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- W2953491643 abstract "A high-efficiency ultra-broadband multi-tip edge coupler based on a silicon-on-insulator platform for direct coupling with the elliptic beam of a distributed feedback laser was developed. The device is composed of a multi-tip section and a combiner section with extra offset regions to reduce the mode mismatch caused by the structural discontinuity which results from a limitation of the fabrication process that creates an inevitable gap width at the junction between the two sections. The widths and the spacing of the tips for the multi-tip section and the extra offset region for the combiner section are fine-tuned by using the particle swarm optimization method to reduce the mode mismatch. A high overall coupling efficiency up to 90.68% (0.4249 dB) at 1550 nm can be achieved for the optimized 90-μm-long four-tip edge coupler. The device can be operated over a broad spectral range of 1260-1675 nm with less than 1 dB extra loss. With its high-efficiency ultra-broadband operation and small device footprint, the proposed device is promising for laser-to-chip edge coupling in silicon photonics." @default.
- W2953491643 created "2019-07-12" @default.
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- W2953491643 date "2019-08-01" @default.
- W2953491643 modified "2023-10-13" @default.
- W2953491643 title "High-Efficiency Ultra-Broadband Multi-Tip Edge Couplers for Integration of Distributed Feedback Laser With Silicon-on-Insulator Waveguide" @default.
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- W2953491643 doi "https://doi.org/10.1109/jphot.2019.2924477" @default.
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