transmitting device and an optical receiving device, wherein the optical transmitting device is configured to transmit optical signals, and the optical receiving device is configured to receive the optical signals. Illustratively, the light emitting device and the light receiving device are combined together to form an integrated light transceiving component.

For an optical module, the optical performance is more medium, for example, for a silicon optical coherent optical module, a short-distance coherent digital switching product is realized, and a longer-distance flexible Dense Wavelength Division Multiplexing (DWDM) is always an important requirement; the silicon light coherent optical module has insufficient output light power, thereby limiting the application thereof. The EDFA has high optical signal-to-noise ratio and the traditional transmission network concentrated light amplification technology, so that people can project the sunlight to the mini or even nano EDFA again. In DWDM, the optical wavelength of each channel signal should be controlled to avoid adjacent channel propagation, one of which is to use optical filters. How to flexibly select the functional devices according to needs and flexibly arrange the functional devices on an optical module is a technical problem to be solved.

As shown in fig. 4, a first optical interface 210, a second optical interface 220, and a second electrical interface 230 are disposed at one end of a package cavity formed by the upper housing 201 and the lower housing 202 of the optical module; the second electrical interface 230 is different from an electrical interface originally provided by the standard optical module (that is, the content opening 204 is an electrical interface), and for convenience of distinction, the electrical interface originally provided by the standard optical module is referred to as a first electrical interface in the embodiment of the present application. That is, one end of the package cavity formed by the upper shell 201 and the lower shell 202 is provided with a first electrical interface, and the other end is respectively provided with a first optical interface 210, a second optical interface 220 and a second electrical interface 230; in particular, as shown in fig. 4, the second electrical interface 230 is located between the first optical interface 210 and the second optical interface 220, and as can be seen more clearly in fig. 11, the second electrical interface 230 is located between the first optical interface 210 and the second optical interface 220.

As shown in fig. 3 to fig. 6, the pluggable module 300 is pluggable to the optical module, specifically, to the first optical interface 210, the second optical interface 220, and the second electrical interface 230 of the optical module, so as to implement a pluggable flexible connection between the pluggable module 300 and the standard optical module (i.e., an integral structure formed by the standard optical module, i.e., the upper housing 201, the lower housing 202, and the internal devices). In the embodiment of the present application, the pluggable module 300 includes a functional chip 350, and the functional chip 350 may include an EDFA (erbium doped fiber amplifier), a filter, an optical power detector, and the like. Through the plug-in connection of the pluggable component 300, different types of functional chips can be flexibly carried according to requirements.

In the embodiment of the present application, the pluggable module 300 can carry the corresponding functional chip 350 according to the requirement, and the pluggable module 300 is hung on the optical module by carrying the functional chip 350, so as to provide the optical performance of the optical module; meanwhile, the pluggable module 300 has independence at both ends, and can be flexibly connected between the optical module and the external optical fiber as required.

Fig. 7 is a schematic diagram of an overall structure of the pluggable module 300, as shown in fig. 7, one end of the pluggable module 300 forms a first optical fiber connector 310, a second optical fiber connector 320, and a third electrical interface 330, and the other end forms a third optical interface 361 and a fourth optical interface 362; the pluggable component 300 also includes a functional chip 350. As shown in fig. 9, the third electrical interface 330 is disposed between the first fiber optic connector 310 and the second fiber optic connector 320.

The first optical fiber connector 310 of the pluggable component 300 is connected with the first optical interface 210 of the optical module in a plug-in manner, the second optical fiber connector 320 of the pluggable component 300 is connected with the second optical interface 220 of the optical module in a plug-in manner, and the third electrical interface 330 of the pluggable component 300 is connected with the second electrical interface 230 of the optical module in a plug-in manner, so that one end of the pluggable component 300 is connected with the optical module, including optical connection and electrical connection.

