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http://dx.doi.org/10.3807/KJOP.2017.28.6.346

High-reflectivity Tunable Wavelength Filters Incorporating an Apodized Bragg Grating with a High-refractive-index Polymer Layer  

Kim, Eon-Tae (Department of Electronics Engineering, Pusan National University)
Park, Tae-Hyun (Department of Electronics Engineering, Pusan National University)
Huang, Guanghao (Department of Electronics Engineering, Pusan National University)
Oh, Min-Cheol (Department of Electronics Engineering, Pusan National University)
Publication Information
Korean Journal of Optics and Photonics / v.28, no.6, 2017 , pp. 346-350 More about this Journal
Abstract
A tunable filter incorporating an apodized grating with a high-refractive-index polymer layer is demonstrated. In the apodized tunable filter, the reflectivity is decreased compared to that of a uniform grating, because of the gradually decreased grating depth. To increase the reflectivity of the apodized grating, a polymer of high refractive index is adopted for the apodized grating, and then high reflectivity is obtained while maintaining a narrow bandwidth. The apodized tunable filter exhibits a 3-dB bandwidth of 0.51 nm and a 20-dB bandwidth of 1.05 nm, with 98.5% reflection.
Keywords
Integrated optics; Optical waveguide; Wavelength filter; Polymer device;
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Times Cited By KSCI : 1  (Citation Analysis)
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