CN216818942U - Semiconductor optical amplifier drive control device - Google Patents
Semiconductor optical amplifier drive control device Download PDFInfo
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- CN216818942U CN216818942U CN202220068700.4U CN202220068700U CN216818942U CN 216818942 U CN216818942 U CN 216818942U CN 202220068700 U CN202220068700 U CN 202220068700U CN 216818942 U CN216818942 U CN 216818942U
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Abstract
The present invention relates to a semiconductor optical amplifier drive control device, comprising: the device comprises a semiconductor optical amplifier, a temperature control circuit, a pulse conversion circuit, a constant voltage drive circuit and a constant current drive circuit; the semiconductor optical amplifier is respectively and electrically connected with the temperature control circuit, the constant voltage driving circuit and the constant current driving circuit; the pulse conversion circuit is respectively electrically connected with the constant voltage drive circuit and the constant current drive circuit; the temperature control circuit is used for controlling the temperature of the semiconductor optical amplifier; the pulse conversion circuit is used for converting an external pulse signal into a preset pulse signal; the constant voltage driving circuit is used for converting the power supply voltage into a preset voltage; the constant current driving circuit is used for converting the power supply current into preset current. According to the semiconductor optical amplifier drive control device, the constant voltage drive circuit and the constant current drive circuit are adopted, the current can be controlled, the reverse voltage is applied, the extinction ratio of the SOA can be improved to a greater extent, and the optical amplification performance of the SOA is fully exerted.
Description
Technical Field
The utility model relates to the technical field of semiconductor laser driving, in particular to a semiconductor optical amplifier driving control device.
Background
A semiconductor Optical amplifier, also called soa (semiconductor Optical amplifier), is a device for amplifying an Optical signal, and can be used to improve data transmission power and extend transmission distance. In the field of optical fiber sensing, the power of an optical signal after long-distance transmission is low, and the receiving requirement of a photodiode assembly cannot be met due to the excessively low power of the optical signal, so that a semiconductor optical amplifier is often added in front of a receiving end to amplify the optical signal.
The SOA is a device that amplifies an optical signal by applying a forward current and absorbs the optical signal by applying a reverse bias voltage, and a conventional SOA drive control apparatus generally employs a constant voltage type drive or a constant current type drive.
Although the constant-voltage type drive can obtain a narrower pulse width, the current is uncontrollable, and the risk of burning out a device easily exists.
SUMMERY OF THE UTILITY MODEL
In view of the above, there is a need to provide a semiconductor optical amplifier driving control apparatus, which solves the problem in the prior art that current controllability and reverse bias voltage of the SOA cannot be achieved at the same time.
In order to achieve the technical purpose, the utility model adopts the following technical scheme:
in a first aspect, the present invention provides a semiconductor optical amplifier drive control apparatus, including: the semiconductor optical amplifier comprises a semiconductor optical amplifier, a temperature control circuit, a pulse conversion circuit, a constant voltage drive circuit and a constant current drive circuit; the semiconductor optical amplifier is respectively and electrically connected with the temperature control circuit, the constant voltage driving circuit and the constant current driving circuit; the pulse conversion circuit is respectively electrically connected with the constant voltage driving circuit and the constant current driving circuit;
the temperature control circuit is used for controlling the temperature of the semiconductor optical amplifier; the pulse conversion circuit is used for converting the external pulse signal into a preset pulse signal; the constant voltage driving circuit is used for converting the power supply voltage into a preset voltage; the constant current driving circuit is used for converting the power supply current into preset current.
Preferably, the temperature control circuit includes: the ADN8831 chip, a driving circuit and a power supply circuit; the TECP pin and the TECN pin of the ADN8831 chip are respectively electrically connected with the positive electrode and the negative electrode of the driving circuit; the VDD pin and the PGND pin of the ADN8831 chip are electrically connected with the power supply circuit.
Preferably, the set temperature value is input to a TEMPSET pin of the ADN8831 chip; r of ADN8831 chipTHThe lead and the AGND lead are connected with a semiconductor optical amplifier.
