High Power 1W EDFA Amplifier Module Manufacturers

The fiber optic current sensor is a smart grid device whose principle uses the Faraday effect of magneto-optical crystals.

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.

Fiber amplifier in a fiber optic data link, the amplification process that occurs over a very long transmission fiber.

Since Maman first obtained laser pulse output in 1960, the process of human compression of laser pulse width can be roughly divided into three stages: Q-switching technology stage, mode-locking technology stage, and chirped pulse amplification technology stage. Chirped pulse amplification (CPA) is a new technology developed to overcome the self-focusing effect generated by solid-state laser materials during femtosecond laser amplification. It first provides ultra-short pulses generated by mode-locked lasers. "Positive chirp", expand the pulse width to picoseconds or even nanoseconds for amplification, and then use the chirp compensation (negative chirp) method to compress the pulse width after obtaining sufficient energy amplification. The development of femtosecond lasers is of great significance.

The semiconductor laser amplifier is small in size, wide in frequency band, and high in gain, but the biggest weakness is that the coupling loss with the optical fiber is too large, and it is easily affected by the ambient temperature, so its stability is poor. Semiconductor optical amplifiers are easy to integrate and are suitable for use in combination with optical integration and optoelectronic integrated circuits.

Single-mode fiber-coupled laser diode Package type: There are two commonly used packages for this type of semiconductor laser tube, a "butterfly" package, which integrates a TEC temperature-controlled cooler and a thermistor. Single-mode fiber-coupled semiconductor laser tubes can usually reach an output power of several hundred mW to 1.5 W. One type is a "coaxial" package, which is commonly used in laser tubes that do not require TEC temperature control. Coaxial packages also have TEC.