The third optical interface 361 of the pluggable module 300 is connected to the first external optical fiber connector 410 in a pluggable manner, and the fourth optical interface 362 of the pluggable module 300 is connected to the second external optical fiber connector 420 in a pluggable manner, so that the other end of the pluggable module 300 is connected to an external optical fiber.

The third electrical interface 330 is plug-connected to the second electrical interface 230 to supply power to the functional chip 350.

The pluggable module 300 in the embodiment of the present application can be independently disposed between the optical module and the external optical fiber.

Specifically, the first optical fiber connector 310 is structurally matched with the first optical interface 210 to realize a mating connection; the second optical fiber connector 320 is structurally matched with the second optical interface 220 to realize matching connection; the third optical interface 361 is structurally matched with the first external optical fiber connector 410 to realize matching connection; the fourth optical interface 362 is structurally mated with the second external fiber optic connector 420 to achieve a mating connection. Further, the structures of the first optical interface 210, the second optical interface 220, the third optical interface 361, and the fourth optical interface 362 may be set to be the same.

In the pluggable component 300 of the embodiment of the application, the first optical fiber connector 310 is connected to the first optical interface 210, and the third optical interface 361 is connected to the first external optical fiber connector 410 to implement optical connection, so as to input or output optical signals to the functional chip 350; the second optical fiber connector 320 is connected to the second optical interface 220, and the fourth optical interface 362 is connected to the second external optical fiber connector 420, so as to implement optical connection, and further output or input optical signals to the functional chip 350; (ii) a The third electrical interface 330 is connected to the second electrical interface 230 to provide a power supply connection for supplying power to the functional chip 350.

In the embodiment of the present application, the pluggable component 300 is respectively connected to the first optical interface 210, the second optical interface 220, and the second electrical interface 230 in a pluggable manner through the first optical fiber connector 310, the second optical fiber connector 320, and the third electrical interface 330, which are arranged at one end, so as to realize the pluggable connection between the end and the optical module, that is, to realize the relative independence of the end; the optical performance of the optical module is adaptively provided by connecting the third optical interface 361 and the fourth optical interface 362 with the first external optical fiber connector 410 and the second external optical fiber connector 420 through the other end, so as to realize the plug-in connection between the end and the external optical fiber connector, that is, the relative independence of the end, and further the overall independence of the pluggable component 300, wherein the plug-in connection of the pluggable component 300 has flexibility, whether the connection is performed or not can be selected according to the needs, and the type of the functional chip 350 can also be selected according to the needs; if the pluggable module 300 is not connected, the first external optical fiber connector 410 may be directly connected to the first optical interface 210, and the second external optical fiber connector 420 may be directly connected to the second optical interface 220, so that the pluggable module 300 in the embodiment of the present disclosure has flexibility and applicability.

Specifically, in the pluggable module 300, one end of the first optical fiber connector 310 is connected to the first optical interface 210, and the other end is connected to the functional chip 350 through the first optical fiber 371, so that the optical signal passes through the functional chip 350, and the optical signal takes the emitted optical signal generated by the optical transmitter as an example, that is, the emitted optical signal is transmitted to the functional chip 350, and the functional chip 350 performs certain processing on the received emitted optical signal, and then is connected to the first external optical fiber connector 410 through the third optical interface 361, so that the processed emitted optical signal is emitted through the external optical fiber connected to the first external optical fiber connector 410. In this process, the optical signal is transmitted through the first optical interface 210, the first optical fiber connector 310, the first optical fiber 371, the functional chip 350, the third optical interface 361 and the first external optical fiber connector 410 in sequence, and then transmitted through the external optical fiber connected to the first external optical fiber connector 410, so as to realize optical connection.

