Tag Archives: fiber output

Unlocking High-speed Transmission: In-depth Analysis of 40dBm Single-mode YDFA Technology

Ytterbium-doped fiber amplifier (YDFA) generates gain by pumping ytterbium-doped fiber with semiconductor laser and is used to amplify optical signals in the 1030~1080nm band. 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 panel buttons. A more compact modular YDFA is also provided to facilitate user system integration.

With the rapid development of optical communication technology, how to effectively enhance the intensity of optical signals and extend the transmission distance has become the focus of the industry. As an important technological innovation in this field, the ytterbium-doped fiber amplifier is gradually becoming a key device in the construction of optical communication networks with its excellent performance and broad application prospects.

The 40dBm ytterbium-doped fiber amplifier uses advanced ytterbium-doped fiber as the gain medium. Ytterbium is widely used in fiber amplifiers due to its unique energy level structure and efficient energy conversion characteristics. When pump light (usually high-power laser) is injected into ytterbium-doped fiber, ytterbium atoms absorb the energy of the pump light and undergo energy level transitions. Subsequently, when the optical signal passes through the fiber, the ytterbium atoms are stimulated to radiate photons of the same frequency as the signal light, thereby amplifying the optical signal.

It is a 1030~1070nm Ytterbium-doped fiber amplifier. The saturated output power is 40dBm @0dBm input. The 40dBm YDFA is a high-power amplifier, with an additional Monitor interface. The Monitor is used to monitor or synchronize signals with low power. And it has built-in cooling fan. Configured with RS2323 interface, available software or control command YDFA.

It supports two working modes of APC/ACC, and the two working modes can be switched by pressing the button. In APC working mode, the output power can be set. In ACC working mode, the working current can be set. Finally, press the middle square button to confirm.

The use of single-mode optical fiber as the transmission medium ensures high-quality transmission of optical signals. Single-mode optical fiber has small intermodal dispersion and is suitable for long-distance, high-speed optical communication applications.

The test data of YDFA-40-SM-B.

The 40dBm ytterbium-doped fiber amplifier has shown strong competitiveness and broad market space in the field of optical communication with its excellent performance and wide application prospects. With the continuous advancement of technology and the continuous growth of application demand, it is believed that this technology will play a more important role in the future and promote the rapid development of the optical communication industry.

Newest! 760nm Laser + Power Supply Integrated Fiber Laser

What we brought this time was the 760 1500mW all-in-one fiber laser.  The laser power supply and laser output part are integrated in one chassis. There is a PC/M button on the back of the laser, the default is ‘M’ mode, that is, manual mode. ‘PC’ mode is software control mode, users can add this function. The Modulation interface on the back is used to connect 0~10KHz modulation signal. When there is no signal input, it is CW continuous working mode. Let’s check it now.

The 760nm 1500mW fiber laser integrated machine is a laser device that integrates high power, high precision and high stability. It uses a 760nm wavelength laser light source with a maximum output power of up to 1500mW, which can meet the needs of various high-precision and high-demand industrial applications.



The test data of this 760nm fiber coupled laser.


Laser output power stability diagram.


Graph of laser power and operating current in M-mode.


Output power under software, in PC mode.

The laser Spectral diagram.



Innovative Progress of 10kW Pulsed Nanosecond Fiber Laser in 1550nm Band

1550nm nanosecond pulse laser system. This high-power nanosecond laser is equipped with 2 fibers. The Ouput fiber below is the normal laser output fiber. The Monitor fiber above is a signal synchronization fiber, used for synchronizing optical signals, with a peak power of about 10mW. The signal can be built-in or external input. The yellow interface here is the signal input interface. This laser uses an external signal. You can only control the current through the button, but not the signal frequency. Let’s check it now.

The pulse width is adjustable from 3 to 200 ns, and the repetition frequency is adjustable from 1 to 3000 kHz.

The laser can be controlled via buttons. It can also be controlled through software, via RS232-USB and PC software link.


The  is a shining star in modern industrial technology. Its high power output and precise nanosecond pulse control make it an ideal choice for material processing, scientific research experiments and other fields. With its unique fiber structure, this laser achieves high efficiency, long life and stability, bringing revolutionary changes to industrial production. In the future, it will continue to lead the new trend of laser technology and contribute to scientific and technological progress and industrial development.

The test data of 1550nm nanosecond high-power laser.




1550nm 3kHz Linewidth PM Fiber Laser Source Benchtop

Single frequency narrow linewidth fiber laser adopts rare earth doped fiber DFB laser cavity structure, output single longitudinal mode laser with wavelength of 1550nm, spectral linewidth is less than 3kHz, output spectral side mode suppression ratio exceeds 60dB.

What we demonstrate in the video is a 1550nm 200mW narrow linewidth fiber laser with a linewidth of 2.64kHz. The output optical fiber is available in SM/PM, here is the PM optical fiber. And it is fixed on the laser and is not pluggable. The optical fiber interface and length can be customized.

The laser output power can be adjusted through the button, the adjustment range is 10%~100%, and the adjustment accuracy is 1mW. The working Temperature can be fine-tuned, which can affect the laser wavelength. The adjustment accuracy is 0.01℃. The laser can also be controlled through software, and the interface on the laser is RS2023.

