C-band Erbium-doped Fiber Pre-Amplifier

Table of Contents

1. Introduction of the C-band Erbium-doped Fiber Pre-Amplifier

2. Technical Specifications

3. Product Features

4. Typical Applications

5. Product details

6. Ordering Information

7. Datasheet and testsheet

8. Terms of quote and payment

9. Lead time

10. Operation steps

11. Operation Notes and Maintenance

12. Quality Assurance and After-Sales Service

Product Introduction

C-band Erbium-doped Fiber Pre-Amplifiers are designed to improve the sensitivity before the optical receiver. The Pre-amplifier is specially used for the amplification of small optical signals in the range of -45~25dbm. The typical gain of a small signal is as high as 35~45dB, and the noise is less than 4.5dB. They can be used for power amplification of laser signals in the C-band 1530~1565nm wavelength range. Automatic Current Control(ACC) working mode. Commands and control software are provided for PC operation.

Product Specifications

Product Features

● Wide wavelength range-1530~1565nm; 

● Low noise <4.5dB;

● Touch screen/DB9 Female(RS232) communication interface for easy operation.

Product Applications

● Optical fiber communication;

● Optical fiber sensor;

● Fiber laser.

Product Details

● Typical Characteristical Curve

Ordering information

eg:EDFA-PA-C-35-SM-M

(Order information:C-band Erbium-doped Fiber Pre-Amplifier,35dBmsmall signal gain, with SMF-28efiber,module package).

For other customized requirements, please contact: sales06@boxoptronics.com

Datasheet and testsheet

Datasheet

Testsheet

Terms of quote and payment

● Terms of quote

(1) EXW:

If you have a DHL/ UPS/ FedEx account, Box Optronics suggest using the EXW. We ship via your account; we don't charge the shipping cost.

(2) DAP:

If you don't have an account, please prepay the shipping cost for the products.

● Terms of payment

PayPal and T/T are available.

Lead time

It takes around 10-15working days for production. (If there are some in stock, it will be faster shipped.)

The international logistics might take 3-5 working days.

Operation Steps

Step1.Appearance:The front side of the EDFA is sequentially equipped with input and output optical fibers, an optical amplification output activation switch, a host computer communication interface (default RS232 DB9), a power indicator light, and a power cord (default DC 5V).

Step2.Power Supply:The power port is the default DC5.5×2.1mm power interface, and a matching DC5V DC power adapter will be provided when the product leaves the factory. The connection method between the power adapter and the EDFA module is shown in the figure below. Please be sure to use the original matching power adapter. Using an inappropriate power adapter will cause the EDFA to fail to work properly or damage the EDFA. A U-shaped connector power supply line can also be provided for users to connect to a switching power supply, but it should be proposed in advance during procurement.

Step3.Connecting Fiber Jumpers:Open the dust cap of the optical fiber connector, check the fiber end face, and confirm that there is no pollution and damage before connecting other optical fiber devices or testing equipment. For the output fiber of the high-power EDFA model, it is recommended to use the fusion splicing method for connection.

Setp4.Heat Dissipation:This erbium-doped fiber amplifier module generates a certain amount of heat. The bottom surface of the amplifier (the side without text) should be in close contact with the heat sink, heat dissipation fin, or the metal surface at the bottom of the user's chassis. Appropriate air cooling is recommended to achieve a good heat dissipation effect. The recommended optimum working environment temperature is -5 ~ +35℃. When the ambient temperature exceeds 50℃, the amplifier in the standby state will not start. When the ambient temperature exceeds 55℃, the amplifier in working state will automatically stop laser output and enter standby state for self-protection. When the ambient temperature drops to 50℃, the amplifier will automatically resume output.

Step5.Input Optical Power:This erbium-doped fiber amplifier has no threshold requirement for the input optical signal power. When the average power of the input optical signal is reduced to near zero power, the amplifier will still maintain the working state, and the output port will have spontaneous emission output. However, to obtain a more ideal amplification effect and signal-to-noise ratio, it is recommended to control the input optical power within the power range described in the test sheet or product specification.

