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21 August 2014 Dual structure waveguide grating triplexer based on silicon-on-insulator
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Proceedings Volume 9233, International Symposium on Photonics and Optoelectronics 2014; 92331N (2014) https://doi.org/10.1117/12.2065160
Event: International Symposium on Photonics and Optoelectronics (SOPO 2014), 2014, Suzhou, China
Abstract
A compact dual-structure waveguide triplexer which consists of two waveguide gratings with different period and fill factor is presented. It not only achieves efficient coupling between single mode fiber and a silicon-on-insulator optical waveguide, but also realizes effectively splitting, especially, for three different wavelengths, i.e. 1.31μm, 1.49μm and 1.55μm. By appropriate choice of waveguide/grating parameters including thicknesses, periods, height, and fill factor, to optimize the mode matching, and improve coupling efficiency and decrease the value of crosstalk, the coupling efficiency for 1.55μm wavelength can reach about 70% for TE polarization light over the 40 nm wavelength bandwidth. The crosstalk is about -12dB. Simultaneously, for 1.31μm and 1.49μm, the coupling efficiency is 58% and 40%, respectively. Moreover, the crosstalk of the left and the right branch of waveguide is -10dB and -14dB, respectively.
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Junbo Yang, Shengli Chang, and JingJing Zhang "Dual structure waveguide grating triplexer based on silicon-on-insulator", Proc. SPIE 9233, International Symposium on Photonics and Optoelectronics 2014, 92331N (21 August 2014); https://doi.org/10.1117/12.2065160
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