Research PapersNo Access
Laser switch based on electric field modulated PT-symmetric structure
https://doi.org/10.1142/S0217984920501559Cited by:2 (Source: Crossref)
Abstract
In order to achieve a laser output at 1550 nm and a dynamical control, we perform an optimization design for one-dimensional PT-symmetric structure. The optimization is based on the structure parameters and the modulation of the external electric field. The optimization is performed by three steps: to achieve the defect mode, to achieve the amplification of the defect mode and to move the defect mode with a large peak value to the special wavelength 1550 nm. The maximum transmittance can reach 687.4. Through changing the electric field, the transmittance of the structure can be modulated to an arbitrary value from the cut-off state to its maximum value.
