[20a-A308-1~6] CS.2 Code-sharing Session of 3.2 & 4.4

10:45 AM - 11:00 AM JST(1:45 AM - 2:00 AM UTC)English Presentation

[20a-A308-5] Processing RF signals using low-power Brillouin nonlinearities

Reena Parihar¹, Piyush Raj¹, K Girish², 〇Amol Choudhary¹ (1.IIT Delhi, 2.NIT Trichy)

Keywords:

Brillouin scattering,Microwave Photonics,RF filters

In this paper, we have demonstrated a technique that primarily harnesses the phase response of stimulated Brillouin scattering thus requiring only ~20mW of optical power to achieve RF bandpass filters with reconfigurable bandwidth from 30MHz-700 MHz, selectivity >20dB, and frequency tuning >20GHz. The filter passband possesses a flat phase response resulting in a zero group delay in the passband. Furthermore, no additional noise is added to the signal in the passband highlighting a major advance compared to traditional Brillouin-based RF devices. Finally, switching from bandpass to bandstop filters is also achieved with suppression of >15dB and bandwidths of >1GHz.