RTD's mimic neuronal phenomena

posted Oct 14, 2009, 11:16 PM by Rui Guerra   [ updated Sep 1, 2014, 4:52 PM ]

The ability to produce narrow optical pulses has been extensively investigated in laser systems with promising applications in photonics such as clock recovery, pulse reshaping, and recently in photonics artificial neural networks using spiking signal processing. The Electronics and Optoelectronics group investigated a neuromorphic opto-electronic integrated circuit (NOEIC) comprising a semiconductor laser driven by a resonant tunneling diode (RTD) photo-detector operating at telecommunication (1550 nm) wavelengths capable of excitable spiking signal generation in response to optical and electrical control signals. The RTD-NOEIC mimics biologically inspired neuronal phenomena and possesses high-speed response and potential for monolithic integration for optical signal processing applications. The work has been published in the SPIE Proceedings 
series (link) and on Optical and Quantum Electronics (link).