Preferably, the pulse conversion circuit comprises an IC3 chip; the A1 pin of the IC3 chip is an input pin of a pulse signal; pin B1 of the IC3 chip is the output pin for the pulse signal.
Preferably, the constant voltage driving circuit includes a power conversion circuit and an analog switch control circuit; the power supply conversion circuit is electrically connected with the analog switch control circuit; the analog switch control circuit is electrically connected with the semiconductor optical amplifier.
Preferably, the analog switch control circuit is an IC10 chip; the COM pin of the IC10 chip is electrically connected with the negative electrode of the semiconductor optical amplifier; an NC pin of the IC10 chip is an input pin; the IN pin of the IC10 chip is the enable pin.
Preferably, the power conversion circuit includes a first linear regulator and a second linear regulator; one end of the first linear voltage stabilizer is connected with the input, the other end of the first linear voltage stabilizer is electrically connected with the anode of the semiconductor optical amplifier, one end of the second linear voltage stabilizer is connected with the input, and the other end of the second linear voltage stabilizer is electrically connected with the NC pin of the IC10 chip.
Preferably, the constant current driving circuit comprises a current setting circuit and a voltage-to-current control circuit; the current setting circuit is electrically connected with the voltage-to-current control circuit; the voltage-to-current control circuit is electrically connected with the semiconductor optical amplifier.
Preferably, the voltage-to-current control circuit comprises an operational amplifier U1A, a transistor Q1, a resistor R1, R2 and R3; pin 3 of the operational amplifier U1A is electrically connected to one end of a resistor R1, pin 2 of the operational amplifier U1A is electrically connected to one end of a resistor R3, the other end of the resistor R3 is grounded, pin 1 of the operational amplifier U1A is electrically connected to one end of the resistor R2, the other end of the resistor R2 is electrically connected to the base of a transistor Q1, the emitter of the transistor Q1 is electrically connected to pin 2 of the operational amplifier U1A, and the collector of the transistor Q1 is electrically connected to the cathode of the semiconductor optical amplifier.
Preferably, the current setting circuit is also electrically connected with the pulse conversion circuit; the current setting circuit receives the electric signal of the pulse conversion circuit and converts the electric signal into a pulse signal.
The beneficial effects of adopting the above embodiment are: according to the semiconductor optical amplifier drive control device provided by the utility model, the input electric signal is converted into the electric signal meeting the requirement through the pulse conversion circuit, the electric signal can be processed through the constant current drive circuit or the constant voltage drive circuit, and then the processed electric signal is sent to the semiconductor optical amplifier, so that reverse bias can be realized, the input current can be controlled, the extinction ratio of the semiconductor optical amplifier is improved, and the optical amplification performance of the semiconductor optical amplifier is fully exerted.
Drawings
Fig. 1 is a schematic block diagram of an embodiment of a semiconductor optical amplifier driving control apparatus according to the present invention;
FIG. 2 is a schematic circuit diagram of a temperature control circuit according to an embodiment of the present invention;
FIG. 3 is a circuit diagram of a pulse converting circuit according to an embodiment of the present invention;
FIG. 4 is a circuit diagram of a constant voltage driving circuit according to an embodiment of the present invention;
fig. 5 is a circuit diagram of a voltage-to-current control circuit according to an embodiment of the present invention.
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the utility model and together with the description, serve to explain the principles of the utility model and not to limit the scope of the utility model.
In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the utility model. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Before describing embodiments of the present invention, the relevant words are paraphrased:
a semiconductor Optical amplifier, also called soa (semiconductor Optical amplifier), is a device for amplifying an Optical signal, and can be used to improve data transmission power and extend transmission distance.
The present invention provides a semiconductor optical amplifier drive control device, which will be described below.
