Improved Performance of a Wavelength-Tunable Arrayed Waveguide Grating in Silicon on Insulator
Pei Yuan1,2† , Xiao-Guang Zhang3† , Jun-Ming An1,2 , Peng-Gang Yin3 , Yue Wang1** , Yuan-Da Wu1,2**
1 State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 1000832 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 1000493 Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100083
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 $\sim $8 dB improvement of crosstalk, $\sim $2.1 dB improvement of insertion loss and $\sim $5 nm/W improvement of wavelength tuning efficiency, compared to our previous reported results.
收稿日期: 2019-01-23
出版日期: 2019-04-17
:
42.81.Qb
(Fiber waveguides, couplers, and arrays)
42.82.Et
(Waveguides, couplers, and arrays)
42.79.Sz
(Optical communication systems, multiplexers, and demultiplexers?)
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2019, Vol. 36 
