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Integrated dual-mode 3 dB power coupler based on tapered directional coupler.


ABSTRACT: A dual-mode 3 dB power coupler based on silicon-on-insulator platform for mode division multiplexing system is proposed and demonstrated. The device, which consists of a tapered directional coupler and two output bend waveguides, has a 50:50 coupling ratio around the wavelength of 1550 nm for both fundamental and first order transverse magnetic (TM0 and TM1) modes. Based on asymmetrical tapered structure, a short common coupling length of ~15.2 μm for both modes is realized by optimizing the width of the tapered waveguide. The measured insertion loss for both modes is less than 0.7 dB. The crosstalks are about -14.3 dB for TM0 mode and -18.1 dB for TM1 mode.

SUBMITTER: Luo Y 

PROVIDER: S-EPMC4802321 | biostudies-other | 2016 Mar

REPOSITORIES: biostudies-other

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