NakuLaser Blog

 In the vast field of optical communication, L-band erbium-doped fiber amplifiers are playing an increasingly crucial role. The L-band, following the C-band, is a valuable spectrum resource that has been extensively explored in dense wavelength division multiplexing (DWDM) systems. The L-band erbium-doped fiber amplifier, based on erbium-doped fiber amplifier (EDFA) technology, is a core device specifically designed for efficient amplification of signals in this band, providing powerful support for long-distance, high-capacity optical communication systems. 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 th...

 The one in the video is a benchtop 40dBm erbium-doped fiber amplifier. The input and output fibers of the PM amplifier are polarization maintaining fiber PM1550 and the connector keys are aligned the slow axis. This EDFA is designed to amplify optical signals up to 10W average power for high power applications at 1550nm wavelength range. The operating current or output power can be adjusted by pressing the button. You can choose the software control function and use the RS232 interface to connect to the software. The two working modes of ACC and APC can be switched. In APC mode, the output power can be adjusted. In ACC mode, the operating current can be adjusted. The high-power polarization-maintaining erbium-doped fiber amplifier is based on the polarization-maintaining double-clad erbium-doped fiber amplification technology. It adopts a unique fiber packaging process and a reliable high-power laser protection design to achieve high-power laser polarization-maintaining output i...

 The 1550nm band single-wavelength laser (low power) adopts high-stability semiconductor laser chip , polarization maintaining  fiber output, professionally designed drive and temperature control circuit control to ensure the safe and stable operation of the laser, and can provide desktop or modular packaging. In the video below is a benchtop 1550nm 50mW 1MHz narrow linewidth laser. Let's check it now. The output power can be adjusted, and the adjustment accuracy is 0.1mW. It is a narrow linewidth laser with a spectral broadband <1MHz, kHZ level narrow linewidth lasers 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, control switches, and adjust the power. PM1550 polarization maintaining fiber is installed, and SM single-mode fiber can also be customized. The test report of 1550nm 50mW 1MHz Narrow Line-width PM fiber laser.

 Today, what we bring is a high-power modular erbium-doped fiber amplifier . Let's check it now. The one in the video is a C-band 37dBm EDFA with polarization maintaining fiber.  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 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. The test report of 37dBm EDFA.

  808nm fiber-coupled laser uses PM fiber coupling , which has the advantages of high coupling efficiency and good output laser beam quality. The TEC temperature control system is used to ensure that the laser is more stable and has better performance. Compact structure, strong and reliable, suitable for various industrial and scientific research applications. This is 808nm 100mW infrared laser system coupled polarization-maintaining fiber . The working voltage is AC 90~240V and supports wide range voltage. Its laser power can be adjusted from 0~100mW, and it supports two working modes of CW/Modulation. 808nm is infrared laser, invisible laser, here use infrared sensitive film to observe the spot. The test report of 808nm 100mW IR PM fiber coupled laser system.

 Ytterbium-doped fiber amplifier (YDFA) generates gain by pumping ytterbium-doped fiber with semiconductor laser , which is used to amplify laser signals in the 1030~1100nm band, Hi1060 single-mode fiber output, the output power is continuously adjustable, with high gain and low The advantage of 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. What we are going to talk about today is 37dBm 5W single-mode YDFA and 40dBm 10W PM YDFA. First up is 5W SM YDFA. This fiber amplifier built-in 3 cooling fans.  The test report of YDFA-37-SM. The following is 40dBm PM YDFA. It's a high power polarization maintaining ytterbium-doped optical amplifier. Civil Laser's high power...

1310nm single-wavelength laser light source uses DFB s emiconductor laser chip, polarization-maintaining fiber output, professionally designed drive circuit and TEC control to ensure the safe and stable operation of the laser. It is a 1310nm 20mW infrared laser coupled optical fiber. The fiber is PM1310 polarization-maintaining fiber, and SMF-28e single-mode fiber can also be customized. In addition, the single-mode fiber coupling interface is a consumable part, we make it into a fixed state and cannot be plugged or unplugged. The power of the laser output can be adjusted by the button, and the adjustment accuracy is 0.1mW. The back of the laser has an RS232 interface, and software control mode can be added. The test data for a 1310nm laser. The spectra of the 1310nm laser at 1mW and 20mW respectively.

 It's a 638nm fiber coupled laser system. The coupling is a polarization maintaining fiber, the fiber length is 10 meters. The output power is adjusted from 1~80mW. And the output power and fiber can be customized. Let's check it now. The TEC temperature control system is used to ensure that the laser is more stable and has better performance. Compact structure, strong and reliable, suitable for various industrial and scientific research applications. The test datasheet of this 638nm 80mW PM fiber coupled laser system .