26 June 2017 Slot silicon-gallium nitride waveguide in MMI structures based 1x8 wavelength demultiplexer
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Proceedings Volume 10335, Digital Optical Technologies 2017; 103350P (2017) https://doi.org/10.1117/12.2281163
Event: SPIE Digital Optical Technologies, 2017, Munich, Germany
We propose a novel 8-channel wavelength multimode interference (MMI) demultiplexer in slot waveguide structures that operated at 1530 nm, 1535 nm, 1540 nm, 1545 nm, 1550 nm, 1555 nm, 1560 nm and 1565 nm wavelengths. Gallium nitride (GaN) surrounded by silicon (Si) was founded as suitable materials for the slot-waveguide structures. The proposed device was designed by seven 1x2 MMI couplers, fourteen S-band and one input taper. Numerical investigations were carried out on the geometrical parameters by using a full vectorial-beam propagation method (FVBPM). Simulation results show that the proposed device can transmit 8-channel that works in the whole C-band (1530- 1565 nm) with low crosstalk ((-19.97)-(-13.77) dB) and bandwidth (1.8-3.6 nm). Thus, the device can be very useful in optical networking systems that work on dense wavelength division multiplexing (DWDM) technology.
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Bar Baruch Ben Zaken, Bar Baruch Ben Zaken, Tal Zanzury, Tal Zanzury, Dror Malka, Dror Malka, } "Slot silicon-gallium nitride waveguide in MMI structures based 1x8 wavelength demultiplexer", Proc. SPIE 10335, Digital Optical Technologies 2017, 103350P (26 June 2017); doi: 10.1117/12.2281163; https://doi.org/10.1117/12.2281163

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