ИСТИНА |
Войти в систему Регистрация |
|
Интеллектуальная Система Тематического Исследования НАукометрических данных |
||
We consider interaction of a short optical pulse with one dimensional PT-symmetric photonic crystal with periodically modulated permittivity and periodic gain-and-loss landscape. It is found that if the medium is quasi PT-symmetric, in the vicinity of the exceptional point, the pulse propagation manifests strong unidirectional reflection and invisibility. Due to strong frequency selectivity, quasi-PT-symmetric photonic crystal manifests efficient filtering of back radiation.