Adopting mode division multiplex (MDM) technology as the next frontier for optical fiber
communication and on-chip optical interconnection systems is becoming very promising …

We report a mode (de) multiplexer based on the structure of cascaded vertical waveguide
directional couplers, where the spatial modes of a few-mode core are coupled to various …

We present a mode multiplexer based on vertical directional couplers that are formed by
adiabatic-tapered waveguides. We design and fabricate the device via the micro-fabrication …

We propose a reconfigurable broadband mode (de) multiplexer based on a thermally
induced long-period grating integrated with an asymmetric Y-junction. Either of the two …

The interlayer distance optimized for low-loss and low-crosstalk double-layer polymer
optical waveguides was investigated to enhance their transmission performance …

A compact and low-crosstalk mode (de) multiplexer [(De) MUX] is proposed based on a
triple-waveguide coupler, consisting of a hybrid plasmonic waveguide in between two outer …

We propose a three-dimensional waveguide structure for the realization of mode-selective
switches, where the high-order spatial modes of a few-mode waveguide can be switched to …

We propose a thermo-optic switch based on a symmetric directional coupler formed with two
parallel identical two-mode waveguides, where the two modes in one waveguide can be …

The idea of adopting the space domain as the next frontier for optical communication has
received increasing attention in the last few years. Optical devices are the integral parts of a …

We propose a three-dimensional (3D) long-period grating structure that has a controllable
grating width and depth and can be formed at any chosen position on the surface of a …