One end of the second optical fiber connector 320 is connected to the second optical interface 220, and the other end is connected to the functional chip 350 through the second optical fiber 372, so that the optical signal passes through the functional chip 350, the fourth optical interface 362 is connected to the second external optical fiber connector 420, so that the optical signal is transmitted to the functional chip 350, at this time, the optical signal takes an external optical signal as an example, that is, the external optical signal is transmitted to the second external optical fiber connector 420 through the external optical fiber, the second external optical fiber connector 420 is connected to the fourth optical interface 362, so that the external optical signal is transmitted to the pluggable component 300, and specifically transmitted to the functional chip 350 of the pluggable component 300, the functional chip 350 performs certain processing on the received external optical signal, and the processed optical signal is transmitted to the inside of the package cavity formed by the upper shell 201 and the lower shell 202 through the second optical fiber 372, the second optical fiber connector 320, and the second optical interface 220 in sequence. In this process, the external optical signal is sequentially transmitted to the inside of the package cavity formed by the upper housing 201 and the lower housing 202 through the external optical fiber, the second external optical fiber connector 420, the fourth optical interface 362, the functional chip 350, the second optical fiber 372, the second optical fiber connector 320, and the second optical interface 220, so as to implement optical connection.

The third electrical interface 330 is connected to the second electrical interface 230, the second electrical interface 230 may be directly electrically connected to the power supply golden finger at one end of the circuit board through a wire, or may be electrically connected to the power supply trace on the circuit board through a wire, and then the power supply trace is electrically connected to the power supply golden finger at one end of the circuit board, and the power supply golden finger is electrically connected to the upper computer to obtain power supply, so as to supply power to the functional chip 350, thereby achieving power supply connection.

As shown in fig. 7 and 8, in the embodiment of the present application, the first optical fiber connector 310 is connected to the functional chip 350 through the first optical fiber 371, and optical connection is implemented; the second optical fiber connector 320 is connected with the functional chip 350 through a second optical fiber 372 to realize optical connection; the third electrical interface 330 is connected to the functional chip 350 via a second wire set 380 to provide a power supply connection. As shown in fig. 8, the second wire group 380 includes wires, and the wires are stacked one on another and aligned in a vertical direction.

The pluggable module 300 further includes a connection component 340, one end of the connection component 340 is connected to the first optical fiber 371, the second optical fiber 372 and the second wire group 380, and the other end is connected to the functional chip 350; the connecting member 340 is made of a soft material, such as a silicone material, and has a certain flexibility, so as to achieve soft contact with the first optical fiber 371, the second optical fiber 372, and the second wire group 380, thereby protecting the first optical fiber 371, the second optical fiber 372, and the second wire group 380.

As shown in fig. 8, the inside of the connecting member 340 is respectively provided with a first through hole 341, a second through hole 342 and a third through hole 343, the first through hole 341 is used for avoiding the first optical fiber 371, so that the first optical fiber 371 is connected to the functional chip 350 to realize optical connection; the second through hole 342 is used for avoiding the second optical fiber 372, so that the second optical fiber 372 is connected to the functional chip 350 to realize optical connection; the third through hole 343 is configured to avoid the second wire group 380, so that the second wire group 380 is connected to the functional chip 350 to implement power supply connection.

As shown in fig. 10, the end portion of the lower housing 202 is provided with a first fiber optic adapter 240, a second fiber optic adapter 250, and a first wire group 260 in addition to the first optical interface 210, the second optical interface 220, and the second electrical interface 230. As shown in fig. 14, the first lead group 260 includes leads, which are stacked one on another and aligned in a vertical direction. Specifically, the first fiber adapter 240 extends into the first optical interface 210, that is, one end of the first optical interface 210 is connected to the first fiber adapter 240, and the other end is connected to the first fiber connector 310, so that the first fiber adapter 240 and the first fiber connector 310 are connected at the first optical interface 210; the second fiber adapter 250 extends into the second optical interface 220, that is, one end of the second optical interface 220 is connected to the second fiber adapter 250, and the other end is connected to the second fiber connector 320, so that the second fiber adapter 250 and the second fiber connector 320 are connected at the second optical interface 220; the first wire set 260 extends into the second electrical interface 230, that is, one end of the second electrical interface 230 is connected to the first wire set 260, and the other end is connected to the third electrical interface 330.

