WO2019205800A1

WO2019205800A1 - Tunable laser assembly

Info

Publication number: WO2019205800A1
Application number: PCT/CN2019/076296
Authority: WO
Inventors: 舒坦; 易焕中
Original assignee: 华为技术有限公司
Priority date: 2018-04-23
Filing date: 2019-02-27
Publication date: 2019-10-31
Also published as: CN110391846B; CN110391846A

Abstract

The present application relates to a tunable laser assembly, which falls within the technical field of electronics. The tunable laser assembly comprises a first substrate, a second substrate, a connection component, a first laser, a second laser, an external interface, a controller, an analog-digital converter, a digital-analog converter, a drive circuit, a conversion circuit and a power supply conversion circuit, wherein the first substrate is electrically connected to the second substrate via the connection component, and the second substrate is mounted above the first substrate; and some of the first laser, the second laser, the external interface, the controller, the analog-digital converter, the digital-analog converter, the drive circuit, the conversion circuit and the power supply conversion circuit are mounted on the electrical connection of the first substrate, and the others are mounted on the electrical connection of the second substrate. By means of the present application, a substrate is divided into a first substrate and a second substrate, and the first substrate is connected to the second substrate via a connection component to form a module with an upper-lower structure, so that the mounting space is saved on.

Description

Tunable laser component

The present application claims priority to Chinese Patent Application No. 201101369, 234, filed on Apr. 23, 2008, the entire disclosure of which is hereby incorporated by reference.

Technical field

This application relates to the field of electronic technology, and more particularly to a tunable laser assembly.

Background technique

A laser in an ITLA (Integrated Tunable Laser Assembly) is used to emit laser light, which can be used in the field of communication. Generally, ITLA is not used alone, but the ITLA is connected to the host through a preset interface for use. Therefore, when designing the host, it will refer to the OIF (Optical Internet Forum) protocol to leave a certain space for the ITLA on the host to install the ITLA.

The size of the ITLA specified in the OIF protocol is 20 mm in width and 45 mm in length.

The ITLA specified in the OIF protocol contains only one laser, and one laser can only emit one laser at the same time. The finished host (ie, the coherent optical module) needs to emit two lasers at the same time. Therefore, two ITLAs can be set up in the finished host. However, since two ITLAs are set in the finished host, it is necessary to expand the size of the finished host, and it is difficult to meet the evolving needs of the miniaturization of the finished host.

In the process of implementing the present application, the inventors found that at least the following problems exist:

If you do not expand the size of the finished host, you can set up two lasers in one ITLA to fire two lasers at the same time. However, there are many devices that need to be laid out in an ITLA, and the layout space required is large. The size (width and length) of the ITLA provided with two lasers in the prior art is generally larger than the size specified in the OIF protocol, and the oversized ITLA is difficult to install on the finished host.

Summary of the invention

In order to overcome the problems in the related art, the present application provides the following technical solutions:

According to a first aspect of embodiments of the present application, a tunable laser component is provided, the tunable laser component comprising: a first substrate, a second substrate, a connecting component, a first laser, a second laser, an external interface, and a controller , an analog to digital converter, a digital to analog converter, a drive circuit, a conversion circuit, and a power conversion circuit, wherein:

The first substrate is electrically connected to the second substrate through the connecting member, and the second substrate is mounted above the first substrate;

The first laser, the second laser, the external interface, the controller, the analog to digital converter, the digital to analog converter, the driving circuit, the conversion circuit, and the power conversion Some of the components in the circuit are mounted on the first substrate, and other components are mounted on the second substrate.

The substrate is divided into a first substrate and a second substrate, and the first substrate and the second substrate are connected by a connecting member to a module having an upper and lower structure, thereby saving installation space. Furthermore, even if there are many devices in the tunable laser component and the required layout space is large, the size of the tunable laser component provided by the present application can be limited to the range specified by the protocol. Thus, the tunable laser assembly provided by the present application is easier to install on a finished host.

In one possible implementation, the tunable laser assembly further includes a housing, the first substrate and the second substrate being mounted inside the housing.

In one possible implementation, the housing includes an upper cover and a base.

In a possible implementation manner, the interior of the base further includes a fixed pillar, the first substrate is mounted on a bottom surface in the base, and the second substrate is mounted on the fixed pillar.

In a possible implementation manner, the upper cover and the base are provided with a plurality of screw holes corresponding to the positions.

