Abstract
Crosstalk and insertion loss are the crucial determinants of ring resonated routers. A novel 2 × 2 optical switch is proposed through a combination of broadband waveguide crossing and X-shape photonic crystal ring resonators. The main goal of the proposed design is to demonstrate the switching wavelengths based on changing the refractive index and reduce the level of the crosstalk and insertion loss. The performance of the proposed structure is analyzed using two-dimensional finite difference time domain and plane-wave expansion methods. Results show that crosstalk noise and insertion loss can be significantly reduced by using optimized crossbar waveguide and novel structure with bending elimination, thereby allowing higher network scalability and better performance and utility for future many-core architectures. Maximum crosstalk and insertion loss of −37.41 and 0.3 dB are obtained at 1570.5 nm, respectively. The size of the proposed structure is 18.69 × 19.6 μm2, which can be used for photonic integrated circuits design due to its compactness.
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Dehghani, F., Mohammadi, S., Barekatain, B. et al. ICES: an innovative crosstalk-efficient 2 × 2 photonic-crystal switch. Opt Quant Electron 53, 234 (2021). https://doi.org/10.1007/s11082-021-02881-4
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DOI: https://doi.org/10.1007/s11082-021-02881-4