Pulse delay via tunable white light cavities using fiber optic resonators

TL;DR

This paper proposes a fiber optic white light cavity system using stimulated Brillouin scattering to achieve tunable data delay, enabling larger delays than conventional buffers for telecommunication applications.

Contribution

It introduces a fiber optic implementation of white light cavities with tunable delay using stimulated Brillouin scattering, enhancing data buffering capabilities.

Findings

Delay time is independently controllable from pulse bandwidth.

System bandwidth can be several times the Brillouin frequency shift.

Achieves larger net delays than conventional recirculating loop buffers.

Abstract

Previously, we proposed a data buffering system that makes use of a pair of white light cavities. For application to telecommunication systems, it would be convenient to realize such a device using fiber optic resonators. In this paper, we present the design of such a system, where the white light cavity effect is produced by using stimulated Brillouin scattering. The system consists of a pair of fiber optic white light cavities placed in series. As in the original proposal, the delay time can be controlled independently of the bandwidth of the data pulses. Furthermore, we show how the bandwidth of the system can be made as large as several times the Brillouin frequency shift. We also show that the net delay achievable in such a buffer can be significantly larger than what can be achieved using a conventional recirculating loop buffer.