In a possible implementation manner, a nut slot is disposed on a bottom surface of the base corresponding to each screw hole, and a nut slot is disposed on a top surface of the upper cover corresponding to each screw hole. .

In practice, the size of the nut slot can be the same as the size of the screw cap of the screw to be mounted, so that when the screw is installed through the nut slot, the nut can just fill the nut slot, in the upper cover or the base Form a flat plane on the top.

In a possible implementation, the connecting member is a wire, a pin or a flexible plate.

The flexible sheet has better stretchability and is easier to use in a small space.

In a possible implementation manner, the external interface is a public interface.

In a possible implementation manner, the external interface includes fourteen pins, wherein:

The first pin, the third pin and the fourteenth pin are first preset working voltage pins;

The fifth pin, the seventh pin, and the thirteenth pin are ground pins;

The ninth pin and the eleventh pin are second preset working voltage pins;

The second pin is a first control signal input pin;

The fourth pin is a second control signal input pin;

The sixth pin is the first reset pin;

The eighth pin is a data transmitting pin, and the tenth pin is a data receiving pin;

The twelfth pin is the second reset pin.

Different from the protocol, in the embodiment of the present application, the thirteenth pin is changed to the ground pin, and the fourteenth pin is changed to the first preset working voltage pin. In the protocol, the thirteenth pin is originally a third preset voltage pin. In the embodiment of the present application, the third preset voltage can be converted by using the first preset voltage and the second preset voltage, so there is no need to provide . In the agreement, the fourteenth pin is generally not used, so it is changed to the first preset working voltage pin. Since the operating voltages of the first laser and the second laser are from a first preset operating voltage, and when the first laser and the second laser emit laser light, the required electric energy is large, so the current is large, and one of the pins can flow. The current is limited, so that a plurality of pins can be provided to provide the current required by the first laser and the second laser, so that the first laser and the second laser can work stably.

In a possible implementation manner, the external interface is configured to receive a control instruction sent by a host, where the control instruction includes indication information, where the indication information is used to indicate that the control object of the control instruction is the a first laser or the second laser.

The technical solutions provided by the embodiments of the present application may include the following beneficial effects:

The tunable laser component provided by the present application includes a first substrate, a second substrate, a connecting component, a first laser, a second laser, an external interface, a controller, an analog-to-digital converter, a digital-to-analog converter, a driving circuit, and a conversion circuit And power conversion circuit. Wherein: the first substrate is electrically connected to the second substrate through the connecting component, and the second substrate is mounted above the first substrate; the first laser, the second laser, the external interface, the controller, the analog-to-digital converter, the digital-to-analog converter, Some components of the driving circuit, the conversion circuit, and the power conversion circuit are mounted on the first substrate electrical connection, and the other components are mounted on the second substrate electrical connection. In this way, the substrate is divided into the first substrate and the second substrate, and the first substrate and the second substrate are connected to the module having the upper and lower structures by the connecting member, thereby saving the installation space. Furthermore, even if there are many devices in the tunable laser component and the required layout space is large, the size of the tunable laser component provided by the present application can be limited to the range specified by the protocol. Thus, the tunable laser assembly provided by the present application is easier to install on a finished host.

The above general description and the following detailed description are intended to be illustrative and not restrictive.

DRAWINGS

The drawings herein are incorporated in and constitute a part of the specification, In the drawing:

1 is a schematic structural diagram of a tunable laser assembly according to an exemplary embodiment;

2 is a schematic structural diagram of a tunable laser assembly according to an exemplary embodiment;

FIG. 3-a is a schematic structural diagram of a tunable laser assembly according to an exemplary embodiment; FIG.

FIG. 3-b is a schematic structural diagram of a tunable laser assembly according to an exemplary embodiment.

illustration

111 first substrate; 112 second substrate;

113 connecting member; 114 first laser;

115 second laser; 116 external interface;

211 upper cover; 212 base;

311 fixed pillar; 411 screw hole

The embodiments of the present application have been illustrated by the above-described figures, which will be described in more detail hereinafter. The drawings and the written description are not intended to limit the scope of the present invention in any way, and the concept of the present application will be described by those skilled in the art by referring to the specific embodiments.

detailed description

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. The following description refers to the same or similar elements in the different figures unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with aspects of the present application as detailed in the appended claims.

An exemplary embodiment of the present application provides a tunable laser assembly that can include a first substrate 111, a second substrate 112, a connection member 113, a first laser 114, a second laser 115, and an external interface 116. The controller 117, the analog to digital converter 118, the digital to analog converter 119, the drive circuit 120, the conversion circuit 121, and the power conversion circuit 122.

