[{"key":"dc.contributor.author","value":"Ma, Minglei","language":null},{"key":"dc.date.accessioned","value":"2020-07-22T19:11:42Z","language":null},{"key":"dc.date.available","value":"2020-07-22T19:11:42Z","language":null},{"key":"dc.date.issued","value":"2020","language":"en"},{"key":"dc.identifier.uri","value":"http:\/\/hdl.handle.net\/2429\/75248","language":null},{"key":"dc.description.abstract","value":"Wavelength and polarization are the fundamental and key properties of lightwave transmissions. Photonic integrated circuits (PICs) on silicon-on-insulator (SOI) provide a low-cost, large-scale, and on-chip solution for the increasingly demanding optical interconnects. This thesis presents a theoretical and experimental study on wavelength and polarization manipulations for silicon photonic receiver applications. Firstly, wavelength and polarization components in SOI platforms are demonstrated; then, active subsystems based on the developed components are proposed and tested, in which mathematical methods-based, automated control algorithms are also investigated.\r\n\t\r\nFor the development of SOI components, first, narrow-band, Gaussian-apodized, spiral Bragg grating waveguides (SBGWs) are demonstrated for the use of wavelength filters. The fabricated apodized SBGWs perform smoother spectra with higher side-lobe suppression ratios, which prove that the applied apodization scheme can reduce the channel crosstalk of the multiple wavelength filters. Second, broadband, sub-wavelength grating (SWG)-assisted, adiabatic polarization splitter-rotators (PSRs) are experimentally demonstrated using an electron-beam lithography process and an optical lithography process, respectively. The SWG-PSRs are more compact than previously reported entirely adiabatic PSRs, and the PSRs fabricated using the optical lithography is the first implementation of an SWG-based structure in a standard, complementary metal-oxide semiconductor (CMOS) compatible fabrication process.\r\n\t\r\nFor the active subsystems demonstration, an automated polarization receiver (PR), formed by the adiabatic components, is proposed to overcome any arbitrary input polarization state from a standard optical fiber. Through the fabricated PR, high-speed transmission experiments are implemented to demonstrate the automated control process. Four control algorithms - greedy linear descent-based, basic gradient descent-based, two-point step size gradient descent-based, and two-stage optimization method-based control algorithm are developed. We implemented high-speed experimental to achieve automated adaptations and compared the control algorithms' performance as regards the iteration number and the output responses. Then, automated wavelength and polarization control in a wavelength-division multiplexing polarization receiver (WDM PR) are developed. We have designed and fabricated a two-channel WDM PR to implement the automated control process. The demonstrated gradient descent-based control algorithm is utilized for the automated adaptations of any arbitrary input polarization states, and, simultaneously, used for the automated stabilization of the channels.","language":"en"},{"key":"dc.language.iso","value":"eng","language":"en"},{"key":"dc.publisher","value":"University of British Columbia","language":"en"},{"key":"dc.rights","value":"Attribution-NonCommercial-NoDerivatives 4.0 International","language":"*"},{"key":"dc.rights.uri","value":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/","language":"*"},{"key":"dc.title","value":"Wavelength and polarization control for silicon photonic receiver applications","language":"en"},{"key":"dc.type","value":"Text","language":"en"},{"key":"dc.degree.name","value":"Doctor of Philosophy - PhD","language":"en"},{"key":"dc.degree.discipline","value":"Electrical Engineering","language":"en"},{"key":"dc.degree.grantor","value":"University of British Columbia","language":"en"},{"key":"dc.date.graduation","value":"2020-11","language":"en"},{"key":"dc.type.text","value":"Thesis\/Dissertation","language":"en"},{"key":"dc.description.affiliation","value":"Applied Science, Faculty of","language":"en"},{"key":"dc.description.affiliation","value":"Electrical and Computer Engineering, Department of","language":"en"},{"key":"dc.degree.campus","value":"UBCV","language":"en"},{"key":"dc.description.scholarlevel","value":"Graduate","language":"en"}]