• Title/Summary/Keyword: photonic integrated circuit (PIC)

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Optical Characteristics of Plamonic Waveguide Using Tapered Structure (테이퍼 구조를 이용한 플라즈모닉 도파로의 광학 특성)

  • Kim, Doo Gun;Kim, Hong-Seung;Oh, Geum-Yoon;Kim, Seon-Hoon;Ki, Hyun-Chul;Kim, Tae-Un;Kim, Hwe Jong;Ma, Ping;Hafner, Christian;Choi, Young-Wan
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.27 no.3
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    • pp.156-161
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    • 2014
  • We have investigated the optical properties of plamonic waveguide with tapered structure based on InP material for photonic integrated circuit(PIC). The proposed plasmonic waveguide is covered with the Ag thin film to generate the plasmonic wave on metallic interface. The optical characteristics of plasmonic waveguide were calculated using the three-dimensional finite-difference time-domain method. The plasmonic waveguide was fabricated with the lengths of 2 to $10{\mu}m$ and the widths of 400 to 700 nm, respectively. The plasmonic mode and optical loss were measured. The optimum plasmonic length is $10{\mu}m$ and widths are 600 and 700 nm in the fabricated waveguide. This plasmonic waveguide can be directly integrated with other conventional optical devices and can be essential building blocks of PIC.

Trends in Chip Fabrication Infrastructure for Implementation in Quantum Technology (양자 기술 구현을 위한 칩 제작 인프라 기술 동향)

  • J.W. Kim;K.W. Moon;J.J. Ju
    • Electronics and Telecommunications Trends
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    • v.38 no.1
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    • pp.9-16
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    • 2023
  • In the rapidly growing field of quantum computing, it is evident that a robust supply chain is needed for commercialization or large-scale production of quantum chips. As a result, the success of many R&D projects worldwide relies on the development of quantum chip foundries. In this paper, a variety of quantum chip foundries, particularly the ones creating photonic integrated circuit (PIC) quantum chips, are reviewed and summarized to demonstrate current technological trends. Global projects aiming to establish new foundries, as well as information regarding their respective funding, are also included to identify the evolutionary direction of quantum computing infrastructure. Furthermore, the potential application of lithium niobate as a novel material platform for quantum chips is also discussed.

All-optical mach-zehnder interferometric wavelength converter monolithically integrated with loss-coupled DFB probe source (Loss-Coupled DEB LD집적 Mach-Zehnder 간섭계형 파장 변환기)

  • 김현수;김종회;심은덕;백용순;김강호;권오기;오광룡
    • Korean Journal of Optics and Photonics
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    • v.14 no.4
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    • pp.454-459
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    • 2003
  • We report the first demonstration of 10 Gb/s wavelength conversion in a Mach-Zehnder interferometric wavelength converter monolithically integrated with a loss-coupled DFB probe source. The integrated device is fabricated using a BRS (buried ridge stripe) structure with an undoped InP clad layer on the top of a passive waveguide to reduce high propagation loss. The device exhibited a static extinction ratio of 11 dB. Good performance at 10 Gb/s is obtained with an extinction ratio of 7 dB and a power penalty of 2.8 dB at a 10$^{-9}$ bit error rate.

Design of a High-efficiency Fiber-to-chip Coupler with Reflectors

  • Yoo, Keon;Lee, Jong-Ho
    • IEIE Transactions on Smart Processing and Computing
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    • v.5 no.2
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    • pp.123-128
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    • 2016
  • In this paper, an inversely tapered coupler with Bragg reflectors is reported for the first time. With appropriately positioned reflecting structures, our fiber-to-chip coupler can more efficiently transmit the light from fiber to a waveguide in a photonic integrated circuit (PIC). A numerical simulation evaluated the coupler's efficiency with the reflector. Optimized parameters that maximize the efficiency of the coupler are also investigated. Simulation results show that the reflector with appropriate parameters enhances efficiency by up to 7 dB. Likewise, Bragg metal reflectors implemented by the conventional metallization process can also improve efficiency. It is also shown that the proposed reflector enhances the coupling efficiency in a double-tip taper coupler.