Dye-doped polymeric planar waveguide devices based on a thermal UV-bleaching technique
✍ Scribed by Changming Chen; Xiaoqiang Sun; Dan Zhang; Zhibo Shan; Sang-Yung Shin; Daming Zhang
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 768 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0030-3992
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✦ Synopsis
A new type of single-mode embedded dye-doped polymeric planar waveguide device based on crosslinkable negative photoresist has been successfully designed and fabricated using a UV-bleaching technique. A notable difference in the refractive index of the resist between exposed and un-exposed regions was observed, which was found to be dependent on the curing temperature. The new fabrication technique is a simple, rapid, and controllable process. The easy-to-fabricate waveguide structure is suitable for planar light-wave circuit applications. By optimizing the poling temperature and the dopant levels of Disperse Red 1, the material showed excellent photostability and exhibited a electro-optic coefficient, g 33 , of 25 pm/V. The dye-doped polymeric planar waveguide devices will be useful in realizing electro-optic (EO) modulators and switches.