dBm Optics introduces Polarization Dependent Center Wavelength and Bandwidth measurement options

dBm Optics Inc. recently announced the availability of the new PDCW (Polarization Dependent Center Wavelength) and PDBW (Polarization Dependent Bandwidth) measurement option for its Component Spectrum Analyzer system.

The new option enables PDCW and PDBW measurements to be made within a few seconds--and to be made simultaneously with insertion loss and Polarization Dependent Loss (PDL) measurements. dBm Optics claims to be the first company to offer a system with these capabilities.

The dBm Optics model OMU-953 automatically determines insertion loss, PDL, PDCW, and PDBW over the full C- and L-bands in less than eight seconds. In addition, many errors that have previously made PDCW and PDBW measurements troublesome have been eliminated by a new proprietary algorithm, say company representatives. Accuracy of wavelength is less than 1.8 pm, due to the built-in Dynamic Wavelength Meter. The Component Spectrum Analyzer also supports the slower Swept All-States method (which can provide additional critical information on the mapping and correlation between PDCW, PDBW, and the insertion loss at center wavelength).

PDCW and PDBW are critical parameters for passive optical components (especially for planar and free-space devices, which can have relatively large values of PDBW and PDCW). The dBm Optics system will assist suppliers in developing methods for mitigating these effects by providing accurate and repeatable measurements for both characterization and test.