The first wire group 260 is connected with the second electrical interface 230, the second wire group 380 is connected with the third electrical interface 330, and the first wire group 260 is connected with the second wire group 380 through the connection of the second electrical interface 230 and the third electrical interface 330, so that the first wire group 260 is powered, and further the power supply to the functional chip 350 is realized. The first wire set 260 may be powered by: the first wire group 260 obtains power supply from the upper computer through the power supply golden finger.

As shown in fig. 11-14, the second electrical interface 230 is disposed between the first optical interface 210 and the second optical interface 220, and the first wire set 260 is disposed between the first fiber optic adapter 240 and the second fiber optic adapter 250; the first fiber optic adapter 240 extends into one end of the first optical interface 210, the second fiber optic adapter 250 extends into one end of the second optical interface 220, and the first wire set 260 extends into one end of the second electrical interface 230. The first wire set 260 is also shown in fig. 15 as extending into one end of the second electrical interface 230.

As shown in fig. 16-18, the first fiber optic adapter 240 includes a first limit projection 241, a first connecting body 242, and a second connecting body 243, and the second fiber optic adapter 250 includes a second limit projection 251, a third connecting body 252, and a fourth connecting body 253; in order to fix the first fiber optic adapter 240 to the surface of the lower housing 202, the surface of the lower housing 202 is provided with a first positioning groove 271 and a first clamping groove 272, the first limiting protrusion 241 is disposed in the first positioning groove 271, the first connecting body 242 is disposed in the first optical interface 210, and the second connecting body 243 is disposed in the first clamping groove 272, so as to fix the first fiber optic adapter 240 to the surface of the lower housing 202; in order to fix the second fiber optic adapter 250 to the surface of the lower housing 202, the surface of the lower housing 202 is provided with a second positioning groove 281 and a second card slot 282, a second limiting protrusion 251 is disposed in the second positioning groove 281, a third connecting body 252 is disposed in the second optical interface 220, and a fourth connecting body 253 is disposed in the second card slot 282, so as to fix the second fiber optic adapter 250 to the surface of the lower housing 202.

As shown in fig. 18, a base 291 is disposed between the first optical interface 210 and the second optical interface 220, the base 291 penetrates through the inside to form the second electrical interface 230, an insertion groove 294 is disposed at one end of the base 291, and the insertion groove 294 is used for inserting the first lead group 260; a limiting member 292 is spanned on the surface of the embedding groove 294, the limiting member 292 is used for fixing the first wire group 260, so that the first wire group 260 passes through the limiting member 292 more stably, an avoiding hole 293 is arranged in the middle of the limiting member 292 in a penetrating manner, the avoiding hole 293 is used for avoiding the first wire group 260, and the first wire group 260 extends into the second electrical interface 230 from the avoiding hole 293; the limiting member 292 and the avoiding hole 293 are combined together to form a structure similar to a door, which can limit the first wire set 260 and enable the first wire set 260 to pass through transversely.

In some embodiments, the functional chip 350 may be an EDFA, and the optical signal generated by the optical transmitter is amplified by the EDFA to increase the output optical power; meanwhile, the received external optical signal can be amplified to improve the receiving sensitivity.

The erbium-doped optical amplifier is a special optical fiber, and rare earth element erbium (Er) is injected into a fiber core, so that an optical signal with a certain wavelength can be directly amplified under the action of a pump laser. EDFAs enable long-distance, large-capacity, high-speed fiber communication and are important devices of DWDM systems. The EDFA mainly comprises erbium-doped fiber (EDF), a pump laser, an optical coupler, an optical isolator, an optical filter and the like. The erbium-doped fiber is an erbium-doped quartz fiber with the length of 10m-100 m; the pump laser is a semiconductor laser, the working wavelength is 0.98 mu m, and the pump laser emits pump light; the optical coupler can be a passive optical device for mixing an input optical signal and an optical wave output by the pump laser, and a Wavelength Division Multiplexer (WDM) is generally adopted; the optical isolator can prevent reflected light from influencing the working stability of the optical amplifier, and ensures that optical signals can only be transmitted in the forward direction without being influenced by backward scattered light. The optical filter can filter the noise of the optical amplifier, reduce the influence of the noise on the system and improve the signal-to-noise ratio of the system. The main principle of the EDFA for amplifying the optical signal is as follows: the erbium-doped fiber forms population inversion distribution under the excitation of pump light, and then generates stimulated radiation under the action of an emitted light signal, and the energy released by the stimulated radiation is loaded on photons of the emitted light signal, so that the amplification of the emitted light signal is realized.

