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10 January 2005 Zero-birefringence photosensitive poly(arylene ether) for optical waveguides
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Proceedings Volume 5623, Passive Components and Fiber-based Devices; (2005)
Event: Asia-Pacific Optical Communications, 2004, Beijing, China
Novel photosensitive fluorinated poly(arylene ether) containing chalcone unit (F-PAECh) in the main chain was synthesized from decafluorinated chalcone and fluorinated bisphenol at low temperature for polymer optical waveguide application. Upon UV irradiation on the resulting polymer film, [2+2] cycloaddition of chalocone moiety induced the anisotropic decrease of the refractive indices (nTE and nTM) accompanied with crosslinking of polymer film. The decrease was more significant in in-plane direction than out-of-plane direction, and consequently, zero birefringence was obtained with 4.5 min of exposure. Zero-birefringence as well as its excellent optical properties of F-PAECh makes it a promising candidate material for use in high-performance wavelength division multiplexing components such as polarization-independent arrayed waveguide gratings and Bragg wavelength filters.
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Xiang-Dan Li, Zhen-Xin Zhong, Jang Joo Kim, and Myong-Hoon Lee "Zero-birefringence photosensitive poly(arylene ether) for optical waveguides", Proc. SPIE 5623, Passive Components and Fiber-based Devices, (10 January 2005);

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