Zobrazeno 1 - 10
of 89
pro vyhledávání: '"Omar Qasaimeh"'
Autor:
Omar Qasaimeh
Publikováno v:
Optical and Quantum Electronics. 54
Autor:
Omar Qasaimeh
Publikováno v:
Optical and Quantum Electronics. 53
We propose and theoretically demonstrate a novel type of an all-optical switch using two vertically coupled cavities. The top passive cavity contains 2 graphene flakes that are used to control the resonant behavior of the dual cavity structure while
Autor:
Omar Qasaimeh
Publikováno v:
Optical and Quantum Electronics. 52
A novel approach for achieving ultrafast and wide tunable vertical-cavity surface-emitting lasers (VCSELs) is presented. The design is based on incorporating multiple graphene flakes separated by SiO2 dielectric in a λ/2 cavity and placing multiquan
Autor:
Omar Qasaimeh
Publikováno v:
Optical and Quantum Electronics. 52
A novel approach for enhancing the tuning speed of vertical-cavity surface-emitting lasers (VCSEL) is presented. The design is based on incorporating gated multiple graphene flakes in one of the DBR layers that is adjacent to the cavity to tune the r
Autor:
Omar Qasaimeh
Publikováno v:
Optical and Quantum Electronics. 51
Novel closed-form model for the threshold conditions and the optical gains of vertical dual-cavity semiconductor optical amplifier (VDC-SOA) is derived. Expressions for the transfer functions that relate the average photon density inside the two cavi
Autor:
Omar Qasaimeh
Publikováno v:
IEEE Photonics Technology Letters. 29:342-345
Autor:
Omar Qasaimeh
Publikováno v:
Applied Mechanics and Materials. 850:100-104
We analyze the bistable characteristics of quantum dot vertical cavity semiconductor optical amplifier integrated with saturable absorber. The device demonstrates bistable characteristics in the input-output powers which can be controlled by changing
Autor:
Omar Qasaimeh
Publikováno v:
IEEE Photonics Technology Letters. 28:1553-1556
We propose and theoretically demonstrate a novel type of tunable bistable device. Detuning is achieved by introducing deflectable microelectromechanical systems (MEMS) membrane suspended above the top distributed Bragg reflector (DBR). By applying ex
Autor:
Omar Qasaimeh
Publikováno v:
Optics Communications. 364:115-122
We have studied the characteristics of optical bistability of different types of optical modes amplified by small-size quantum dot vertical cavity semiconductor optical amplifiers operated in reflection. Our analysis reveals that TE01 mode exhibits s
Autor:
Omar Qasaimeh
Publikováno v:
Optical and Quantum Electronics. 50
We propose and theoretically demonstrate a novel type of all-optical multistable device using single quantum dot distributed feedback semiconductor optical amplifier. The device utilizes cross-gain modulation with proper wavelength detuning to obtain