Chromatic Dispersion Compensator using SOI Optical Ring Resonator

• Main Authors: CHEN SHANG CI, 陳尚祺
• Other Authors: Shih-Hsiang Hsu
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/16918139282827456997

碩士 === 國立臺灣科技大學 === 電子工程系 === 101 === A silicon-on-insulator platform based optical waveguides with large refractive index provides high efficiency, high quality, low cost and its fully compatible processing with the complementary metal-oxide-semiconductor (CMOS) standard process. Therefore, it is extensively utilized to construct the optoelectronic devices for the applications of higher speed and lower power consumption. Moreover, the large refractive index difference between silicon and silicon dioxide layers can significantly reduce the device form size to submicron scale. Moreover, the silicon wire based optical ring resonator owns the potential of highly integrated optical circuits and easy manipulation on the free spectral range (FSR) in optical communications. In this thesis, the transfer matrix method (TMM) on chromatic dispersion (CD) compensation from the silicon-wire-waveguide based optical ring resonator was studied and simulated for the operating wavelength dependence. The optical ring resonator couplers were made of two different approaches for wavelength independence, multimode interference (MMI) and Mach-Zehnder directional coupler (MZDC), a cascade of two directional couplers with the connected optical path difference. The splitting ratio from MMI was showing 10:90, in which 90 portions was into the ring region, instead of theoretic 50:50 due to the stress from silicon-on-insulator (SOI) wafers and 300-nm silicon dioxide films. For larger CD compensation on the optical ring resonator, the splitting power into the ring region is expected to less values. Therefore, a MZDC coupler was designed and fabricated for the resonator splitting ratio of 87:13 and wavelength independence. The experimental data for CD compensation was ranging up +400 ps/nm due to the CD monitor limitation.