The UPK-30S105-L model integrating sphere feature a unique stretched design specially made for the measurement of side emitting fibers up to 80mm long. Elongation of the ODM98 coated sphere from 30mm diameter to a length of 105mm eliminates the need for a large diameter sphere. Its unique collar baffle design avoids direct illumination of the detector by the side emitting fiber. The detector port provides an interface for direct mounting of Gigahertz-Optik’s PD-11, TD-11 and VL-11 type light detectors and UFC-11 type fiber connectors. The recommended useful wavelength range of the stretched integrating sphere is from 250nm to 2500nm. Gigahertz-Optik’s calibration laboratory offers traceable spectral radiant power sensitivity calibration in the wavelength range from 250nm to 1800nm.