DocumentCode :
1095112
Title :
Silicon Photonic Wire Filter Using Asymmetric Sidewall Long-Period Waveguide Grating in a Two-Mode Waveguide
Author :
Cho, Young-Bo ; Byung-Ki Yang ; Lee, Joo-Hyung ; Yoon, Jun-Bo ; Shin, Sang-Yung
Author_Institution :
Korea Adv. Inst. of Sci. & Technol., Daejeon
Volume :
20
Issue :
7
fYear :
2008
fDate :
4/1/2008 12:00:00 AM
Firstpage :
520
Lastpage :
522
Abstract :
We demonstrate a silicon photonic wire filter using asymmetric sidewall long-period waveguide gratings for the first time. The proposed device consists of single-mode waveguide sections, a two-mode section with corrugated gratings, and taper sections to connect them. The operation of this device is based on the codirectional coupling between two core modes. By adopting a high refractive index contrast waveguide, the period and depth of grating are given as 4.44 m and 5 nm, respectively. Thus, the total length of long-period grating is significantly reduced to 260 m. The measured maximum attenuation at the center wavelength is about 13 dB. The bandwidth of the transmission dip is 15 nm. Finally, issues on the design and the performance of our device are discussed.
Keywords :
diffraction gratings; integrated optics; optical couplers; optical waveguide filters; refractive index; silicon; Si; codirectional coupling; grating depth; grating period; high refractive index contrast waveguide; long-period waveguide grating; silicon photonic wire filter; two-mode waveguide; Gratings; Optical attenuators; Optical coupling; Optical fiber communication; Optical filters; Optical refraction; Optical waveguides; Refractive index; Silicon; Wire; Asymmetric sidewall grating; codirectional coupling; integrated optics; long-period grating; optical filters; optical waveguides; silicon photonic wire; silicon-on-insulator (SOI);
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/LPT.2008.918895
Filename :
4468800
Link To Document :
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