In some embodiments, the functional chip 350 may include an EDFA and an optical power detector, and the optical power detector amplifies and outputs an optical emission signal generated by the optical emission device through the EDFA to increase output optical power; in order to monitor the output light supply, a part of the emitted light signal amplified by the EDFA may be used as a monitoring emitted light signal, the monitoring emitted light signal is used to monitor the output light power, and then the monitoring emitted light signal is converted into a monitoring photocurrent signal by the optical power detector, and the monitoring photocurrent signal is output from the functional chip 350 to the circuit board.

In some embodiments, the functional chip 350 may include an EDFA and a filter, and the optical emission signal generated by the optical emission device is amplified and output by the EDFA to increase the output optical power; the optical signals with specific wavelengths are screened by the filter, and only the optical signals with specific wavelengths are allowed to pass, so that other wavelengths are prevented from entering the channel, and further, crosstalk of other channels to the optical signals of the channel is avoided.

In some embodiments, the functional chip 350 may encapsulate an EDFA and a variable optical attenuator, and amplify and output the emitted optical signal generated by the optical emission device through the EDFA to increase output optical power; the variable optical attenuator may attenuate an optical power of the optical signal. In general DWDM, a variable optical attenuator may be disposed in front of an EDFA, and the variable optical attenuator may detect a change of optical power input to the EDFA, and accordingly change the magnitude of the optical power input to the EDFA according to a preset adjustment parameter, while the EDFA keeps the output optical power constant.

It is understood that the functional chip 350 may also be provided with other functional devices to improve the optical performance of the optical module.

As in some of the foregoing embodiments, the functional chip 350 may include an EDFA and an optical power detector, and the optical power detector amplifies and outputs the optical emission signal generated by the optical emission device through the EDFA to increase the output optical power; in order to monitor the output optical power, a part of the optical signal amplified by the EDFA may be used as a monitoring optical signal, which is used to monitor the output optical power, and then converted into a monitoring photocurrent signal by the optical power detector, and the monitoring photocurrent signal is output from the functional chip 350 to the circuit board. The EDFA comprises a pump laser, and can directly amplify optical signals with certain wavelength under the action of the pump laser; and bias current is required to be provided for the pump laser to ensure the normal work of the pump laser. Then, as shown in fig. 14, the first wire group 260 includes stacked wires 261, 262 and 263, and correspondingly, the second wire group 380 also includes stacked wires, the corresponding wires are electrically connected through the connection of the second electrical interface 230 and the third electrical interface 330, and the electrically connected wires are the first wire, the second wire and the third wire, respectively; the first wire is a power supply transmission line, and one end of the first wire is electrically connected with the anode of a pump laser in the EDFA so as to supply power to the EDFA through the first wire; the third wire is a light power detection signal transmission line, one end of the third wire is electrically connected with the circuit board, the other end of the third wire is electrically connected with the cathode of the light power detector, a monitoring light current signal generated by the light power detector is transmitted to the circuit board through the third wire, the circuit board outputs the monitoring light current signal to an upper computer through a gold finger, and the upper computer monitors the output light power according to the monitoring light current signal; the second wire is a grounding wire and is electrically connected with GND on the circuit board, so that the EDFA and the optical power detector are grounded. Furthermore, the pump laser and the optical power detector share a grounding lead, the cathode of the pump laser is electrically connected with the grounding lead, and the anode of the optical power detector is electrically connected with the grounding lead.

