Abstract Details
| Name: Jameer Manur Affiliation: IUCAA Conference ID: ASI2018_1219 Title : Faraday Rotation Authors and Co-Authors : Prof. Joydeep Bagchi IUCAA, Pune Abstract Type : Poster Abstract Category : Instrumentation and Techniques Abstract : In physics the polarization of light is studied through â€Faraday Rotation Effect†using optical materials like glass, crystals, chemicals etc in the presence of strong magnetic field. The state of polarization is changed in proportion to the magnetic filed strength. The study of polarization of light through rotation of plane of polarized wave when travelling through crystals placed inside solenoid, subjected to a strong axial magnetic field can be a novel approach in communication. Experiment involves conversion of polarization modulated light into intensity-modulated light, and phase shifted demodulated wave with respect to input modulating signal. Insertion of properly matched and tuned circuit before coil and amplifier after demodulation leads to better reception of signal. The baseband signal is an audio signal which is superimposed on the optical carrier. The modulating signal is fed to the solenoid where the audio signal gets modulated in the presence of Faraday material and demodulated by converting polarization modulation into intensity modulation at the photo detector. The power requirement is very low as compare to the existing analog modulation techniques. The system is successfully working over the audio bandwidth. |