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We present a sub-wavelength grating (SWG) directional coupler, to split light between SWG waveguides. Fabricated devices have compact design combined with wavelength-flattened response and with low sensitivity to central wavelength changes and to fabrication errors.
This study of 371 identical resonators on a 16×9 mm chip fabricated by a silicon photonics foundry reveals a strong linear correlation between the physical distance between devices and the variability in their wavelength mismatch.
This paper presents a study on asymmetric slot waveguide resonators to be used as sensing elements in Laboratory on a chip (LOC). They combine slot waveguide high sensitivity and advantages, with improved resonator performance due to enhanced mode matching in racetrack bends. Depending on target bio-molecules, asymmetric slot resonators are very promising for small molecule sensing (dimensions <...
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