Optical loss of photochromic polymer films

Song Yun Cho; Eunkyoung Kim

doi:10.1117/12.485816

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14 July 2003 Optical loss of photochromic polymer films

Song Yun Cho, Eunkyoung Kim

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Proceedings Volume 4991, Organic Photonic Materials and Devices V; (2003) https://doi.org/10.1117/12.485816
Event: Integrated Optoelectronics Devices, 2003, San Jose, CA, United States

Abstract

Optical loss of polymer films containing photochromic molecules were investigated. Perfluoroalkyl methacrylates containing carbonate or carbamate group were synthesizd to improve optical and adhesion properties of the polymerized film. Transparent polymer films were prepared by photocuring of a solution containing the perfluoroalkyl methacylates and a photoinitiator. Optical loss lower than 0.35 dB/cm at 1550 nm was determined from the photo cured film without photochromophore, for the TE polarization by measuring the transmitted power along the slab waveguide length. Photochromic polymer films were prepared by photocuring of the perfluoroalkyl methacrylates solution containing diarylethenes as a photochromophore. The resultant photochromic films showed reversible color change plus photo induced refractinve index change upon excitation with a light. Optical loss of the photochromic film at colorless state was determined as 0.27 dB/cm. Optical loss of the photochromic film at colored state was similar to that of the colorless state. The photochromic films showed optical and refractive index tunability by light under very low optical loss.

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Song Yun Cho and Eunkyoung Kim "Optical loss of photochromic polymer films", Proc. SPIE 4991, Organic Photonic Materials and Devices V, (14 July 2003); https://doi.org/10.1117/12.485816

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