Parameter table of 1550nm narrow Linewidth Laser.






1550nm 37dBm 5W High Power SM Fiber Coupled Laser

What our laboratory demonstrates today is a 1550nm 37dBm IR laser coupled singlemode optical fiber output. The output power is adjustable with an adjustment range of 0.5~5W. The adjustment accuracy is 1mW. The Line-width here is 3.7 MHz, and the line width of 1MHz can be customized. The laser can be controlled through the buttons on the panel to adjust the laser output power. 1550nm is infrared invisible light, and the light spot can be observed with an infrared sensor plate. Let’s check it now.

This laser adopts DFB type laser chip, and cooperates with high-power gain optical path module to realize single-mode fiber output of single-wavelength high-power laser. The professionally designed drive and temperature control circuit control ensures the safe and stable operation of the laser, and the spectrum and power remain stable for a long time. The modular package has a compact structure, which is convenient for user system integration and is more suitable for engineering applications.

What is configured here is single-mode fiber, and polarization-maintaining fiber can be customized. The laser can also be controlled through software, and the communication interface is RS232. The following is the interface for the control software.

The power switch is on the back of the laser.The LCD panel displays the laser output power. Turn the key to ON, the laser is activated, and the Active indicator lights up.
Use the left and right buttons to select the number position to be adjusted (units, tens, hundreds, thousands). The up and down buttons adjust the value. The middle button is the confirmation key.

These are laser test reports, including the main parameters of the laser, spectrum diagram, power stability test, and line width test results.





940nm 30W Software Control IR Fiber Laser Module

It is a 940nm IR fiber couled laser module. Its output power is up to 30W and it has two built-in cooling fans. The one shown in our laboratory today can be controlled by software. It means that we can control the output power on the computer.

High-power laser light source is based on high-performance semiconductor laser chip, 105/125μm fiber coupling output. The professionally designed constant current drive and temperature control circuit ensure the safe and stable operation of the laser. Ideal for medical research, fiber laser pumping, and other production testing.

The following are several sets of data we tested today:

Set the working current to 500mA, the laser output power to 194mW, and the laser spot can be seen on the infrared observation card.
The current is set to 2000mA and the laser power is close to 5W. When the laser shines on the sponge, white smoke will emit directly.
The current is set to 6000mA and the laser power exceeds 15W. When the laser shines on the cardboard, it can ignite quickly.

The interface to the control software.


The parameter table and spectral diagram of 940nm laser.



The relationship between operating current and output laser.


Warm reminder: Although this is an infrared laser, it has very high power. You must wear infrared laser protective glasses when operating it.

40W 637nm Powerful Fiber Laser System Operation Video

This is a 637nm 40W powerful lab fiber coupled laser system. The laser module includes a radiator. The laser power supply has a current display and the ‘Adjustor’ knob can adjust the laser output. The three working modes of CW/TTL/Analog can be switched on the back of the power supply.



When no optical fiber is installed, the light spots are scattered. The optical fiber used here is 600μm, SMA905 interface. The high power red laser beam from the fiber port. Let’s check it now.

405nm Blue-viole Laser Coupled SM Fiber Output

This is a 405nm 80mW single mode fiber laser desktop type. The real-time power is displayed on the LCD screen, and the power can be adjusted by the button on the left.

It can also be customized into modules and controlled by software. Desktop reserved RS232 interface, software control function can be added. This laser quipped with single-mode fiber, PM fiber can also be customized. The fiber output interface is FC/APC by default, and can also be customized with SMA, FC/PC and other models.

The test data sheet of 405nm 80mW laser.



Adjust the laser output power via the button:

Use the left and right buttons to select the value position to be adjusted.
The upper and down buttons adjust the value.
The middle square button determines the adjustment setting.


488nm Single-mode Fiber Laser System Module Type

Today we bring a 488nm single-mode fiber laser module.  This laser adopts semiconductor laser chip, and the professionally designed drive and temperature control circuit temperature control ensures the safe operation of the laser, stable output power and spectrum, and excellent spot quality (TEM00 mode).


This is a modular structure, and the desktop model can also be customized. The laser output power can be adjusted, and the adjustment range is 10% ~ 100%. The laser can be controlled by software, connected to the computer via RS232-USB.


The fiber here is single-mode, and polarization-maintaining fiber can also be customized.

Datasheet of actual measurements of the laser.


The spectrum diagram and power stability test diagram of the laser.





1550nm 1MHz Spectral Linewidth Laser PM1550 Fiber Output

The 1550nm band single-wavelength laser (low power) adopts high-stability semiconductor laser chip, single-mode or polarization maintaining fiber output, professionally designed drive and temperature control circuit control to ensure the safe and stable operation of the laser.

It is  a 1550nm 20mW fiber laser source benchtop. PM1550 polarization maintaining fiber is installed, and SM single-mode fiber can also be customized. The output power can be adjusted, and the adjustment accuracy is 0.1mW. This is a narrow linewidth laser with a spectral bandwidth of less than 1MHz. Narrow linewidth lasers at the kHz level can also be customized.
Software control function can be customized,using RS232 communication serial port. Default only supports button control. The standard version is controlled by buttons to control the switch and adjust the power.


The test report for this fiber laser.