Huy, Bui and Cham , Tran Thi and Vinh, Ha Xuan and Van, Do Khanh and Hoi, Pham Van (2008) Erbium-doped silicon-rich oxide waveguides fabricated by using an electro-chemical method. JOURNAL OF THE KOREAN PHYSICAL SOCIETY .
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In this article, we describe and electro-chemical method for fabricating erbium-doped silicon-rich oxide (SRO) waveguides. The porosity, the Er-ion concentration and the refractive index can be controlled by varying the current density (continuous or pulsed currents) during the production process. The refractive index difference between the core and the cladding layers and the profile of the SRO waveguides were tested by using an in-line spectrometer and Field-emission scanning electron microscope (FE-SEM). The photo-luminescent (PL) emission of Er-ions at 1550 nm in the SRO waveguides could be obtained even when the excitation wavelength was away from the resonance absorption band of the Er-ions. This result revealed that Er-ions are possibly excited from the ground state I-4(15/2) to the first excited state I-4(13/2) by energy transfer from excited Si nano-crystallites. The Er-doped SRO waveguides can be applied to optoelectronic devices compatible with Si-based integrated circuit technology.
|Subjects:||Material Science > Nanofabrication processes and tools|
Physical Science > Nanoelectronics
Material Science > Nanostructured materials
|Deposited On:||22 Feb 2010 13:17|
|Last Modified:||22 Mar 2010 16:03|
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