The first substrate 111 is electrically connected to the second substrate 112 through the connecting member 113, and the second substrate 112 is mounted above the first substrate 111; the first laser 114, the second laser 115, the external interface 116, the controller 117, and the analog-to-digital conversion A part of the device 118, the digital-to-analog converter 119, the driving circuit 120, the conversion circuit 121, and the power conversion circuit 122 are mounted on the first substrate 111, and other components are mounted on the second substrate 112.

In an implementation, the first substrate 111 may be electrically connected through the connection member 113 and the second substrate 112. The first substrate 111 and the second substrate 112 may be mainly provided with a part of the controller 117, the analog-to-digital converter 118, the digital-to-analog converter 119, the driving circuit 120, the conversion circuit 121, and the power conversion circuit 122. It is possible to determine which devices are disposed on the first substrate 111 and which devices are disposed on the second substrate 112 in accordance with the size and wiring requirements of the above devices. The controller 117, the analog-to-digital converter 118, the digital-to-analog converter 119, and the power conversion circuit 122 may be disposed on the first substrate 111, and some of the components of the driving circuit 120 and the conversion circuit 121 may be disposed on the second substrate. On the 112, other devices are disposed on the first substrate 111.

The device on the first substrate 111 may be electrically connected through the connection member 113 and the device on the second substrate 112. As shown in FIG. 1, the second substrate 112 can be mounted above the first substrate 111, so that the space on the horizontal surface can be saved. Furthermore, the size of the tunable laser component provided by the embodiment of the present application can be made to meet the protocol.

Some components of the first laser 114, the second laser 115, the external interface 116, the controller 117, the analog-to-digital converter 118, the digital-to-analog converter 119, the driving circuit 120, the conversion circuit 121, and the power conversion circuit 122 may be installed in the first On a substrate 111, other parts of the device may be mounted on the second substrate 112.

The connection relationship between the first laser 114, the second laser 115, the external interface 116, the controller 117, the analog-to-digital converter 118, the digital-to-analog converter 119, the drive circuit 120, the conversion circuit 121, and the power conversion circuit 122 can be seen in FIG. The controller 117 can be electrically connected to the digital-to-analog converter 119, and the digital-to-analog converter 119 can convert the digital signal output from the controller 117 into an analog signal, such that when the driving circuit 120 connected to the digital-to-analog converter 119 receives the controller When the signal is sent 117, the signal can be correctly identified. For the digital to analog converter 119, there may be multiple outputs, and the multiple outputs may be electrically connected to the drive circuit 120 at the same time. The driving circuit 120 is electrically connected to the first laser 114, and the driving circuit 120 can drive the first laser 114 and the second laser 115 to emit laser light. Depending on the signal output by the controller 117, the first laser 114 and the second laser 115 can be controlled to emit laser light having different powers having different wavelengths. The first laser 114 and the second laser 115 can provide a dual light source, wherein one light source can be used as the originating light source, and the other light source can be used as the local oscillator light source.

The controller 117 and the analog-to-digital converter 118 and the digital-to-analog converter 119 can be electrically connected through an SPI (Serial Peripheral Interface) or an I ² C (a bidirectional two-wire synchronous serial bus) bus.

The first laser 114 and the second laser 115 are electrically connected to the conversion circuit 121, and the feedback signal is fed back to the controller 117 through the analog to digital converter 118. Specifically, a laser detector is disposed inside the laser, and characteristic values such as power and wavelength of the laser light emitted by the laser can be converted into corresponding current signals. The conversion circuit 121 can output a corresponding current signal according to the power and wavelength of the laser light emitted by the first laser 114 and the second laser 115. The conversion circuit 121 can convert the current signal carrying the power of the laser and the wavelength information into a voltage signal carrying the power of the laser and the wavelength information. Since the voltage signal belongs to the analog signal, the controller 117 cannot directly recognize, and therefore, can pass the mode. The digital converter 118 converts the analog signal into a digital signal, and the analog to digital converter 118 can have multiple inputs for receiving the multiple analog signals output by the conversion circuit 121. Thus, the controller 117 can determine the power and wavelength of the laser light actually emitted by the first laser 114 and the second laser 115. When the controller 117 determines that the power of the actually emitted laser light does not coincide with the target power, or the wavelength of the actually emitted laser light does not coincide with the target wavelength, the control signal may be dynamically adjusted to adjust the power of the actually emitted laser light to the target power, or The wavelength of the actually emitted laser light is adjusted to the target wavelength. The power conversion circuit 122 is electrically connected to the first laser 114 and the second laser 115. The power conversion circuit 122 can convert the externally input voltage into the controller 117, the analog to digital converter 118, the digital to analog converter 119, the driving circuit 120, The operating voltage required by the conversion circuit 121, the first laser 114, and the second laser 115.

