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Different-mode power splitters based on a multi-dimension direct-binary-search algorithm
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DOI：10.1364/OE.495918.png)
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Abstract
En 中文
In this work, we design, fabricate, and characterize a different-mode (waveguideconnected) power splitter ((W)PS) by what we believe to be a novel multi-dimension directbinary-search algorithm that can significantly balance the device performance, time cost, and fabrication robustness by searching the state-dimension, rotation-dimension, shape-dimension, and size-dimension parameters. The (W)PS can simultaneously generate the fundamental transverse electric (TE0) and TE1 mode with the 1:1 output balance. Compared with the PS, the WPS can greatly shorten the adiabatic taper length between the single-mode waveguide and the grating coupler. The measured results of the different-mode (W)PS indicate that the insertion loss and crosstalk are less than 0.9 (1.3) dB and lower than -17.8 (-14.9) dB from 1540 nm to 1560 nm. In addition, based on the tunable tap couplers, the different-mode (W)PS can be extended to multiple output ports with different modes and different transmittances.
Keywords:
BROAD-BAND
ON-CHIP
ULTRA-COMPACT
Journal
IF:
3.3
Papers:
6.1W
Citations:
14.3W
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