1. Improved Performance of a Wavelength-Tunable Arrayed Waveguide Grating in Silicon on Insulator*
- Author
-
Junming An, Yuanda Wu, Yue Wang, Pei Yuan, Xiaoguang Zhang, and Peng-Gang Yin
- Subjects
Materials science ,Silicon ,business.industry ,General Physics and Astronomy ,Silicon on insulator ,chemistry.chemical_element ,Semimetal ,Arrayed waveguide grating ,law.invention ,Wavelength ,Improved performance ,chemistry ,law ,Optoelectronics ,business - Abstract
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.
- Published
- 2019