Abstract Details
| Name: Srinath Patti Affiliation: IIA, Bengaluru Conference ID: ASI2019_335 Title : Hybrid Optical Correlator for Gravitational wave signal detection Authors and Co-Authors : Srinath Patti(IIA), Sendhil Raja(RRCAT), R. Sridharan(IIA), Mayank Chaturvedi(RRCAT) and P. Sreekumar(IIA). Abstract Type : Poster Abstract Category : Instrumentation and Techniques Abstract : In order to enable Multi-messenger astronomy, detection of the Gravitational wave (GW) has to be processed in nearly real time i.e., rapid identification of GW candidate events to trigger immediate Electromagnetic (EM) wave observations. The detection of gravitational wave signatures in the strain data of LIGO Detectors is done using computational techniques such as matched filter using template banks. LIGO Data computing system uses several processors for parallel computing. A novel way is to use Optical correlators that provide inherent parallelism, which is suitable for above problem, and also by using volume holographic technique thousands of templates can be multiplexed in a single hologram. In this method we use optical matched filters to detect, using electro-optic techniques, the signature of gravitational wave in the interferometer strain data. The strain data is loaded into the spatial light modulator (SLM) which acts as an input to the optical correlator. The design consists of an electro-optic matched filter detector using SLMs and the templates are stored as multiplexed holograms. A matched signal leads to a peak in the corresponding output angle which is detected using a photodiode. In this poster, I will present a model of Optical Correlator. |