Optionally, the external interface 116 is a male interface.

Optionally, the external interface 116 includes fourteen pins, wherein: the first pin, the third pin, and the fourteenth pin are first preset working voltage pins; the fifth pin and the seventh pin are The thirteenth pin is a grounding pin; the ninth pin and the eleventh pin are a second preset working voltage pin; the second pin is a first control signal input pin; the fourth pin is a The second control signal input pin; the sixth pin is the first reset pin; the eighth pin is the data transmitting pin, the tenth pin is the data receiving pin; the twelfth pin is the second reset pin.

The first preset voltage may be positive 3.3V, and the second preset operating voltage may be negative 5.2V. If the tunable laser component is mounted on the host, the host can provide a working voltage to the tunable laser component through the external interface 116, for example, by providing a first predetermined operating voltage through the first pin, the third pin, and the fourteenth pin, The second preset working voltage is supplied through the ninth pin and the eleventh pin, and the reference voltage is supplied through the fifth pin, the seventh pin, and the thirteenth pin. The tunable laser component can also communicate with the host through other pins. For example, communication is performed by RS232 (one of the communication interfaces on the personal computer, an asynchronous transfer standard interface established by the EIA (Electronic Industries Association)), and I/O (input/output).

The second pin is a first control signal input pin, which may be referred to as a DIS pin, for controlling the tunable laser component to stop emitting laser light. The fourth pin is a second control signal input pin, which may be referred to as an SQR pin, for transmitting fault information of the tunable laser component and giving an alarm to the host. The sixth pin is the first reset pin, which can be called the MS pin, and is used to reset the communication function. When the host cannot communicate normally with the tunable laser component, the reset communication function can be triggered to restore the communication to normal. The eighth pin is a data transmitting pin, which may be referred to as a TxD pin, and the tenth pin is a data receiving pin, which may be referred to as an RxD pin, for receiving and transmitting data, and controlling the tunable laser component to emit different powers, Lasers with different wavelengths. The twelfth pin is a second reset pin, which may be referred to as a RST pin, for resetting various components in the tunable laser assembly, ie, resetting the hardware. The TxD pin and the RxD pin can be combined into RS232.

Different from the protocol, in the embodiment of the present application, the thirteenth pin is changed to the ground pin, and the fourteenth pin is changed to the first preset working voltage pin. In the protocol, the thirteenth pin is originally a third preset voltage pin. In the embodiment of the present application, the third preset voltage can be converted by using the first preset voltage and the second preset voltage, so no additional provide. In the agreement, the fourteenth pin is generally not used, so it is changed to the first preset working voltage pin. Since the operating voltages of the first laser 114 and the second laser 115 are from the first predetermined operating voltage, and when the first laser 114 and the second laser 115 emit laser light, the required electric energy is larger, so the current is larger, and one tube The current that the foot can flow is limited, so that a plurality of pins can be provided to provide the current required by the first laser 114 and the second laser 115, and the first laser 114 and the second laser 115 can be stably operated.

Optionally, the external interface 116 can be configured to receive a control command sent by the host. The control instruction includes indication information, and the indication information is used to indicate that the control object of the control instruction is the first laser 114 or the second laser 115.

In implementations, the host and tunable laser components can communicate via control commands. Control commands include sending a command frame and returning a command frame.

During communication, the host can issue a 4-byte transmit command frame to the tunable laser component. In the transmit command frame, the 31st to 28th bits are check digits, and the 27th bit is the transmit command communication check bit, which may also be referred to as the LstRsp bit, for indicating whether the data checksum received in the communication is correct. The 25th bit is 0, and the 24th bit indicates whether the command is a read operation or a write operation. Bits 23 through 16 are the values of the registers. The host can control the first laser 114 and the second laser 115 by assigning values to the registers. The 15th to 0th bits are specific command data for transmitting a command frame.

