All-fiber phase modulator and switch based on local surface plasmon resonance effect of the gold nanoparticles embedded in gel membrane
| Autor: | Xinghua Yang, Nigel Copner, Zhanao Li, Ximiao Yu, Xiaozhang Wang, Meng Luo, Jun Yang, Libo Yuan, Zhihai Liu, Danheng Gao, Xingyue Wen, Kang Li, Pingping Teng, Mark Bowkett, Depeng Kong |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
business.product_category business.industry Physics::Optics Surface-enhanced Raman spectroscopy 01 natural sciences Atomic and Molecular Physics and Optics 010309 optics Interferometry chemistry.chemical_compound Optics chemistry Colloidal gold 0103 physical sciences Microfiber Agarose Optoelectronics Electrical and Electronic Engineering Photonics Surface plasmon resonance business Engineering (miscellaneous) Piranha solution |
| Zdroj: | Applied Optics. 59:10506 |
| ISSN: | 2155-3165 1559-128X |
| Popis: | All-fiber modulators and switches have drawn great interest in the photonics domain, and they are applied in viable photonic and optoelectronic devices. In this work, with the assistance of an agarose membrane, aspherical gold nanoparticles are embedded on the surface of the microfiber treated with the piranha solution. An all-fiber Mach–Zehnder interferometer was used to realize a low-cost, low-loss, and conveniently prepared all-fiber phase modulator. By taking advantage of the local surface plasmon resonance effect of gold nanoparticles embedded in the agarose membrane, under the excitation of near-infrared region light, the gold nanoparticles were excited to change the effective refractive index of one arm of the Mach–Zehnder interferometer. A maximum phase shift of ∼ 6 π at 1550 nm was obtained from the device. In addition, an all-optical switch was achieved with a rising edge time of 47 ms and falling edge time of 14 ms. The proposed all-fiber modulator and switch based on the local surface plasmon resonance effect of gold nanoparticles embedded in agarose membrane will provide great potential in all-optical fiber systems. |
| Databáze: | OpenAIRE |
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