The optical network-on-chip (ONoC) is a promising alternative to the traditional electrical network. However, in manycore systems, the crosstalk noise and insertion loss significantly limit the scalability of ONoCs. We propose a 2 × 2 optical switch composed of two microring resonator-based switching elements with no waveguide crossings. Also, the effects of reducing power loss, due to the waveguide crossing elimination, on the transmission spectra are investigated. The crosstalk noise is measured −15 dB for the through port and larger than −20 dB for the drop port. An insertion loss values on through and drop states are equal to 0.8 and 1.3 dB for λ = 1462.2 nm and λ = 1501 nm, respectively. The simulation results show that the 2 × 2 HDMS can be an appropriate candidate in silicon photonic integrated circuits.
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