The tunable laser component can return a 4-byte return command frame to the host. In the return command frame, carrying the execution result of executing the send command frame. In the return command frame, the 31st to 28th bits are check digits, and the 27th bit is the return command communication check bit, which may also be referred to as the CE bit, to indicate whether the data checksum received in the communication is correct. The 25th and 24th bits are the Status bit. The Status bit is used to indicate the status of the command execution. For example, the command can be executed successfully, the command is suspended, or the command execution fails. Bits 23 through 16 are the values of the registers. The 15th to 0th bits are specific command data for transmitting a command frame.

In the protocol, the 26th bit is not defined. In the embodiment of the present application, the 26th bit is defined as the indication information, and the control object for indicating the control instruction is the first laser 114 or the second laser 115. For example, in the transmission command frame, if the 26th bit is 0, it indicates that the command is to control the first laser 114, and if the 26th bit is 1, it indicates that the command is to control the second laser 115. In the return command frame, if the 26th bit is 1, it indicates that the command is returned by the first laser 114, and if the 26th bit is 0, it indicates that the command is returned by the second laser 115.

Alternatively, it is also possible to distinguish whether the control command is given to or from the first laser 114 or the second laser 115 by the 23rd to 16th bits of the control command. When the data range of the 23rd to 16th bits is 0x00 to 0x7F, it can be indicated that the control command is given to or from the first laser 114. When the data range of the 23rd to 16th bits is 0x80 to 0xFF, it can be indicated that the control command is given to or from the second laser 115.

Alternatively, the connecting member 113 may be a wire, a pin or a flexible plate.

It is preferably a flexible sheet because the stretchability of the flexible sheet is better and it is easier to use in a narrow space.

Optionally, the tunable laser assembly further includes a housing, and the first substrate 111 and the second substrate 112 are mounted inside the housing.

In an implementation, as shown in FIG. 3-a, when the first substrate 111 and the second substrate 112 are mounted inside the casing, the external interface 116, the screw hole 411, and the first laser can be seen outside the casing. 114. A tail pipe of the second laser 115.

Optionally, the housing includes an upper cover 211 and a base 212.

As shown in FIG. 1, when the upper cover 211 and the base 212 are not engaged, as shown in FIG. 3-a, the upper cover 211 and the base 212 are engaged with each other. In the base 212, there may be grooves to form an internal space for placing the devices.

Optionally, the interior of the base 212 further includes a fixed post 311. The first substrate 111 is mounted on the bottom surface of the base 212, and the second substrate 112 is mounted on the fixed post 311.

As shown in FIG. 1, the second substrate 112 can be mounted on the fixed post 311, and specifically can be stuck on the fixed post 311, so that the second substrate 112 can be fixed in a fixed position.

Optionally, a hollowed out area may be disposed on the base 212, and a heat conductive material may be installed in the hollowed out area. Thus, when the first substrate 111 is mounted on the base 212, the device at the corresponding position can be dissipated by the heat conductive material. Correspondingly, in the base 212, the first laser 114 and the second laser 115 may also be provided with a hollowed out area at the mounting position, and a heat conductive material may be installed in the hollowed out area. In this way, the first laser 114 and the second laser 115 can be helped to dissipate heat.

Optionally, the upper cover 211 and the base 212 are provided with a plurality of screw holes 411 corresponding to the positions.

Thus, when the screws are fixed by the screw holes 411, the upper cover 211 and the base 212 can be fixed together, and the elongated portion can even fix the tunable laser assembly to the main unit. In the agreement, the upper cover 211 and the base 212 are respectively provided with three screw holes 411 (the remaining screw holes may not be included temporarily, because some screw holes do not fix the tunable laser assembly on the main body), when passing the When a substrate 111 and the second substrate 112 reduce the layout area of the substrate, more space can be reserved for other components, for example, leaving more space for the screw holes 411. Further, the screw holes 411 can be set as required by the protocol.

Optionally, a nut slot is disposed on a bottom surface of the base 212 corresponding to each of the screw holes 411, and a nut slot is disposed on a top surface of the upper cover 211 corresponding to each of the screw holes 411.

