Wavelength independent multimode interference coupler

  1. Get@NRC: Wavelength independent multimode interference coupler (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1364/OE.21.007033
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Journal titleOptics Express
Pages70337040; # of pages: 8
Subject3d finite difference time domains; Conventional design; Dispersion properties; Eigen-mode expansion; Multimode interference couplers; Optical communication bands; Sub-wave length grating; Wavelength dependence; Finite difference time domain method; Integrated optics; Time domain analysis; Design; article; computer aided design; equipment; equipment design; equipment failure; refractometry; surface plasmon resonance; telecommunication; Computer-Aided Design; Equipment Design; Equipment Failure Analysis; Refractometry; Surface Plasmon Resonance; Telecommunications
AbstractWe propose an ultra-broadband multimode interference (MMI) coupler with a wavelength range exceeding the O, E, S, C, L and U optical communication bands. For the first time, the dispersion property of the MMI section is engineered using a subwavelength grating structure to mitigate wavelength dependence of the device. We present a 2 × 2 MMI design with a bandwidth of 450nm, an almost fivefold enhancement compared to conventional designs, maintaining insertion loss, power imbalance and MMI phase deviation below 1dB, 0.6dB and 3°, respectively. The design is performed using an in-house tool based on the 2D Fourier Eigenmode Expansion Method (F-EEM) and verified with a 3D Finite Difference Time Domain (FDTD) simulator. © 2013 Optical Society of America.
Publication date
AffiliationNRC Institute for Microstructural Sciences; National Research Council Canada
Peer reviewedYes
NPARC number21270638
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Record identifier4c221518-e0ca-4837-a082-1b39eb7a511d
Record created2014-02-17
Record modified2016-05-09
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