fiber optcial circulator Manufacturers

Compared with traditional technologies, the advantages of fiber lasers in beam quality, depth of focus and dynamic parameter adjustment performance have been fully recognized. Coupled with the advantages of electro-optical conversion efficiency, process versatility, reliability and cost, the application level of fiber lasers in medical device manufacturing (especially in fine cutting and micro welding) has been continuously improved.

Semiconductor saturable absorber mirror (SESAM) is the core device for mode-locking to generate ultrashort pulses, especially picosecond pulses. This is a nonlinear light absorption structure that combines a mirror structure and a saturable absorber. Relatively weak pulses can be suppressed, and the pulses can be attenuated in a way that reduces their duration. At present, with the development of microfabrication industry at home and abroad, the demand for ultrashort pulses, especially picosecond pulsed lasers, is increasing, and the demand for SESAM is also increasing.

The full name of VCESL is a vertical cavity surface emitting laser, which is a semiconductor laser structure in which an optical resonant cavity is formed in the direction perpendicular to the semiconductor epitaxial wafer and the laser beam emitted is perpendicular to the surface of the substrate. Compared with LEDs and edge-emitting lasers EEL, VCSELs are superior in terms of accuracy, miniaturization, low power consumption, and reliability.

Wavelength division multiplexing refers to a technology in which signals of different wavelengths are transmitted together and separated again. At most, it is used in optical fiber communication to transmit data in multiple channels with slightly different wavelengths. Using this method can greatly improve the transmission capacity of the optical fiber link, and the use efficiency can be improved by combining active devices such as optical fiber amplifiers. In addition to applications in telecommunications, wavelength division multiplexing can also be applied to the case where a single fiber controls multiple fiber optic sensors.