According to the July/August 2010 Lightwave magazine article “Testing PON devices with multiple kilometers of optical fiber,” the use of burst-mode data CDRs (BCDRs) in the latest generation of PON systems opens the door to testing these systems over longer fiber distances -- provided you have the right BERT. You can now use the BCDR together with a BERT that provides two synchronous differential pattern generators and a differential error detector, writes Joe Evangelista of Agilent Technologies…
