Nanosecond laser Manufacturers

Fiber optic gyroscope is the fiber angular velocity sensor, which is the most promising one among various fiber optic sensors. The fiber optic gyroscope, like the ring laser gyroscope, has the advantages of no mechanical moving parts, no warm-up time, insensitive acceleration, wide dynamic range, digital output, and small size. In addition, the fiber optic gyroscope also overcomes the fatal shortcomings of ring laser gyroscopes such as high cost and blocking phenomenon. Therefore, fiber optic gyroscopes are valued by many countries. Low-precision civilian fiber optic gyroscopes have been produced in small batches in Western Europe. It is estimated that in 1994, the sales of fiber optic gyroscopes in the American gyroscope market will reach 49%, and the cable gyroscope will take the second place (accounting for 35% of sales).

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.

Fiber Bragg gratings are optical components with a periodic structure that separate light into beams that propagate in predictable directions based on wavelength. Gratings serve as the core dispersive element of many modern spectroscopic instruments. They provide the critical function of selecting the wavelength of light required to perform the analysis at hand. Selecting the best grating for an application is not difficult, but it usually requires a degree of decision making when prioritizing the key parameters of the application.

Stimulated Brillouin Scattering is the parametric interaction between pump light, Stokes waves and acoustic waves. It can be regarded as the annihilation of a pump photon, producing a Stokes photon and an acoustic phonon simultaneously.