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Efficient Planar-Integrated Free-Space Optical Interconnects Fabricated by a Combination of Binary and Analog Lithography

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6 Author(s)
Heming, R. ; Fak. fur Math. und Inf., Fern Univ. in Hagen, Hagen ; Wittig, L.-C. ; Dannberg, P. ; Jahns, J.
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Design, fabrication, and experimental testing of an integrated microoptical module for interconnection are reported. The systems integration is based on the concept of planar-integrated free-space optics. The module combines diffractive-reflective and refractive microoptics. The diffractive elements were fabricated by binary lithography and reactive ion etching. The refractive elements were made by analog lithography using a high-energy beam sensitive mask and replication in Ormocer. The fabricated module implemented a simple one-dimensional optical interconnect. Two versions were implemented for which insertion losses of approximately 8 and 4.5 dB were measured, respectively.

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Lightwave Technology, Journal of  (Volume:26 ,  Issue: 14 )