Low-Loss Multimode-Interference-Based Crossings for Silicon Wire Waveguides
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- 23 October 2006
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 18 (21) , 2260-2262
- https://doi.org/10.1109/lpt.2006.884726
Abstract
We report multimode-interference (MMI)-based crossings in high-index-contrast silicon wire waveguides. Our experiments show an MMI crossing of ~0.4-dB insertion loss, which suggests ~0.9-dB improvement from a control plain crossing of the same size and refractive index contrast. We also experimentally observe significant crosstalk suppression in our MMI crossing. The MMI crossing transmission exhibits wavelength dependence of less than 0.2 dB within the 1520-1580-nm wavelength rangeKeywords
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