Referring to fig. 1, fig. 1 is a schematic frame diagram of an embodiment of a semiconductor optical amplifier driving control device according to the present invention, and an embodiment of the present invention discloses a semiconductor optical amplifier driving control device, including: a semiconductor optical amplifier 10, a temperature control circuit 20, a pulse conversion circuit 30, a constant voltage drive circuit 40, and a constant current drive circuit 50; the semiconductor optical amplifier 10 is electrically connected with the temperature control circuit 20, the constant voltage driving circuit 40 and the constant current driving circuit 50 respectively; the pulse conversion circuit 30 is electrically connected to the constant voltage drive circuit 40 and the constant current drive circuit 50, respectively;
the temperature control circuit is used for controlling the temperature of the semiconductor optical amplifier; the pulse conversion circuit is used for converting the external pulse signal into a preset pulse signal; the constant voltage driving circuit is used for converting the power supply voltage into a preset voltage; the constant current driving circuit is used for converting the power supply current into preset current.
In the above embodiment, the pulse conversion circuit receives an external pulse signal, processes the external pulse signal to obtain a pulse signal meeting the circuit requirement, and selects an appropriate driving mode according to the actual requirement through the constant voltage driving circuit and the constant current driving circuit, and performs amplification processing through the SOA device, thereby meeting the constant voltage driving or the constant current driving.
Compared with the prior art, according to the drive control device of the semiconductor optical amplifier provided by the embodiment, the pulse conversion circuit is used for converting the input electric signal into the electric signal meeting the requirement, the constant current drive circuit or the constant voltage drive circuit is used for processing the electric signal, and the processed electric signal is sent to the semiconductor optical amplifier, so that reverse bias can be realized, the input current can be controlled, the extinction ratio of the semiconductor optical amplifier is improved, and the optical amplification performance of the semiconductor optical amplifier is fully exerted.
Referring to fig. 2, fig. 2 is a circuit schematic diagram of a temperature control circuit according to an embodiment of the present invention, in some embodiments of the present invention, the temperature control circuit includes: the ADN8831 chip, a driving circuit and a power supply circuit; the TECP pin and the TECN pin of the ADN8831 chip are respectively electrically connected with the positive electrode and the negative electrode of the driving circuit; the VDD pin and the PGND pin of the ADN8831 chip are electrically connected with the power supply circuit.
In the above embodiment, the temperature control circuit may monitor the temperature of the SOA device, compare the monitored temperature with a set temperature, and adjust the temperature of the SOA device to the set temperature, so as to avoid that an excessive temperature or an insufficient temperature affects amplification of the pulse signal, and obtain a stable and reliable pulse amplification signal.
In some embodiments of the utility model, the temperature to be setInputting the value to a TEMPSET pin of an ADN8831 chip; r of ADN8831 chipTHThe lead and the AGND lead are connected with a semiconductor optical amplifier.
In the above embodiment, the temperature is controlled by the ADN8831 chip, the temperature is determined according to actual needs, and a set temperature value is input to the TEMPSET pin of the ADN8831 chip, and the R of the ADN8831 chipTHAnd the pins and the AGND pin are connected with the semiconductor optical amplifier to realize the monitoring of the temperature of the SOA device.
Referring to fig. 3, fig. 3 is a circuit diagram of an embodiment of a pulse converting circuit according to the present invention, in some embodiments of the present invention, the pulse converting circuit includes an IC3 chip; the A1 pin of the IC3 chip is an input pin of a pulse signal; pin B1 of the IC3 chip is the output pin for the pulse signal.
In the above embodiment, the pulse conversion circuit receives an external pulse signal input through the a1 pin of the IC3 chip, and outputs the converted pulse to the constant voltage driving circuit or the constant current driving circuit through the B1 pin. The pulse conversion circuit is mainly used for converting an external pulse signal into a circuit pulse signal meeting requirements.
In some embodiments of the present invention, the constant voltage driving circuit includes a power conversion circuit and an analog switch control circuit; the power supply conversion circuit is electrically connected with the analog switch control circuit; the analog switch control circuit is electrically connected with the semiconductor optical amplifier.
