Journal
OPTICS LETTERS
Volume 38, Issue 9, Pages 1422-1424Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.38.001422
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Funding
- National Natural Science Foundation of China [61077040]
- 863 project [2011AA010301]
- Zhejiang provincial grant [Z201121938]
- Doctoral Fund of Ministry of Education of China [20120101110094]
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A small silicon mode (de)multiplexer with cascaded asymmetrical directional couplers is demonstrated experimentally. As an example, a four channel mode (de)multiplexer is designed and realized for TM polarization. The fabricated mode (de)multiplexer has a low excess loss (<1 dB) as well as low crosstalk (<= 23 dB) over a broad wavelength range (similar to 20 nm). More channels can be achieved with two sets of orthogonal-polarization modes (e. g., 2N = 8) multiplexed when desired. (C) 2013 Optical Society of America
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