Title:
Quasi-free-space optical coupling between diffraction grating couplers fabricated on independent substrates
Quasi-free-space optical coupling between diffraction grating couplers fabricated on independent substrates
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Author(s)
Mulé, Anthony V.
Villalaz, Ricardo A.
Gaylord, Thomas K.
Meindl, James D.
Villalaz, Ricardo A.
Gaylord, Thomas K.
Meindl, James D.
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Abstract
Optical coupling between preferential-order volume diffraction grating couplers fabricated on independent substrates is demonstrated. The coupling efficiency between gratings is quantified as a function of both grating and waveguide fabrication technology and relative angular position of the two substrates. A maximum grating-to-grating coupling efficiency of 31% is reported for coupling between two nonoptimized, nonfocusing, unpatterned volume grating couplers.
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2004-10
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Article