Fig. 1: Four-channel coarse wavelength division multiplexer. | Nature Communications

Fig. 1: Four-channel coarse wavelength division multiplexer.

From: Integrated silicon nitride devices via inverse design

Fig. 1

a Device design, where the black areas represent silicon nitride and the white ones represent silicon dioxide. b SEM image of the fabricated device without layout corrections, with a total footprint of 24 × 24 μm2. c Simulated electromagnetic energy density at the central operating wavelength of each channel.

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