Wavelength-selective coupling among three vertically integrated optical waveguides by grating couplers

Selective coupling between two specified optical waveguides in a multistory device via radiation modes was proposed and discussed. Three single-TE-mode waveguides consisting of a Corning 7059 glass guiding core layer and a SiO/sub 2/ waveguide-separation layer were stacked on a Si substrate with gra...

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Bibliographic Details
Published in:IEEE photonics technology letters 2001-02, Vol.13 (2), p.133-135
Main Authors: Ura, S., Nishida, R., Suhara, T., Nishihara, H.
Format: Article
Language:English
Subjects:
Couplers
Couplings
Diffraction gratings
Gratings
Gratings (spectra)
Integrated optics
Joining
Optical coupling
Optical devices
Optical interconnections
Optical waveguide components
Optical waveguides
Semiconductor waveguides
Silicon substrates
Substrates
Wavelengths
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Summary:Selective coupling between two specified optical waveguides in a multistory device via radiation modes was proposed and discussed. Three single-TE-mode waveguides consisting of a Corning 7059 glass guiding core layer and a SiO/sub 2/ waveguide-separation layer were stacked on a Si substrate with grating couplers. The coupling length was 0.5 mm. Contradirectional couplings from the first story to the second story at a wavelength of 814 nm and from the first story to the third story at 819 nm with sharp wavelength dependence of 0.5-nm full-width at half-maximum (FWHM) were experimentally demonstrated.
ISSN:1041-1135
1941-0174
DOI:10.1109/68.910512