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Effect of wavelength shift on PLC-type WDM directional coupler by UV irradiation
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- Authors
- Sang-Pil Han, Taesang Park, Soo-Jin Park, Ki-Tae Jeong
- Issue Date
- 2000-09
- Citation
- IEEE Photonics Technology Letters, v.12, no.9, pp.1189-1191
- ISSN
- 1041-1135
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- The UV light of KrF excimer laser, which is used for making fiber gratings, is irradiated on PLC-type WDM directional couplers. After the irradiation, the shift of transmission wavelengths is observed as a function of UV exposure dose. The amount of the effective refractive index change of rectangular silica waveguides is calculated by the coupled mode theory and the measured data.
- KSP Keywords
- Effective Refractive Index, Fiber grating, KrF excimer laser, Refractive index change, Silica waveguide, UV exposure dose, UV irradiation, UV light, coupled-mode theory, directional coupler(DC), measured data