Low-index electro-optic sol-gel materials

Danliang Jin; Diyun Huang; Stephen Condon; HannWen Guan; Shuxin Cong; Anna Barklund; Raluca Dinu

doi:10.1117/12.635268

1 December 2005 Low-index electro-optic sol-gel materials

Danliang Jin, Diyun Huang, Stephen Condon, HannWen Guan, Shuxin Cong, Anna Barklund, Raluca Dinu

Proceedings Volume 6020, Optoelectronic Materials and Devices for Optical Communications; 602006 (2005) https://doi.org/10.1117/12.635268
Event: Asia-Pacific Optical Communications, 2005, Shanghai, China

Abstract

Polymeric electro-optic materials have made significant progress in increasing electro-optic co-efficient, enhancing temporal stability, and lower optical loss at operating wavelength. To fully realize the electro-optic activity in a waveguide device, appropriate cladding materials need to be designed carefully and a compatible fabrication process should be developed accordingly, which has been challenging and tedious. It would be desirable if glass-based optical fiber or silica substrate can be utilized as parts of device materials. The challenge is to match the relatively lower refractive index of fiber and silica substrates. Thus, a low refractive (~1.44) of electro-optic material was designed. The efforts include the synthesis and characterization of the low index host materials via sol-gel process and silanization of a chromophore with large hyperpolarizability. In this study, an electro-optic sol-gel material with a refractive index ~1.44 at the wavelength of 1.55 μm was developed. It was highly processible and compatible with glass-based fiber or silica-based materials. An interdigitated electrode configuration is designed and a substrate with such a configuration was fabricated. Combined with the in-situ SHG monitoring setup, poling process can be readily monitored and optimized. The r₃₃ obtained at the wavelength of 1.3 μm is 19 pm/V. Thus, it becomes possible to design optical devices using glass-based fiber or silica substrate as part of the device structure, which could simplify the material and process development.

Citation Download Citation

Danliang Jin, Diyun Huang, Stephen Condon, HannWen Guan, Shuxin Cong, Anna Barklund, and Raluca Dinu "Low-index electro-optic sol-gel materials", Proc. SPIE 6020, Optoelectronic Materials and Devices for Optical Communications, 602006 (1 December 2005); https://doi.org/10.1117/12.635268

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