Misalignment-Tolerant Ultra-Broadband Edge Coupler Based on 10 Inverse Tapers
2021
We report a compact 10-tip inverse tapered edge coupler design for silicon photonics integrated circuits that has a coupling efficiency of -0.72 dB at 1310 nm and -1.12 dB at 1550 nm considering a TE-polarized 3 $\mu \mathrm{m}$ MFD source. 3D-FDTD simulations show that the design exhibit a 1-dB bandwidth of more than 400 nm for both TE and TM modes with polarization-dependent loss less than 0.4 dB and 1-dB horizontal misalignment tolerance of 2.35 $\mu \mathrm{m}$ .
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