In practice, the size of the nut slot can be the same as the size of the screw cap of the screw to be installed, so that when the screw is installed through the nut slot, the nut can just fill the nut slot, on the upper cover 211 or A flat plane is formed on the base 212. It should be noted that, in the embodiment of the present application, the nut caps of the upper cover 211 and the base 212 are the same, so that when the screws pass through the nut holes on the upper cover 211, as shown in FIG. 3-a, When the nut groove of the base 212 is worn out, the screw cap of the screw on the upper cover 211 can be engaged with the nut hole on the upper cover 211. Of course, as shown in FIG. 3-b, when the screw passes through the nut hole of the base 212 and passes through the nut slot of the upper cover 211, the screw cap of the screw on the base 212 can be connected to the base 212. The nut holes fit together. That is, the screw can be mounted from the front of the tunable laser assembly or from the opposite side of the tunable laser assembly. Mounting from the front or back of the tunable laser assembly depends on how the host's thermal material is installed. Since the surface of the tunable laser component that requires heat conduction needs to be bonded to the thermally conductive material on the host, the screw can be mounted from the front of the tunable laser assembly depending on the specific installation, or the screw can be removed from the tunable laser assembly. The installation is reversed and the installation method is more flexible.

The tunable laser component provided by the present application includes a first substrate 111, a second substrate 112, a connecting component 113, a first laser 114, a second laser 115, an external interface 116, a controller 117, an analog to digital converter 118, and a digital mode The converter 119, the drive circuit 120, the conversion circuit 121, and the power conversion circuit 122. The first substrate 111 is electrically connected to the second substrate 112 through the connecting member 113, and the second substrate 112 is mounted above the first substrate 111. The first laser 114, the second laser 115, the external interface 116, the controller 117, and the module Some of the digital converter 118, the digital-to-analog converter 119, the driving circuit 120, the conversion circuit 121, and the power conversion circuit 122 are electrically connected to the first substrate 111, and the other components are electrically connected to the second substrate 112. Thus, the substrate is divided into the first substrate 111 and the second substrate 112, and the first substrate 111 and the second substrate 112 are connected to the module having the upper and lower structures by the connecting member 113, thereby saving the installation space. Furthermore, even if there are many devices in the tunable laser component and the required layout space is large, the size of the tunable laser component provided by the present application can be limited to the range specified by the protocol. Thus, the tunable laser assembly provided by the present application is easier to install on a finished host.

Other embodiments of the present application will be readily apparent to those skilled in the <RTIgt; The application is intended to cover any variations, uses, or adaptations of the application, which are in accordance with the general principles of the application and include common general knowledge or common technical means in the art that are not disclosed herein. . The specification and examples are to be regarded as illustrative only,

It is to be understood that the invention is not limited to the details of the details and The scope of the present application is limited only by the accompanying claims.

Claims

A tunable laser component, comprising: a first substrate, a second substrate, a connecting component, a first laser, a second laser, an external interface, a controller, an analog to digital converter, and a number An analog converter, a drive circuit, a conversion circuit, and a power conversion circuit, wherein:

The first substrate is electrically connected to the second substrate through the connecting member, and the second substrate is mounted above the first substrate;

The first laser, the second laser, the external interface, the controller, the analog to digital converter, the digital to analog converter, the driving circuit, the conversion circuit, and the power conversion Some of the components in the circuit are mounted on the first substrate, and other components are mounted on the second substrate.
The tunable laser assembly of claim 1 wherein said tunable laser assembly further comprises a housing, said first substrate and said second substrate being mounted within said housing.
The tunable laser assembly of claim 2 wherein said housing includes an upper cover and a base.
The tunable laser assembly according to claim 3, wherein the inside of the base further comprises a fixing post, the first substrate is mounted on a bottom surface in the base, and the second substrate is mounted on the bottom Above the fixed pillar.
The tunable laser module according to claim 3, wherein the upper cover and the base are provided with a plurality of screw holes corresponding to the positions.
The tunable laser component according to claim 5, wherein a nut slot is disposed on a bottom surface of the base corresponding to each screw hole, and each screw hole is corresponding to a top surface of the upper cover The position is set with a nut slot.
The tunable laser assembly of claim 1 wherein said connecting member is a wire, a pin header or a flex.
The tunable laser assembly of claim 1 wherein said external interface is a male interface.
The tunable laser assembly of claim 1 wherein said external interface comprises fourteen pins, wherein:

The first pin, the third pin and the fourteenth pin are first preset working voltage pins;

The fifth pin, the seventh pin, and the thirteenth pin are ground pins;

The ninth pin and the eleventh pin are second preset working voltage pins;

The second pin is a first control signal input pin;

The fourth pin is a second control signal input pin;

The sixth pin is the first reset pin;

The eighth pin is a data transmitting pin, and the tenth pin is a data receiving pin;

The twelfth pin is the second reset pin.
The tunable laser component according to claim 1, wherein the external interface is configured to receive a control command sent by a host, wherein the control command includes indication information, and the indication information is used to indicate the control The control object of the command is the first laser or the second laser.