CN219420768U - Circuit compatible with SOA optical device and MPD optical device - Google Patents
Circuit compatible with SOA optical device and MPD optical device Download PDFInfo
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- CN219420768U CN219420768U CN202320184830.9U CN202320184830U CN219420768U CN 219420768 U CN219420768 U CN 219420768U CN 202320184830 U CN202320184830 U CN 202320184830U CN 219420768 U CN219420768 U CN 219420768U
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Abstract
The utility model relates to a circuit compatible with an SOA optical device and an MPD optical device, which comprises a PCB board, wherein an IIC interface, an SOA current control unit, an MPD monitoring unit and a replaceable SOA/MPD optical device are arranged on the PCB board; the IIC interface is connected with the control unit through a bus, and the SOA current control unit and the MPD monitoring unit are both connected with the IIC interface; the SOA/MPD optical device is connected with the SOA current control unit through a detachable first adjusting resistor, and is connected with the MPD monitoring unit through a detachable second adjusting resistor; according to the utility model, the circuits compatible with the SOA optical device and the MPD optical device are designed on the same PCB, so that the SOA optical device and the MPD optical device are switched only by switching corresponding resistors, the material management and control can be reduced, the use is convenient, and the cost price is lower than that of the circuits independently using the SOA optical device and the MPD optical device.
Description
Technical Field
The utility model relates to the technical field of optical modules, in particular to a circuit compatible with an SOA optical device and an MPD optical device.
Background
In the application of optical modules, in order to improve the data transmission power and expand the transmission distance, the output optical power of the module is increased, and at this time, an SOA optical device (SOA: semiconductor Optical Amplifier, i.e., a semiconductor amplifier) is one of optical amplifiers, and uses a semiconductor material as a gain medium, so that the optical module can amplify the power of small signal light without obviously reducing other optical indexes, and can be widely applied to optical communication transmission systems and optical fiber sensing systems as a preamplifier, a wavelength converter, a high-speed optical shutter, and the like.
Among the usual optical devices are monitor photodiodes (MPD: monitor Photo Diode, MPD optical device) for monitoring the output optical power.
However, the optical component needs too many pins for output because of small size, and in order to reduce the number of pins when using SOA optical devices, MPD pins are generally eliminated. In the optical module application circuit, the circuit connection mode outside the MPD pin and the SOA pin is not used, and the circuits of the MPD pin and the SOA pin which are mostly used at present cannot be compatible in the same PCB (Printed Circuit Board ).
Disclosure of Invention
Based on the above description, the utility model provides a circuit compatible with an SOA optical device and an MPD optical device, and the circuit compatible with the SOA optical device and the MPD optical device is designed on the same PCB board, so that the SOA optical device and the MPD optical device are switched only by switching corresponding resistors, the material management and control can be reduced, the use is convenient, and the cost price is lower than that of a single circuit using the SOA optical device and the MPD optical device.
The technical scheme for solving the technical problems is as follows: a circuit compatible with an SOA optical device and an MPD optical device comprises a PCB, wherein an IIC interface, an SOA current control unit, an MPD monitoring unit and a replaceable SOA/MPD optical device are arranged on the PCB; the IIC interface is connected with the control unit through a bus, and the SOA current control unit and the MPD monitoring unit are both connected with the IIC interface; the SOA/MPD optical device is connected with the SOA current control unit through a detachable first adjusting resistor, and is connected with the MPD monitoring unit through a detachable second adjusting resistor.
On the basis of the technical scheme, the utility model can be improved as follows.
Further, the SOA/MPD optical device is a replaceable SOA optical device or an MPD optical device; and the SOA pin of the SOA optical device or the PD pin of the MPD optical device is connected with the SOA current control unit through a detachable first adjusting resistor, and is connected with the MPD monitoring unit through a detachable second adjusting resistor.
Furthermore, a compatible chip is arranged on the PCB, and the IIC interface, the SOA current control unit and the MPD monitoring unit are integrated in the compatible chip.
Further, the compatible chip is provided with an SDA pin and an SCL pin, the IIC interface is connected with the SDA pin and the SCL pin, and the SDA pin and the SCL pin are connected with the bus.
Further, the compatible chip is provided with an LD pin and a VDD pin, the SOA current control unit is connected with the LD pin and the VDD pin, the LD pin is connected with the SOA/MPD optical device through a first adjusting resistor, and the VDD pin is used for connecting the power supply voltage of the SOA current control unit.
Further, the compatible chip is provided with an MPD pin, the MPD monitoring unit is connected with the MPD pin, and the MPD pin is connected with the SOA/MPD optical device through a second adjusting resistor.
Furthermore, the compatible chip is further provided with a VCC pin and a GND pin, the VCC pin is used for being connected with the power supply voltage of the compatible chip, and the GND pin is grounded.
Compared with the prior art, the technical scheme of the application has the following beneficial technical effects:
according to the utility model, by designing the circuits compatible with the SOA optical device and the MPD optical device on the same PCB, when the SOA/MPD optical device is replaced by the SOA optical device, only the first adjusting resistor is connected, and the second adjusting resistor is disconnected; when the SOA/MPD optical device is replaced by the MPD optical device, only the second adjusting resistor is connected, and the first adjusting resistor is disconnected; the application of the SOA optical device can be satisfied, the application of the MPD optical device can be satisfied, the material management and control can be reduced, the use is convenient, and meanwhile, the cost price is lower compared with that of a single SOA optical device circuit and a single MPD optical device circuit.
