Integrated dual-mode waveguide interferometer

A novel type of interferometer with an ultra-small footprint is presented. The functional principle is based on the excitation of the first and the second order modes in an integrated dual-mode strip waveguide. The light is coupled from a single mode fiber to the dual-mode waveguide by a conventiona...

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Published in2015 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD) pp. 155 - 156
Main Authors Hoppe, Niklas, Fohn, Thomas, Rosa, Maria Felix, Vogel, Wolfgang, Zaoui, Wissem Sfar, Kaschel, Mathias, Butschke, Jorg, Letzkus, Florian, Berroth, Manfred
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2015
Subjects
Couplers
Fiber gratings
Optical fiber couplers
Optical fiber sensors
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Summary:A novel type of interferometer with an ultra-small footprint is presented. The functional principle is based on the excitation of the first and the second order modes in an integrated dual-mode strip waveguide. The light is coupled from a single mode fiber to the dual-mode waveguide by a conventional grating coupler followed by a taper. The difference in the mode propagation velocity leads to a phase difference between the fundamental mode and the second order mode. A proof of concept in the silicon on insulator technology shows promising extinction ratios of around 30 dB.
ISBN:9781479983780
1479983780
ISSN:2158-3234
DOI:10.1109/NUSOD.2015.7292869