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On-Chip E00-E20 Mode Converter Based on Multi-Mode Interferometer
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DOI：10.3390/mi14051073.png)
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Abstract
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Mode converters is a key component in mode-division multiplexing (MDM) systems, which plays a key role in signal processing and multi-mode conversion. In this paper, we propose an MMI-based mode converter on 2%-?silica PLC platform. The converter transfers E-00 mode to E-20 mode with high fabrication tolerance and large bandwidth. The experimental results show that the conversion efficiency can exceed -1.741 dB with the wavelength range of 1500 nm to 1600 nm. The measured conversion efficiency of the mode converter can reach -0.614 dB at 1550 nm. Moreover, the degradation of conversion efficiency is less than 0.713 dB under the deviation of multimode waveguide length and phase shifter width at 1550 nm. The proposed broadband mode converter with high fabrication tolerance is promising for on-chip optical network and commercial applications.
Keywords:
integrated optic
mode converter
multimode interference
integrated optics devices
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