Abstract
We propose a reconfigurable broadband mode (de)multiplexer based on a thermally induced long-period grating integrated with an asymmetric -junction. Either of the two spatial modes of a two-mode waveguide launched into the grating end of the device can be switched into either of the two output ports of the -junction by controlling the electric power applied to the electrode heater that induces the grating. Our typical device fabricated with polymer material that has a length of shows a mode selectivity higher than 12 dB over the band at a switching power of 198 mW. The device could find applications in reconfigurable mode-division-multiplexing systems.
© 2018 Optical Society of America
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