Pulsed EDFA Manufacturers

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.

Lithography is a technique for transferring a designed pattern directly or through an intermediate medium onto a flat surface, excluding areas of the surface that do not require a pattern.

Time-domain OCT is mainly composed of Michelson interferometers. The light emitted by the light source is divided into two beams after passing through the coupler, and enters the sample arm and the reference arm of the Michelson interferometer respectively.