بررسي و كنترل مشخصات عملكردي ساختار تزويجگر نوري هيبريدي مبتني بر ميكروفيبرهاي سيليكا و پليمر

All-optical switches (AOSs), which uniquely enable light to be controlled by light, are crucial components in advanced photonics. Nevertheless, developing materials with suitable nonlinear effects an‎d designing structures capable of high- performance all-optical switching remain major challenges. In this study, polymer microfibers (P-MF) are fabricated using polyvinylpyrrolidone (PVP) blended with Azobenzene Disperse Red 1 an‎d silver nanoparticles (AgNPs). The first study introduces an AOS featuring a hybrid silica-azopolymer optical microfiber coupler configuration. This structure exhibits in-line switching functionality, an exceptionally high extinction ratio of 22 dB at λ = 1550 nm, low inser‎tion loss (<‎1 dB), an‎d a simple fabrication process. It is shown that, due to the photo-induced birefringence in the azopolymer microfiber, the functionality of the proposed switch depends on the polarization states of the controlling an‎d propagating light signals. In the second study, the fabrication speed of the switch structure is enhanced by using AgNP-polymer microfibers, while maintaining the modulation depth.

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