Table Tunable Laser Light Source Built-In VOA Optional C/L/CL/O

he working principle of tunable lasers is mainly based on three ways to achieve laser wavelength tuning:

Cavity tuning: Most tunable lasers use a working substance with wide fluorescent lines. The resonators that make up the laser have very low losses only over a very narrow wavelength range. Therefore, the wavelength of the laser can be changed by changing the wavelength corresponding to the low loss region of the resonator by some elements (such as a grating). Typical representatives of this method include dye lasers, chrysoberyl lasers and so on.

External parameter tuning: By changing some external parameters (such as magnetic field, temperature, etc.), the energy level of the laser transition moves, so as to achieve wavelength tuning. The principle of this method is that changes in external parameters will affect the energy level structure of the atoms inside the laser, and then change the emission wavelength of the laser.

Nonlinear effect tuning: Using nonlinear effects to achieve wavelength conversion and tuning. It involves nonlinear optics, stimulated Raman scattering, optical frequency doubling and optical parametric oscillation. By precisely controlling these nonlinear effects, continuous tuning of laser wavelengths can be achieved.

Specification

Benchtop tunable laser sources have a wide range of applications in a number of areas, including but not limited to:

DWDM/AWG/PLC and ATM systems: In dense wavelength division multiplexing (DWDM) systems, tunable laser sources are used to test light signals at different wavelengths.

Optical fiber sensor test: Optical fiber sensor is a sensor that uses optical fiber as a transmission medium. Tunable laser sources can be used to test the performance and response characteristics of fiber optic sensors.

PMD and PDL measurement: PMD (polarization mode dispersion) and PDL (polarization dependent loss) are important parameters in optical fiber communication systems. Tunable laser sources can be used to measure these parameters to evaluate the performance of fiber optic systems.

Optical Coherence Tomography (OCT) : OCT is a technique for imaging using the principle of light wave interference. Tunable laser sources provide OCT systems with different wavelengths of light for more accurate imaging.