It is understood that the first and second wire sets 260 and 380 may define more wires to achieve input and output of certain parameters.

In summary, the pluggable module 300 provided in the present application is plugged onto an optical module through the carrier function chip 350, so as to provide the optical performance of the optical module. Specifically, one end of the pluggable component 300 is provided with a first optical fiber connector 310, a second optical fiber connector 320 and a third electrical interface 330, and the other end is provided with a third optical interface 361 and a fourth optical interface 362, the first optical fiber connector 310 is connected with the first optical interface 210, and the third optical interface 361 is connected with the first external optical fiber connector 410 to realize optical connection, so as to input or output optical signals to the functional chip 350; the second optical fiber connector 320 is connected to the second optical interface 220, and the fourth optical interface 362 is connected to the second external optical fiber connector 420, so as to implement optical connection, and further output or input optical signals to the functional chip 350; the third electrical interface 330 is connected to the second electrical interface 230 to provide a power supply connection for supplying power to the functional chip 350.

The pluggable component 300 can carry a corresponding functional chip 350 to be hung on an optical module according to requirements, and further provides optical performance of the optical module; meanwhile, the pluggable module 300 has independence at both ends, and can be flexibly connected between the optical module and the external optical fiber as required.

The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art will appreciate that changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims (8)

1. A pluggable module for connection with an optical module,

one end of the pluggable component is respectively provided with a first optical fiber connector, a second optical fiber connector and a third electrical interface, and the other end of the pluggable component is respectively provided with a third optical interface and a fourth optical interface, wherein the pluggable component also comprises a functional chip;

one end of the first optical fiber connector is connected with the optical module, and the other end of the first optical fiber connector is connected with the functional chip through an optical fiber so that an optical signal can pass through the functional chip;

one end of the second optical fiber connector is connected with the optical module, and the other end of the second optical fiber connector is connected with the functional chip through an optical fiber so that an optical signal passes through the functional chip;

the third electrical interface is connected with an optical module to supply power to the functional chip;

the third optical interface is connected with an external optical fiber connector;

and the fourth optical interface is connected with an external optical fiber connector.

2. The pluggable module of claim 1, wherein the third electrical interface is disposed between the first fiber optic connector and the second fiber optic connector.

3. The pluggable module of claim 1, wherein the first optical fiber connector is connected to the functional chip via a first optical fiber;

the second optical fiber connector is connected with the functional chip through a second optical fiber.

4. The pluggable module of claim 3, further comprising a connection component disposed between the first optical connector and the third optical interface;

the third electrical interface is externally connected with a second wire group;

a first through hole, a second through hole and a third through hole are respectively arranged in the connecting part in a penetrating manner;

the first through hole is used for avoiding the first optical fiber so as to enable the first optical fiber to extend to the third optical interface;

the second through hole is used for avoiding the second optical fiber so as to enable the second optical fiber to extend to the fourth optical interface;

the third through hole is used for avoiding the second lead group and extending the second lead group to the functional chip.

5. The pluggable component of claim 1, wherein the first optical fiber connector has one end connected to the optical interface of the optical module;

one end of the second optical fiber connector is connected with the optical interface of the optical module;

and the third electrical interface is connected with the electrical interface of the optical module.

6. The pluggable component of claim 1, wherein the third optical interface is connected to an external optical fiber via the external optical fiber connector;

the fourth optical interface is connected with an external optical fiber through the external optical fiber connector.

7. The pluggable module of claim 1, wherein the first fiber optic connector is pluggable with the optical module;

the second optical fiber connector is connected with the optical module in a plug-in manner;

the third electrical interface is connected with the optical module in a plug-in manner.

8. The pluggable module of claim 1, wherein the functional chip comprises an erbium doped optical amplifier and an optical power detector.

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