Laser Attenuators 48AT are used for reproducible and precise reduction of the power output by the laser. The collimated laser beam is constricted by a precision ball transported by a scaled micrometer screw. The sub sequent single-mode fiber coupling is used as a mode filter.
This mechanically stable attenuation method allows the precise and reproducible setting of the laser power output over a wide range (typically 1.5 to > 60 dB). Unlike a power regulation by modulation of the laser current, the wavelength and polarization status of the laser beam are preserved.
- Reproducible power attenuation and safety constraints are only assured for singlemode fibers that have a Gaussian intensity profile
- Fiber collimator and laser beam coupler with inclined or coaxial coupling axis for single-mode fibers with FC-APC or FC-PC connector
- Insertion loss typically 1.5 dB, extinction > 60 dB
- Can be used as interface between different types of fiber or connector