Title :
Optimized 90° hybrids with sidewall grating in silicon on insulator
Author :
Fohn, Thomas ; Vogel, Wolfgang ; Schmidt, Martin ; Berroth, Manfred ; Butschke, Jorg ; Letzkus, Florian
Author_Institution :
Inst. of Electr. & Opt. Commun. Eng., Univ. of Stuttgart, Stuttgart, Germany
Abstract :
MMI-based 90° hybrids are optimized with sidewall gratings acting as effective index medium, notably increasing the usable bandwidth. Optimum grating parameters are determined with eigenmode expansion and Floquet-Bloch theory.
Keywords :
Bragg gratings; eigenvalues and eigenfunctions; optical couplers; optical receivers; silicon-on-insulator; Floquet-Bloch theory; MMI-based 90° hybrids; effective index medium; eigenmode expansion; multimode interference couplers; optimum grating parameters; sidewall grating; silicon on insulator; Couplers; Indexes; Insulators; Interference; Silicon;
Conference_Titel :
Optical Fiber Communications Conference and Exhibition (OFC), 2014
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-5575-2994-7
DOI :
10.1364/OFC.2014.Th3F.4
