Analysis of semiconductor coupled waveguides with interband absorption

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• 作者：João Paulo N. Torres ; António Baptista…
• 刊名：Optical and Quantum Electronics
• 出版年：2016
• 出版时间：July 2016
• 年：2016
• 卷：48
• 期：7
• 全文大小：758 KB
• 刊物主题：Optics, Optoelectronics, Plasmonics and Optical Devices; Electrical Engineering; Characterization and Evaluation of Materials; Computer Communication Networks;
• 出版者：Springer US
• ISSN：1572-817X
• 卷排序：48

文摘

The main goal of this paper is the discussion of the energy transfer mechanisms between two concentric waveguides. An analytical model is developed for the electromagnetic propagation in two coupled concentric semiconductor waveguides. This model includes the calculation of the semiconductor refractive index taking into account the carrier densities, temperature and frequency. The model allows the analysis of the mechanisms of energy transfer between the two waveguides. As expected two types of energy loss are present, one related to the curvature of the waveguides and the other related to the absorption of the radiation in the semiconductor. Finally, the analyzed structure was optimized with regards to the above parameters.KeywordsAbsorption modelWaveguideFrequencyTemperatureCarrier density