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Tailorable and Broadband On-Chip Optical Power Splitter

Department of Physics, Pohang University of Science and Technology, Pohang 37673, Korea
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Appl. Sci. 2019, 9(20), 4239; https://doi.org/10.3390/app9204239
Received: 20 September 2019 / Revised: 2 October 2019 / Accepted: 4 October 2019 / Published: 10 October 2019
(This article belongs to the Special Issue Innovation within Micro- and Nanotechnologies)
An on-chip optical power splitter is a key component of photonic signal processing and quantum integrated circuits and requires compactness, wideband, low insertion loss, and variable splitting ratio. However, designing an on-chip splitter with both customizable splitting ratio and wavelength independence is a big challenge. Here, we propose a tailorable and broadband optical power splitter over 100 nm with low insertion loss less than 0.3%, as well as a compact footprint, based on 1×2 interleaved tapered waveguides. The proposed scheme can design the output power ratio of transverse electric modes, lithographically, and a selection equation of a power splitting ratio is extracted to obtain the desired power ratio. Our splitter scheme is close to an impeccable on-chip optical power splitter for classical and quantum integrated photonic circuits. View Full-Text
Keywords: integrated beam splitter; silicon photonics; tailorable power splitting ratio integrated beam splitter; silicon photonics; tailorable power splitting ratio
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Kim, H.; Shin, H. Tailorable and Broadband On-Chip Optical Power Splitter. Appl. Sci. 2019, 9, 4239.

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