Step6.Host Computer Control: This amplifier is a modular product and needs to be combined with dedicated host computer software to adjust and monitor the working state and operating parameters of the EDFA. The user's computer needs to install the USB-232 serial port driver program and EDFA host computer control software provided by our company. The USB-232 serial port driver program must be installed, otherwise the host computer software cannot connect and communicate with the EDFA module normally. It should be noted that the USB-232 serial port driver program should be consistent with the actual USB-232 serial port cable used. The software version number of the EDFA host computer software should be consistent with the software version number recorded on the product test sheet.

Step7. Host Computer Software Interface:The information that can be displayed by the host computer software includes the amplifier working mode, output optical power target value, pump laser current target value, and temperature monitoring status.

Step8. Specific Operation:After starting the host computer software, first select the correct serial port number in the serial port sequence PortList, click the OpenPort button to open the serial port. At this time, the Current Read and LDTemp windows will display the working current and pump temperature of the module. Enter the target optical power value in the TargetPower window and click the SET button. When the button switch of the EDFA module and the SoftActive button switch on the software are both turned on, the setting takes effect and the EDFA has optical power output.

Step9. Control Mode:The standard model of this fiber amplifier supports two working modes, automatic current control mode (ACC mode) and automatic power control mode (APC mode). You can switch between these two working modes through the WorkMode option. When switching, please note to turn off the Active button switch first. (* Some amplifier models only support ACC mode, such as EDFA-C-PA). In ACC mode, enter the pump current value in the Current window and click the SET button, or directly drag the left and right sliders to set the pump current value. In APC mode, enter the target optical power value in the TargetPower window and click the SET button.

Step10. Output Activation:When the Enable button switch on the front of the module and the SoftActive button switch on the software are both turned on, the setting takes effect and the amplifier has laser output, and the LASER indicator light is on. The ON/OFF button will be displayed in red. The OutputPower in the parameter monitoring area shows the current actual output optical power, CurRead shows the current pump current, and LDTemp shows the internal temperature.

Step11. Shutdown:First turn off the ON/OFF button switch on the side of the amplifier and the SoftActive button switch on the software, click ClosePort to close the serial port, and then close the software.

Step12. Parameter Memory:The mode and parameters set by the control software will be automatically saved inside the EDFA module and have the function of power-off memory. If there is no need to modify the EDFA parameters, it is not necessary to connect to the host computer when using it again.

Operation Notes and Maintenance

● If the output fiber needs to be connected to another fiber, it is recommended to use a fusion splicer.

● When starting up, first confirm that the power switch and key switch are turned off, and then connect the power supply. When shutting down, first turn off the key switch, and then disconnect the power supply after the output indicator light goes out. Do not directly cut off the power supply when the EDFA is working.

● Clean fiber connectors with a lint-free wipe and inspect with a fiber end-face detector before connection. Always connect/disconnect fibers without power to avoid end-face burning. The fiber optic connectors must be covered with dust caps.

● It is not recommended to frequently insert and unplug the output fiber connectors to avoid dust contamination, which may lead to increased insertion loss or burning of the fiber connector end face.

● Keep the equipment dry and store it in a dry place.

Quality Assurance and After-Sales Service

● Warranty Period:

Free repair or replacement for non-human-induced defects within 1 year from purchase. Paid maintenance services available after 1 year.

● Exclusions from Free Warranty:

During the free warranty period, free repair or replacement services will be provided for faults caused by product quality issues. However, Box Optronics retains the right to refuse free repair services in the following cases within the warranty period:

(1) Damage caused by natural factors (e.g., lightning, dust) or environmental influences.

(2) Malfunctions due to improper operation by the user.

(3) Obvious physical damage caused by human error.

(4) Unauthorized disassembly, modification, or repair.

(5) Altered or incomplete warranty labels on the housing.

(6) Damage or loss during transportation.