1550nm DFB Fiber Coupled Butterfly Laser Diode Manufacturers

Optical fiber modules are components used to connect optical fiber cables to electronic devices. Optical fiber modules have many different parts, and different modules are designed to different specifications. Each part of the module is connected to a board that can be installed as a unit of electronic equipment.

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.

Laser welding technology is a fusion welding technology that uses a laser beam as an energy source to make it impinge on the weldment joint to achieve the purpose of welding.