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Refractive index and temperature dependent displacements of resonant peaks of long period grating inscribed in hydrogen loaded SMF-28 fiber 被引量:2
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作者 T.M.Libish M.C.Bobby +4 位作者 J.Linesh s.mathew C.Pradeep V.P.N Nampoori P.Radhakrishnan 《Optoelectronics Letters》 EI 2012年第2期101-104,共4页
In this paper, the effects of refractive index (RI) of surrounding medium and ambient temperature on the transmission characteristics of a long period grating (LPG) are experimentally analyzed. The spectral behavior o... In this paper, the effects of refractive index (RI) of surrounding medium and ambient temperature on the transmission characteristics of a long period grating (LPG) are experimentally analyzed. The spectral behavior of LPG is investigated when the ambient index is higher or lower than that of the cladding material. The results show that the refractive index sensitivity of lower order attenuation bands is very low compared with that of the highest order attenuation band. But in the case of temperature, the lower order attenuation bands of the LPG can also exhibit good sensitivity like the higher-order bands. 展开更多
关键词 长周期光栅 温度依赖 折射率 共振峰 光纤 加载 位移 实验分析
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Performance of polymer/CdS organic-inorganic hybrid LEDs
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作者 C.Pradeep s.mathew +3 位作者 M.A.G.Namboothiry C.P.G.Vallabhan P.Radhakrishnan V.P.N.Nampoori 《Optoelectronics Letters》 EI 2016年第2期110-114,共5页
Organic-inorganic hybrid light emitting diodes(LEDs) were fabricated by incorporating cadmium sulphide(Cd S) nanoparticles in hole transporting layer and light emitting materials of a polymer LED. The Cd S nanoparticl... Organic-inorganic hybrid light emitting diodes(LEDs) were fabricated by incorporating cadmium sulphide(Cd S) nanoparticles in hole transporting layer and light emitting materials of a polymer LED. The Cd S nanoparticles with size of 10 nm were synthesized by precipitation technique. The LEDs incorporated with the Cd S nanoparticles show a reduction in turn on voltage and luminance. When the nanoparticles are incorporated in a suitable fluorene based light emitting polymer, the luminance is increased along with the decrease of turn on voltage. 展开更多
关键词 inorganic incorporated transporting blend cadmium coated hexagonal filtered adding attributed
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