1530nm Pigtailed DFB Laser Diode With PM Fiber Manufacturers

Welcome to our booth: xiamen optical Exhibition China 2023, XMIPE Box Optronics

Semiconductor laser has the advantages of small size, light weight, high electro-optical conversion efficiency, high reliability and long life. It has important applications in the fields of industrial processing, biomedicine and national defense.

Fiber polarization controllers create stress birefringence by wrapping the fiber around two or three circular disks, thereby forming independent waveplates that change the polarization state of light propagating in a single-mode fiber.

Randomly distributed feedback fiber laser based on Raman gain, its output spectrum has been confirmed to be wide and stable under different environmental conditions, and the lasing spectrum position and bandwidth of the half-open cavity DFB-RFL is the same as the added point feedback device The spectra are highly correlated. If the spectral characteristics of the point mirror (such as FBG) change with the external environment, the lasing spectrum of the fiber random laser will also change. Based on this principle, fiber random lasers can be used to realize ultra-long-distance point-sensing functions.

In various optical fiber interference instruments, in order to obtain the maximum coherence efficiency, the polarization state of the optical fiber propagating light is required to be very stable. The transmission of light in a single-mode fiber is actually two orthogonal polarization fundamental modes. When the optical fiber is an ideal optical fiber, the transmitted fundamental mode is two orthogonal double degenerate states, and the actual optical fiber is drawn due to There will be unavoidable defects, which will destroy the double degenerate state and cause the polarization state of the transmitted light to change, and this effect will become more and more obvious as the length of the fiber grows. At this time, the best way is to use Polarization maintaining fiber.