Dual-channel all-optical wavelength conversion switching by four-wave mixing

Abstract

We report an experimental demonstration of dual-channel all-optical wavelength conversion switching in hot Rb vapor. In a four-level atomic system, a coupling field and a pump field interact with both (87)Rb and (85)Rb isotopes simultaneously and facilitate the generation of two nonlinear signals when the probe field is applied to the corresponding transition. Each nonlinear signal is switched on and off separately by the pump field at different frequencies based on four-wave mixing and isotope shifts.

Multi-pathway all-optical wavelength conversion switching and routing via four- and six-wave mixing in hot rubidium vapour

“…However, so far most all-optical switching proposals are implemented as turning on or off one light beam by another light beam. In previous work [19], we have demonstrated two-pathway optical switching based on four-wave mixing (FWM) in hot rubidium vapour, in which both 87 Rb and 85 Rb atoms are driven into a doubleconfiguration so that two FWM signals are generated with different wavelengths. Here we report an experimental demonstration of multi-pathway optical switching and routing based on four-wave mixing and six-wave mixing (SWM) using the double-and triple-configurations in a Ne-buffered hot-rubidium cell.…”

Dual-channel all-optical switching with tunable frequency in a five-level double-ladder atomic system

“…Antón et al proposed a method for optical switching with a technique based on controlled double-dark resonances [25,26]. Some of the above mentioned effects have been realized experimentally [27][28][29][30][31][32][33][34][35]. For instance, Yan et al [27] and Braje et al [28] demonstrated the Harris-Yamamoto scheme [15] in the Rb atomic system.…”

Synchronous control of dual-channel all-optical multistate switching

“…Many approaches have been proposed and demonstrated recently based on various physical mechanisms, such as optical bistability (OB) [1,2], electromagnetically induced transparency (EIT) [3,4], electromagnetically induced absorption (EIA) grating [5], wave mixing [6,7], two-photon absorption [8][9][10][11][12][13][14], and enhanced Kerr-nonlinearity [15]. However, most of those approaches are aimed at a binary switch, which has simple on/off states.…”

“…All-optical switch, a device utilizing one optical field to control another, i.e., controlling light with light, is an essential component for the next generation of alloptical communication and computing, and has potential applications in quantum information networks. Many approaches have been proposed and demonstrated recently based on various physical mechanisms, such as optical bistability (OB) [1,2], electromagnetically induced transparency (EIT) [3,4], electromagnetically induced absorption (EIA) grating [5], wave mixing [6,7], two-photon absorption [8][9][10][11][12][13][14], and enhanced Kerr-nonlinearity [15]. However, most of those approaches are aimed at a binary switch, which has simple on/off states.…”