Inverted optical bistability and optical limiting in coherently driven exciton–polaritons

Nonlinear Responses and Optical Limiting Behavior of Ag Nanoparticle Suspension

In this study, the nonlinear optical properties and optical limiting performance of the silver nanoparticles (AgNPs) in distilled water are investigated. The nonlinear absorption coefficient of the colloid is measured by the Z-scan technique. The optical limiting behavior of the AgNP suspension is investigated under exposure to nanosecond laser pulses at 532 nm. The results show that nonlinear ...

Investigations of a coherently driven semiconductor optical cavity QED system

Chip-based cavity quantum electrodynamics QED devices consisting of a self-assembled InAs quantum dot QD coupled to a high quality factor GaAs microdisk cavity are coherently probed through their optical channel using a fiber taper waveguide. We highlight one particularly important aspect of this all-fiber measurement setup, which is the accuracy to which the optical coupling level and optical ...

Optical Bistability and its Computation

Optical Bistability in Active Devices

1 . I n t r o d u c t i o n R e c e n t p r o g r e s s i n t h e s t u d y o f b o t h a b s o r p t i v e a n d d i s p e r s i v e b i s t a b i l i t y i n l a s e r d i o d e s (LDs) i s r e v i e w e d / I / . T h e m o s t d i s t i n c t i v e f e a t u r e o f b i s t a b l e LDs i s t h a t t h e y h a v e o p t i c a l g a i n . O p t i c a l g a i n r e s u l t s i n a d v a n t a g...

Optimization of Bistability in Nonlinear Chalcogenide Fiber Bragg Grating for All Optical Switch and Memory Applications

We solve the coupled mode equations governing the chalcogenide nonlinear fiber Bragg gratings (FBGs) numerically, and obtain the bistability characteristics. The characteristics of the chalcogenide nonlinear FBGs such as: switching threshold intensity, bistability interval and on-off switching ratio are studied. The effects of FBG length and its third order nonlinear refractive index on FBG cha...