1270nm do 1610nm ali 1550nm Fiber Bragg Grating FBGs so neke vrste uklonske rešetke, ki nastanejo s periodičnim spreminjanjem lomnega količnika jedra vlakna z določeno metodo. Gre za pasivno filtrirno napravo. Rešetkasta vlakna se pogosto uporabljajo na področju komunikacije z optičnimi vlakni, zaznavanja optičnih vlaken in obdelave signalov iz optičnih vlaken zaradi svoje majhnosti, majhne izgube pri fuziji, popolne združljivosti z optičnimi vlakni in vgrajenimi inteligentnimi materiali ter njihove resonančne valovne dolžine, ki je občutljiva na spremembe. temperature, napetosti, lomnega količnika, koncentracije in drugega zunanjega okolja.
Fiber Grating Hygrometer Sensor vlage je pakiran s kovinsko cevjo iz nerjavečega jekla, njegova občutljivost na vlažnost pa se uporablja za spremljanje vlažnosti. Senzor je intrinzično varen, brez elektromagnetnih motenj za testiranje temperature in vlažnosti.
A Phase Shifted FBG Fiber Bragg Grating introduces phase discontinuities into a fiber grating, creating a narrow transmission window in the FBG's reflection spectrum. The transmission wavelength varies with the amount of phase shift. Phase-shifted FBGs can be used as demultiplexers in dense wavelength division multiplexing (DWDM) systems. The magnitude, location, and point of the phase shift have a significant impact on the performance of the demultiplexer.
The wavelength of a pump laser diode varies at different operating temperatures. The 980nm pump FBG Fiber Bragg grating wavelength lock is used to stabilize the wavelength and intensity of the optically amplified pump laser. By precisely locking the pump laser diode through feedback of a small portion of the laser signal, this type of control significantly improves the power and wavelength output accuracy and reliability of the pump laser. Specifically, it eliminates spectral mode jumps in the pump laser, reduces power intensity fluctuations caused by temperature and pump drive current variations, and greatly improves the performance of the pump laser. It is also commonly used for stabilizing distributed feedback lasers in wavelength division multiplexing systems, the optical path of tunable lasers, and fiber resonators in Raman systems. Depending on the customer's locking requirements for the pump laser, single-grating or dual-grating configurations are available. The dual-grating configuration further improves the output spectral characteristics of uncooled pump lasers.
Avtorska pravica @ 2020 Shenzhen Box Optronics Technology Co., Ltd. - Kitajska, moduli z optičnimi vlakni, proizvajalci laserjev s sklopi vlaken, dobavitelji laserskih komponent Vse pravice pridržane.
