If the photograph is clicked, it grows.

Function IL, PDL, Coupler Test, PDL&Loss ,RL ,PowerMeter Insertion Loss (IL) the power loss of passive optical components. Polarization Dependent Loss (PDL) maximal power fluctuation caused by the DUT’s sensitivity to changes in polarization. Coupler Test Coupling Ratio (CR), Splitting Ratio (SR), Insertion Loss (IL), Excess Loss (EL), and Directivity (DIR) of optical couplers. Polarization Dependent Coupler Test Polarization Dependent Coupling Ratio (PDCR), Splitting Ratio (PDSR), Loss (PDL), and Excess Loss (PDEL) of optical couplers. PDL / Insertion Loss Polarization Dependent Loss (PDL) and the averaged Insertion Loss (IL avg) simultaneously Return Loss (RL) fraction of power which is scattered back to the source by a component. Powermeter absolute or relative power of one or two light sources in dBm or Watts. Internal LD FP-LaserInGaAsP 1550+-20nm -8dBm GP-IB AC100-240V 100VA 50/60Hz 42.6 × 8.9 × 44.5cm 9Kg No optical sensor Need Sensor 81521B /001