期刊
OPTICS EXPRESS
卷 23, 期 16, 页码 21414-21423出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.23.021414
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资金
- National Basic Research Program of China [2011CB301704]
- Program for New Century Excellent Talents in Ministry of Education of China [NCET-11-0168]
- Foundation for the Author of National Excellent Doctoral Dissertation of China [201139]
- National Natural Science Foundation of China [11174096, 61475052]
- Opened Fund of the State Key Laboratory on Advanced Optical Communication System and Network [2015GZKF03004]
We propose and experimentally demonstrate a 4-port passive encoder for 4-bit Gray code on pure silicon platform. The operation principle for this device is the thermo-optic (TO) effect in silicon microring resonator (MRR) whose transmission spectrum could be shifted by injecting strong light power. Therefore, the output powers of both the through-port and drop-port of the MRR could be controllable and switchable. Two threshold powers are defined to decide the port output code of bit 0 or 1. By combining two independent resonant wavelengths of two MRRs and adjusting their powers in a certain order, all-optical 4-bit Gray code generation has been successfully demonstrated. The proposed integrated device is competent in on-chip all-optical communication and optical interconnection systems with significant advantages, such as simple operation, compact size, economical fabrication process and great scalability. (C) 2015 Optical Society of America
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