16 December 1993 Waveguide photonic devices made from thermally crosslinked second-order nonlinear optical polymers
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A number of new thermally crosslinkable second-order nonlinear optical polymers have been developed and characterized. These polymers are designed for stable nonlinear optical activities since both ends of the rod-like chromophores are locked into a polymer matrix by covalent bonds. Sizable nonlinearities were measured in these polymers and the thermal stability of both main chain and side chain polymers were improved significantly by thermally induced crosslinking. These thermosetting polymers, with the chromophores either included in the main chain or as side chain pendants, have been used in a number of device applications. Waveguide structures can be defined in these polymers by reactive ion etching or ultraviolet bleaching. Thin film integrated optical devices, such as high frequency electro-optic modulators and birefringent directional couplers have been fabricated with reactive ion etching and photo bleaching methods. Waveguide fabrication techniques for multi-layer structures are discussed in detail.
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William H. Steier, Yongqiang Shi, Peter M. Ranon, Chengzeng Xu, Bo Wu, Larry Raymond Dalton, Wenshen Wang, David Chen, Harold R. Fetterman, "Waveguide photonic devices made from thermally crosslinked second-order nonlinear optical polymers", Proc. SPIE 2025, Nonlinear Optical Properties of Organic Materials VI, (16 December 1993); doi: 10.1117/12.165293; https://doi.org/10.1117/12.165293


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