【摘 要】
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The improved performance of a wavelength-tunable arrayed waveguide grating (AWG) is demonstrated,including the crosstalk,insertion loss and the wavelength tunin
【机 构】
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State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of
论文部分内容阅读
The improved performance of a wavelength-tunable arrayed waveguide grating (AWG) is demonstrated,including the crosstalk,insertion loss and the wavelength tuning efficiency.A reduced impact of the fabrication process on the AWG is achieved by the design of bi-level tapers.The wavelength tuning of the AWG is achieved according to the thermo-optic effect of silicon,and uniform heating of the silicon waveguide layer is achieved by optimizing the heater design.The fabricated AWG shows a minimum crosstalk of 16 dB,a maximum insertion loss of 3.91 dB and a wavelength tuning efficiency of 8.92 nm/W,exhibiting a ～8 dB improvement of crosstalk,～2.1 dB improvement of insertion loss and ～5 nm/W improvement of wavelength tuning efficiency,compared to our previous reported results.
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