Drawings
FIG. 1 is a schematic diagram of the structure of an SOA optical device;
FIG. 2 is a schematic diagram of an MPD optical device;
FIG. 3 is a schematic diagram of an internal structure of a compatible chip according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram of circuit connection of a compatible chip according to an embodiment of the present utility model;
FIG. 5 is a schematic diagram of circuit connections of an SOA/MPD optical device according to an embodiment of the present utility model;
in the drawings, the list of components represented by the various numbers is as follows:
2. compatible chips; 21. IIC interface; 22. an SOA power supply control unit; 23. an MPD monitoring unit; 3.SOA/MPD optical device; 4. a bus; 5. and a control unit.
Detailed Description
In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Examples of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.
The circuit compatible with the SOA optical device and the MPD optical device comprises a PCB board, wherein a compatible chip 2 and a replaceable SOA/MPD optical device 3 are arranged on the PCB board. The SOA/MPD optical device 3 may be replaced by an SOA optical device or an MPD optical device.
As can be seen from fig. 1, the SOA optical device and the MPD optical device are defined differently except for the SOA pin and the MPD pin, and the other pins and the package size are completely compatible, so that one of the SOA optical device and the MPD optical device can be selectively mounted at the same position of the PCB board 1.
The compatible chip 2 is integrated with an IIC interface 21, an SOA current control unit 22 and an MPD monitoring unit 23. The SOA current control unit 22 and the MPD monitoring unit 23 are both connected with the IIC interface 21. And the compatible chip 2 is provided with an SDA pin, an SCL pin, a VDD pin, an LD pin, an MPD pin, a VCC pin, and a GND pin.
The IIC interface 21 connects the SDA pin and the SCL pin, and the SDA pin connects the control unit 5 through the bus 4 for communication with the control unit 5.
The SOA power control unit 22 is connected to the VDD pin and the LD pin. The VDD pin is connected to the power supply voltage vcc_ld of the SOA power supply control unit 22 through a filter circuit. The LD pin is used for outputting the driving current of the SOA optical device.
The MPD monitoring unit 23 is connected to an MPD pin, and the MPD pin is used for receiving the output current of the MPD optical device.
The VCC pin is connected with the power supply voltage VCCIN of the compatible chip 2 through a filter circuit, and the GND pin is grounded.
The SOA pin of the SOA optical device or the PD pin of the MPD optical device is grounded through a capacitor for filtering. And the SOA pin of the SOA optical device or the PD pin of the MPD optical device is connected with the LD pin of the compatible chip 2 through the detachable first adjusting resistor R1, and is connected with the MPD pin of the compatible chip 2 through the detachable second adjusting resistor R2.
When the SOA/MPD optical device 3 is replaced by an SOA optical device, only the first adjusting resistor R1 is connected, the second adjusting resistor R2 is disconnected, and the SOA power supply control unit 22 outputs driving current to the SOA optical device through the first adjusting resistor R1, so that the SOA optical device is driven to work.
When the SOA/MPD optical device 3 is replaced by an MPD optical device, only the second adjusting resistor R2 is connected, the first adjusting resistor R1 is disconnected, and the MPD monitoring unit 23 receives the output current from the MPD optical device through the second adjusting resistor R2 and converts the output current into a voltage signal, so that monitoring of the MPD optical device is realized.
The embodiment can meet the application of the SOA optical device and the application of the MPD optical device, can reduce material management and control and facilitate use, and has lower cost price compared with the single SOA optical device circuit and the MPD optical device circuit.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (7)
1. The circuit compatible with the SOA optical device and the MPD optical device is characterized by comprising a PCB, wherein an IIC interface, an SOA current control unit, an MPD monitoring unit and a replaceable SOA/MPD optical device are arranged on the PCB; the IIC interface is connected with the control unit through a bus, and the SOA current control unit and the MPD monitoring unit are both connected with the IIC interface; the SOA/MPD optical device is connected with the SOA current control unit through a detachable first adjusting resistor, and is connected with the MPD monitoring unit through a detachable second adjusting resistor.
2. The circuit of claim 1, wherein the SOA/MPD optical device is a replaceable SOA optical device or MPD optical device; and the SOA pin of the SOA optical device or the PD pin of the MPD optical device is connected with the SOA current control unit through a detachable first adjusting resistor, and is connected with the MPD monitoring unit through a detachable second adjusting resistor.
3. The circuit compatible with the SOA optical device and the MPD optical device according to claim 1, wherein a compatible chip is arranged on the PCB board, and the IIC interface, the SOA current control unit and the MPD monitoring unit are integrated in the compatible chip.
4. The circuit of claim 3, wherein the compatible chip is provided with an SDA pin and an SCL pin, the IIC interface is connected to the SDA pin and the SCL pin, and the SDA pin and the SCL pin are connected to the bus.
5. The circuit of claim 3, wherein the compatible chip is provided with an LD pin and a VDD pin, the SOA current control unit is connected to the LD pin and the VDD pin, the LD pin is connected to the SOA/MPD optical device through a first adjusting resistor, and the VDD pin is used for connecting a supply voltage of the SOA current control unit.
6. The circuit of claim 3, wherein the compatible chip is provided with an MPD pin, the MPD monitoring unit is connected to the MPD pin, and the MPD pin is connected to the SOA/MPD optical device through a second adjusting resistor.
7. The circuit of claim 3, wherein the compatible chip is further provided with a VCC pin for connecting a supply voltage of the compatible chip and a GND pin connected to ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320184830.9U CN219420768U (en) | 2023-01-31 | 2023-01-31 | Circuit compatible with SOA optical device and MPD optical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320184830.9U CN219420768U (en) | 2023-01-31 | 2023-01-31 | Circuit compatible with SOA optical device and MPD optical device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219420768U true CN219420768U (en) | 2023-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320184830.9U Active CN219420768U (en) | 2023-01-31 | 2023-01-31 | Circuit compatible with SOA optical device and MPD optical device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219420768U (en) |
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2023
- 2023-01-31 CN CN202320184830.9U patent/CN219420768U/en active Active
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