Tag Archives: fiber amplifier
EDFA-C-BA-23-SM-B1, User-Friendly Touch Screen Benchtop EDFA for Lab
EDFA-C-BA-23-SM-B is a high-performance benchtop C-band erbium doped fiber amplifier designed for optical communication testing, laboratory research and long-haul transmission systems. It delivers stable output power, high gain and low noise figure in a compact benchtop structure, ensuring excellent reliability and ease of operation. Ideal for telecom R&D, fiber sensing, optical signal amplification and precision measurement applications.
This product uses an LCD touchscreen for control and display of operating parameters. We can set the operating mode and adjust parameters on the screen. Click the Mode area to select the operating mode. In APC mode, we can adjust the power using the up and down arrows on the right. Alternatively, click the ‘PowerSet’ area and enter the desired power value on the pop-up keyboard. In ACC and AGC mode, we set the current and gain factor in the same way. In AGC mode, set the desired gain factor from 0 to 25dB. We can also directly input the desired value to set it.
The upper left corner of the screen is the status display area, showing the current real-time input power, output power, pump laser current, and pump laser temperature (LD Temp); the other areas are for control and parameter input.
The test report of this C-band 23dBm fiber amplifier.
CivilLaser’s Fiber Optic Amplifier YDFA-40-PM-B
Ytterbium-doped fiber amplifiers (YDFAs) utilize semiconductor lasers to pump ytterbium-doped fiber to generate gain, amplifying optical signals in the 1030–1080 nm wavelength range.
In modern photonics systems such as long-haul sensing, laser radar, coherent optical communication, and precision laboratory testing, high-power, polarization-stable optical amplification has become essential. The YDFA-40-PM-B benchtop ytterbium-doped fiber amplifier is engineered to address these requirements with a compact, reliable, and high-performance design.
The YDFA-40-PM-B serves a wide range of demanding fields:
• Coherent optical communications: long-haul transmission testing and system verification
• High-precision fiber sensing: DAS/DVS/OTDR systems and fiber optic gyroscopes
• High-power laser systems: material processing, metrology, and laser radar
• Scientific research: quantum optics, cold-atom experiments, and spectral analysis
With its plug-and-play design, the YDFA-40-PM-B simplifies system integration while reducing cascaded noise and complexity. It provides an all-in-one solution for researchers and engineers seeking high power, polarization stability, and consistent performance.

Whether you are developing next-generation communication links, building advanced sensing networks, or conducting cutting-edge laboratory research, the YDFA-40-PM-B 40dBm PM ytterbium-doped fiber amplifier delivers the power, reliability, and precision you need.
CivilLaser’s L-band EDFA: Redefining Optical Amplification Efficiency
Erbium-doped fiber amplifiers (EDFAs) are a series of optical amplifiers specifically designed for fiber lasers or fiber optic communication. They use a short-wavelength semiconductor laser to pump erbium-doped fiber to provide gain for C-band or L-band signal light, offering advantages such as high energy conversion efficiency, high gain, and low noise. Desktop EDFAs are convenient for experimental operation, with parameters set via the front panel. More compact modular EDFAs are also available for easier system integration. Both desktop and modular EDFAs support host computer software control or serial port command control.
This is an L-band erbium-doped fiber amplifier. This product uses an LCD touchscreen for control and display of operating parameters. We can see the amplifier’s current input and output power, Pump Current (C1/C2), and pump laser temperature (T1/T2) on the screen. We can set the operating mode and adjust parameters on the screen. Click the Mode area to select the operating mode. In APC mode, we can set the power. Click the ‘PowerSet’ area and enter the desired power value on the pop-up keyboard.
Press Enter to apply the settings. You can also adjust the power using the up and down arrows on the right. In ACC mode, you can set the pump current value.
Connecting the RS232 data cable allows for parameter settings via software.
The red ‘STOP’ button on the right is an emergency stop switch. If you need to stop the amplifier immediately during use, press the ‘STOP’ button. After troubleshooting, rotate the ‘STOP’ button clockwise to reset it and then restart the amplifier.
It is important to note that when the amplifier is in the light output state (with the activation switch on), it is strictly forbidden to plug, unplug, or connect the fiber optic patch cord connector. Otherwise, it is very easy to damage the end face of the fiber optic patch cord connector and the amplifier itself, which may lead to failure.
The test report for this L-band 37dBm fiber amplifier.
This product utilizes advanced semiconductor laser pumping and rare-earth gain fiber, combined with a dedicated integrated circuit chip, to achieve highly stable, high-gain, and low-power operation. The laser output is coupled through PM fiber, making it easy to use. It can be widely used in testing and experiments in optical communication, fiber lasers, fiber optic sensing, and other fields.
C+L Band 26dBm 400mW Erbium-doped Fiber Amplifier
With the rapid development of information technology, optical fiber communication has become the cornerstone of modern communication networks. In optical fiber communication systems, erbium-doped fiber amplifiers (EDFA) play a vital role, and C+L Band 26dBm erbium-doped fiber amplifier is one of the best.
C+L Band 26dBm Erbium-doped Fiber Amplifier is a high-efficiency fiber amplifier that can achieve efficient signal amplification in the C+L band. Its high power output of 26dBm enables the signal to maintain a high signal-to-noise ratio and stability during transmission, effectively reducing signal attenuation and distortion, thus improving the overall performance of the optical fiber communication system.
