A tunable fiber laser is a fiber laser device capable of continuously adjusting the output laser wavelength. Wavelength tuning is achieved by changing internal structural parameters or through external control. It is widely used in scientific research, industry, medicine, and other fields.
1. Basic Operating Principle: The core operating principle of a tunable fiber laser is to continuously adjust the output laser wavelength by changing internal structural parameters or through external control. This typically covers a wide wavelength range from the near-ultraviolet to the near-infrared. The laser generation process is as follows: pump light enters the doped fiber and is absorbed by rare earth ions. The excited ions generate laser light through radiative transitions, oscillating within the resonant cavity and ultimately outputting the laser light.
2. Tuning Methods: Tuning methods include external cavity feedback technology, current control technology, and nonlinear effects.
Box Optronics offers C/L-band wavelength-tunable fiber lasers.
These achieve continuous laser output with up to 96 wavelengths (ITU-T standard wavelengths, 50 GHz spacing); in the L-band, they achieve up to 128 wavelengths (ITU-T standard wavelengths, 50 GHz spacing). Integrating a tunable filter and high-gain chip, they feature high output power, narrow linewidth, and precise wavelength accuracy. Equipped with dedicated driver control circuitry, a high-definition color LCD, and optional host computer software, these lasers enable precise wavelength tuning. They are suitable for DWDM system development, fiber lasers, fiber links, and optical testing.