Controlled All-optical Switching

Kumar Kumar

Andy Brown, Amitabh Joshi, Min Xiao

Optical switching has been achieved between two steady states of optical bistability generated in a system with three-level atoms inside an optical cavity. The optical power switching is controlled by adding short positive (switching up) or negative (switching down) pulses to the input intensity. The coupling laser beam in the three-level atomic system is used to control the threshold value and the width of the hysteresis cycle, which can adjust and optimize the optical switching process.

Hyatt M. Gibbs

Nasibe Pasyar

The proposed 1 × 8 and 8 × 1 all-optical controllable switch arrays can switch an optical pulse from an input port to one of eight output ports or from one of the eight input ports to only one output port. Where, the switching wavelength can be controlled by control fields to use for different optical pulses. In this paper dipole induced transparency (DIT) effect is used in photonic crystal quantum electrodynamics (PC-QED) cavity doped with a type three-level nano crystal as an all-optical switch.

Chin‐Chun Tsai, Yi-Chi Lee, Hsiang‐Chen Chui

New scheme of a real-time all-optical switching (AOS) was demonstrated as the fluorescence signal of cesium two-photon transition (TPT) with the control field. This work explored the optical phenomenon of the TPT with the control field that shares a common excited state, in which the TPT fluorescence is quenched under the control field intensity. The strong stimulated emission due to the control laser suppresses the TPT fluorescence, working as an optical switch. A “NOT gate” is generated for realization of AOS. The power spectrum of the intensity range, which can be used for the AOS, is determined.

Kuznetsova, Remeika, Hammack +3 more