This is a C+L Band 26dBm EDFA Amplifier. The wavelength Range is 1528~1563nm & 1570~1603nm. The EDFA supports two working modes, ACC and APC, and the two working modes can be switched. In APC mode, the output power can be adjusted. In ACC mode, the operating current can be adjusted. Our desktop EDFA can be controlled by buttons. PC control software can be connected through RS232 serial port.
The test report of this EDFA.
C+L Band 26dBm erbium-doped fiber amplifier is a powerful and excellent optical fiber communication equipment, which plays an irreplaceable role in modern communication networks. With the continuous advancement of technology and the expansion of application fields, it will continue to contribute to the development of optical fiber communications.
C-Band 37dBm SM Fiber Optical Amplifier Erbium-doped
This is a C-band 37dBm high power erbium-doped fiber amplifier. The high-power EDFA module comes with a heat sink. We can control EDFA through software or host computer commands. Both PM and SM fibers can be customized. This is a modular design, and the desktop EDFA can also be customized, and the desktop EDFA can be controlled by buttons.
High power erbium doped fiber amplifier (EYDFA-HP-BA),based on amplification technology of double clad erbium doped fiber, unique optical packaging technology, and with reliable hardware light path protection design, realized high power laser output in C band or L band, It has the advantages of high gain and low noise, and can be widely used in CATV, optical fiber communication, laser radar, etc..
The interface of the control software.
Please go to CivilLaser for more details adout erbium-doped fiber amplifier.
C-Band 37dBm PM Erbium-doped Fiber Amplifier
The C-band high-power polarization-maintaining erbium-doped fiber amplifier is based on the principle of laser amplification of optical signals in erbium-doped fibers, and adopts a unique multi-stage optical amplification design and reliable high-power laser heat dissipation technology to achieve high-power lasers with wavelengths of 1535~1565nm, PM output. It has the advantages of high power, high extinction ratio and low noise, and can be used in optical fiber communication, lidar, etc.
This is a 37dBm polarization maintaining EDFA. Both PM and SM fibers can be customized. The high power erbium-doped fiber amplifier module type has heat sink. We can control the EDFA through software or host computer commands.
The interface of the control software.
The test report of 37dBm EDFA.
2023 New PM Erbium-doped Fiber Amplifier
This is a C-Band Erbium Doped Fiber Amplifier, high gain and low noise. It is the latest style of 2023, with a silver shell. The heat sink of the fiber amplifier is upward. This is Polarization-Maintaining Erbium-Doped Fiber Amplifier, SM Fiber EDFA can also be customized.
Polarization-maintaining erbium-doped fiber amplifier (EDFA-PM) is a family of fiber amplifier products dedicated to polarization-maintaining fiber systems. It has the advantages of high gain, low noise, and polarization retention. It supports host computer software control. Need to provide bench-top or rack-mount package, accept parameter customization.
The data sheet of C-Band 27dBm PM EDFA.
It’s Optical Spectrum of Amplified 1550.12nm signal.
Output power VS Pump current curve.
The power stability test @0.5W, 0dBm input, in APC mode.
37dBm Yb-doped SM Fiber Amplifier Benchtop
It’s a high power Ytterbium-doped optical amplifier, its output power is 37dBm. And high power YDFA built-in 3 cooling fans. The software control function can be customized, and the default is button control. The current working mode, current and output power are displayed on the front display.
It supports APC and ACC two working modes, and the two modes can be switched. In ACC mode, the working current can be adjusted. In APC mode, the output power can be adjusted.
The test report of YDFA-37-SM.
1030~1100nm 10W PM Optical Fiber Amplifier YDFA
Ytterbium-doped fiber amplifier (YDFA) generates gain by pumping ytterbium-doped fiber with a semiconductor laser, and is used to amplify laser signals in the 1030~1100nm band. PM980 polarization-maintaining fiber output, the output power is continuously adjustable, and has the advantages of high gain and low noise. The desktop YDFA is convenient for experimental operation, and the user can adjust the pump current and output power through the buttons on the front panel. A more compact modular YDFA is also available, which is convenient for users’ system integration. Both desktop YDFA and modular YDFA can support PC software control and serial port command control.
The following video explains the 40dBm polarization maintaining YDFA becnhtop. It supports APC and ACC two working modes can be switched. In APC mode, the output power can be adjusted. In ACC mode, the working current can be adjusted. Let’s check it now.
It’s a high power polarization maintaining ytterbium-doped optical amplifier. Civil Laser’s 10W high power YDFA include a ‘Monitor’ fiber. The software control function can be customized, and the default is button control. The working current or output power can be adjusted by the button.
YDFA’s test report.
30dBm EDFA Single-mode Fiber Laser Module
This is a C-Band 30dBm module type EDFA. It is equipped with SMF-28e single-mode fiber, and polarization-maintaining fiber can also be customized. This is a high-power EDFA, with a row of aluminum sheets on one side of the shell for easy heat dissipation. This is a modular design, and desktop EDFA can also be customized. Let’s check it now.
High power erbium doped fiber amplifier (EYDFA-HP-BA),based on amplification technology of double clad erbium doped fiber, unique optical packaging technology, and with reliable hardware light path protection design, realized high power laser output in C band or L band, It has the advantages of high gain and low noise, and can be widely used in CATV, optical fiber communication, laser radar, etc..
The test report & spectrum analysis chart of C-Band 30dBm SM EDFA.
The relationship between power current and output power.


































































