Linear taper transmission line branch coupler

Gharbi, Yasser; Affandi, Adnan

doi:10.1109/icpcsi.2017.8392269

Cited by 1 publication

(1 citation statement)

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“…Different types of taper have been developed targeted at specific applications on the platform of silicon. [32][33][34][35][36][37] In the AWG design, using adiabatic tapers is also an effective approach to reduce the mode mismatch between the FPR and the arrayed waveguides. Compact parabolic tapers [13] and doubleetch tapers [38] have been demonstrated in an AWG to reduce the excess loss and receiver crosstalk.…”

Section: Optimized Curved Tapersmentioning

confidence: 99%

Ultra‐Low‐Crosstalk Silicon Arrayed‐Waveguide Grating (De)multiplexer with 1.6‐nm Channel Spacing

Shen,

Li,

Zhao

et al. 2023

Laser & Photonics Reviews

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A silicon arrayed‐waveguide grating (AWG) with 1.6‐nm channel spacing is proposed and realized with high performances for dense wavelength‐division (de)multiplexing systems. For the present AWG, the arrayed waveguides are broadened uniformly to be far beyond the singlemode regime, so that random phase errors and propagation loss are minimized even without any additional requirement for the fabrication process. Particularly, Euler‐bends are introduced for the arrayed waveguides to shrink the device footprint and suppress any excitation of higher‐order modes. As an example, a 16 × 16 AWG (de)multiplexer is realized with a compact footprint of 600 × 800 µm2 by using single‐etched 220‐nm‐thick silicon photonic waveguides. When using the fabricated AWG to demultiplex the channels launched from the central input port, the excess loss and the adjacent‐channel crosstalk of the central output port are ≈2.2 and ≈−31.7 dB, respectively. Such an AWG is one of the best among silicon implementations.

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