Optical Spectrum Analyzer Demonstration by Agilent Technologies - 6th August 2008



Mr Mombasawala Mohmed Saeed, a technical expert from Agilent Technologies gave a demonstration to the students at Tifac Core at the Delhi College of Engineering. The workshop by him included various hands on demonstrations including calibration of the DWDM Setup in the Laboratory.
A zone plate is a device used to focus light. Unlike lenses however, zone plates use diffraction instead of refraction. Created by Augustin-Jean Fresnel, they are sometimes called Fresnel zone plates in his honor. The zone plate's focusing ability is an extension of the Arago spot phenomenon caused by diffraction from an opaque disc.