In the above embodiment, the external power supply converts the voltage into a voltage suitable for the SOA to operate in reverse through the power conversion circuit, and then applies the voltage to both ends of the SOA through the analog switch control circuit.
Referring to fig. 4, fig. 4 is a circuit diagram of a constant voltage driving circuit according to an embodiment of the present invention, in which an analog switch control circuit is an IC10 chip according to some embodiments of the present invention; the COM pin of the IC10 chip is electrically connected with the negative electrode of the semiconductor optical amplifier; an NC pin of the IC10 chip is an input pin; the IN pin of the IC10 chip is the enable pin.
In the above embodiment, VCC1 in the constant voltage driving circuit is an input terminal, and a pulse signal is input from VCC1, and VCC2 and VCC3 are different output terminals, and different pulse signals are output. It should be noted that the IN pin of the IC10 chip receives the start signal, which is also a pulse signal, and then starts to operate.
In some embodiments of the present invention, a power conversion circuit includes a first linear regulator and a second linear regulator; one end of the first linear voltage stabilizer is connected with the input, the other end of the first linear voltage stabilizer is electrically connected with the anode of the semiconductor optical amplifier, one end of the second linear voltage stabilizer is connected with the input, and the other end of the second linear voltage stabilizer is electrically connected with the NC pin of the IC10 chip.
In the above embodiment, the first linear regulator and the second linear regulator have the same input and different outputs, and the two different linear regulators can divide the same input into different outputs, thereby achieving voltage inversion.
In some embodiments of the present invention, the constant current driving circuit includes a current setting circuit and a voltage-to-current control circuit; the current setting circuit is electrically connected with the voltage-to-current control circuit; the voltage-to-current control circuit is electrically connected with the semiconductor optical amplifier.
In the above embodiment, the current value of the target is determined by the current setting circuit, and then the input voltage signal is converted into the desired target current signal by the voltage-to-current control circuit, and the target current signal is input into the SOA device.
Referring to fig. 5, fig. 5 is a circuit schematic diagram of an embodiment of a voltage-to-current control circuit provided in the present invention, in some embodiments of the present invention, the voltage-to-current control circuit includes an operational amplifier U1A, a transistor Q1, a resistor R1, a resistor R2, and a resistor R3; pin 3 of the operational amplifier U1A is electrically connected to one end of a resistor R1, pin 2 of the operational amplifier U1A is electrically connected to one end of a resistor R3, the other end of the resistor R3 is grounded, pin 1 of the operational amplifier U1A is electrically connected to one end of the resistor R2, the other end of the resistor R2 is electrically connected to the base of a transistor Q1, the emitter of the transistor Q1 is electrically connected to pin 2 of the operational amplifier U1A, and the collector of the transistor Q1 is electrically connected to the cathode of the semiconductor optical amplifier.
In the above embodiment, the operational amplifier U1A amplifies the input signal, the amplified signal is input to the transistor Q1, and the transistor Q1 adjusts the amplified signal to the required constant current value.
In some embodiments of the utility model, the current setting circuit is further electrically connected to the pulse conversion circuit; the current setting circuit receives the electric signal of the pulse conversion circuit and converts the electric signal into a pulse signal.
In the above embodiment, the current setting circuit sets the operating current of the SOA, and then sends the operating current to the voltage-to-current control circuit to implement constant current control.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (10)
1. A semiconductor optical amplifier drive control device characterized by comprising: the semiconductor optical amplifier comprises a semiconductor optical amplifier, a temperature control circuit, a pulse conversion circuit, a constant voltage drive circuit and a constant current drive circuit; the semiconductor optical amplifier is respectively and electrically connected with the temperature control circuit, the constant voltage driving circuit and the constant current driving circuit; the pulse conversion circuit is respectively electrically connected with the constant voltage driving circuit and the constant current driving circuit;
the temperature control circuit is used for controlling the temperature of the semiconductor optical amplifier; the pulse conversion circuit is used for converting an external pulse signal into a preset pulse signal; the constant voltage driving circuit is used for converting the power supply voltage into a preset voltage; the constant current driving circuit is used for converting the power supply current into preset current.
2. The semiconductor optical amplifier drive control device according to claim 1, wherein the temperature control circuit comprises: the ADN8831 chip, a driving circuit and a power supply circuit; the TECP pin and the TECN pin of the ADN8831 chip are respectively and electrically connected with the positive electrode and the negative electrode of the driving circuit; the VDD pin and the PGND pin of the ADN8831 chip are electrically connected with a power supply circuit.
3. The semiconductor optical amplifier driving and controlling device as claimed in claim 2, wherein a set temperature value is inputted to a TEMPSET pin of the ADN8831 chip; r of the ADN8831 chipTHThe pin and the AGND pin are connected with the semiconductor optical amplifier.
4. The semiconductor optical amplifier drive control device according to claim 1, wherein the pulse conversion circuit comprises an IC3 chip; the A1 pin of the IC3 chip is an input pin of a pulse signal; the pin B1 of the IC3 chip is the output pin of the pulse signal.
5. The semiconductor optical amplifier drive control device according to claim 1, wherein the constant voltage drive circuit includes a power conversion circuit and an analog switch control circuit; the power supply conversion circuit is electrically connected with the analog switch control circuit; the analog switch control circuit is electrically connected with the semiconductor optical amplifier.
6. The semiconductor optical amplifier drive control device according to claim 5, wherein the analog switch control circuit is an IC10 chip; the COM pin of the IC10 chip is electrically connected with the negative electrode of the semiconductor optical amplifier; the NC pin of the IC10 chip is an input pin; the IN pin of the IC10 chip is the enable pin.
7. The semiconductor optical amplifier drive control device according to claim 6, wherein the power conversion circuit includes a first linear regulator and a second linear regulator; one end of the first linear voltage stabilizer is connected with the input, the other end of the first linear voltage stabilizer is electrically connected with the anode of the semiconductor optical amplifier, one end of the second linear voltage stabilizer is connected with the input, and the other end of the second linear voltage stabilizer is electrically connected with the NC pin of the IC10 chip.
8. The semiconductor optical amplifier drive control device according to claim 1, wherein the constant current drive circuit comprises a current setting circuit and a voltage-to-current control circuit; the current setting circuit is electrically connected with the voltage-to-current control circuit; the voltage-to-current control circuit is electrically connected with the semiconductor optical amplifier.
9. The semiconductor optical amplifier driving and controlling device according to claim 8, wherein the voltage-to-current control circuit comprises an operational amplifier U1A, a transistor Q1, resistors R1, R2 and R3; no. 3 pin of operational amplifier U1A is connected with the one end of resistance R1 electricity, No. 2 pin of operational amplifier U1A is connected with the one end of resistance R3 electricity, the other end ground connection of resistance R3, No. 1 pin of operational amplifier U1A is connected with the one end of resistance R2 electricity, the other end of resistance R2 with triode Q1's base electricity is connected, triode Q1's emitter with No. 2 pin of operational amplifier U1A is connected electrically, triode Q1's collecting electrode with semiconductor optical amplifier's negative pole electricity is connected.
10. The semiconductor optical amplifier drive control device according to claim 8, wherein the current setting circuit is further electrically connected to the pulse conversion circuit; the current setting circuit receives the electric signal of the pulse conversion circuit and converts the electric signal into a pulse signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220068700.4U CN216818942U (en) | 2022-01-12 | 2022-01-12 | Semiconductor optical amplifier drive control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220068700.4U CN216818942U (en) | 2022-01-12 | 2022-01-12 | Semiconductor optical amplifier drive control device |
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| Publication Number | Publication Date |
|---|---|
| CN216818942U true CN216818942U (en) | 2022-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220068700.4U Active CN216818942U (en) | 2022-01-12 | 2022-01-12 | Semiconductor optical amplifier drive control device |
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| CN (1) | CN216818942U (en) |
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- 2022-01-12 CN CN202220068700.4U patent/CN216818942U/en active Active
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