Article
Nanoscience & Nanotechnology
Niels Quack, Alain Yuji Takabayashi, Hamed Sattari, Pierre Edinger, Gaehun Jo, Simon J. Bleiker, Carlos Errando-Herranz, Kristinn B. Gylfason, Frank Niklaus, Umar Khan, Peter Verheyen, Arun Kumar Mallik, Jun Su Lee, Moises Jezzini, Padraic Morrissey, Cleitus Antony, Peter O'Brien, Wim Bogaerts
Summary: Silicon photonics is a mature technology with various applications, such as optical communications, sensing, computing, and quantum information processing. It offers excellent performance, high yield, and high-volume capacity through standardized manufacturing technology. However, the weak electro-optic effects of silicon limit the integration scale. By incorporating MEMS technology, the limitations can be overcome, allowing for compact, low-loss, broadband, fast, and low-power devices. This integration enables the scaling of photonic integrated circuits for telecommunications, neuromorphic computing, sensing, programmable photonics, and quantum computing.
MICROSYSTEMS & NANOENGINEERING
(2023)
Article
Optics
Hao Chen, Jiatong Li, Zhenyuan Shang, Guoqing Wang, Ziming Zhang, Zexing Zhao, Mengyu Zhang, Jinde Yin, Jinzhang Wang, Kai Guo, Junbo Yang, Peiguang Yan
Summary: Due to the slowdown of Moore's law, integrated photonic devices have become an important route for the development of large-scale optical communications. Researchers have designed and fabricated an integrated nonlinear optical switch using the inverse-design method, which exhibits significant intensity-dependent transmission at 1.5 μm waveband and has potential applications.
LASER & PHOTONICS REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Sophia Komrakova, Pavel An, Vadim Kovalyuk, Alexander Golikov, Yury Gladush, Aram Mkrtchyan, Dmitry Chermoshentsev, Dmitry Krasnikov, Albert Nasibulin, Gregory Goltsman
Summary: The potential of aerosol-synthesized single-walled carbon nanotube (SWCNT) films for silicon nitride photonic circuits is investigated in this study as a basis for developing integrated optics devices. By measuring the optical response of SWCNT-covered waveguides, the main SWCNT film parameters, such as absorption, nonlinear refractive, and thermo-optic coefficients, are retrieved, and the enhancement of all-optical wavelength conversion and the photoresponse with a 1.2 GHz bandwidth are demonstrated.
Article
Engineering, Electrical & Electronic
Martino Bernard, Luca Gemma, Davide Brunelli, Giovanni Paternoster, Mher Ghulinyan
Summary: We report on the design, fabrication, and characterization of a Silicon Nitride (SiN)-based integrated photonic chip in which the dielectric waveguides are coupled to photodetectors integrated homogeneously into the Silicon substrate. The photonic-electronic coupling was realized by a 3D inverse tapering of SiN waveguides.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Ju Won Choi, Byoung-Uk Sohn, Ezgi Sahin, George F. R. Chen, Doris K. T. Ng, Benjamin J. Eggleton, Carel Martijn de Sterke, Dawn T. H. Tan
Summary: In this manuscript, a new approach for generating picosecond pulse trains from low power, continuous-wave light is introduced. This is achieved by utilizing cross-phase modulation technology in an ultra-silicon-rich nitride grating. The significance of this technique lies in its ability to generate high repetition rate ultrashort pulses from weak continuous-wave light.
Review
Optics
Yong Zhang, Yan Sheng, Shining Zhu, Min Xiao, Wieslaw Krolikowski
Summary: Nonlinear photonic crystals are microstructures with quadratic nonlinearity that are used for the generation and control of coherent light at new frequencies. The recent invention of 3D nonlinear photonic crystals using femtosecond laser pulses has made it experimentally feasible to study intense light interaction with these crystals. Future development will focus on achieving properties and functionalities that are difficult or impossible with lower dimensional structures.
Article
Physics, Multidisciplinary
Xinru Ji, Junqiu Liu, Jijun He, Rui Ning Wang, Zheru Qiu, Johann Riemensberger, Tobias J. Kippenberg
Summary: This study adapts and optimizes Euler bends to build compact racetrack microresonators based on ultralow-loss, multi-mode, silicon nitride photonic integrated circuits. The researchers quantitatively investigate the suppression of spatial mode interaction and demonstrate the preservation of low optical loss in the microresonators. The optimized Euler bends and racetrack microresonators have potential applications in integrated nonlinear photonic systems and photonic quantum computing.
COMMUNICATIONS PHYSICS
(2022)
Article
Optics
Alexander D. White, Geun Ho Ahn, Kasper Van Gasse, Ki Youl Yang, Lin Chang, John E. Bowers, Jelena Vuckovic
Summary: This article demonstrates an integrated approach for passively isolating a continuous-wave laser using the non-reciprocal Kerr nonlinearity in ring resonators. By using silicon nitride as the model platform, the authors achieve single ring isolation of 17-23 dB with 1.8-5.5 dB insertion loss, and cascaded ring isolation of 35 dB with 5 dB insertion loss. They also demonstrate hybrid integration and isolation with a semiconductor laser chip using these devices.
Review
Nanoscience & Nanotechnology
Xavier X. Chia, Dawn T. H. Tan
Summary: Silicon nitride (SiN) has become a popular choice for photonic-integrated circuits (PICs) due to its broadband transparency, compatibility with CMOS fabrication processes, and high optical bandgap. However, current fabrication methods result in trade-offs between low thermal budgets and low losses. Recent research has focused on using deuterated silicon nitride (SiNx:D) to achieve low-loss PICs through a low-temperature, CMOS-compatible process. These devices show promise for both linear and nonlinear applications and have the potential to enable highly efficient chips with co-packaged electronics and photonics devices.
Article
Chemistry, Multidisciplinary
Inaki Lopez Garcia, Mario Siciliani de Cumis, Davide Mazzotti, Iacopo Galli, Pablo Cancio Pastor, Paolo De Natale
Summary: Theoretical modeling and experimental characterization of silicon nitride multilayer waveguides from visible to mid-infrared spectral regions were conducted, showing excellent waveguiding behavior with low losses in the infrared range.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Physical
Xiong Deng, Shen Shen, Yanli Xu, Jiangtao Liu, Jun Li, Zhenhua Wu
Summary: This study investigates photonic-crystal-like devices and microcavities in graphene. The results show that these graphene-based devices can be significantly smaller in size compared to conventional photonic crystals, thanks to the shorter optical transport wavelength in graphene. By changing the applied voltage, the functionality of the devices can be altered, making them highly programmable and adjustable. Furthermore, these devices can be integrated with traditional microelectronic circuits, leading to potential applications in photonic integrated circuits and computing.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Xiong Deng, Shen Shen, Yanli Xu, Jiangtao Liu, Jun Li, Zhenhua Wu
Summary: This theoretical study investigates photonic-crystal-like devices and microcavities in graphene. The results show that graphene-based devices can be scaled down significantly compared to conventional photonic crystals due to the shorter optical transport wavelength in graphene. The devices have high programmability and can be integrated with traditional microelectronic circuits, offering potential applications in photonic integrated circuits and computing.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Lin Chang, Andreas Boes, Haowen Shu, Weiqiang Xie, Haijin Huang, Jun Qin, Bitao Shen, Xingjun Wang, Arnan Mitchell, John E. Bowers
Summary: Photonic integrated circuits have a wide range of applications, and the development of new second order nonlinear optical waveguide platforms opens up opportunities for low-power optical signal processing. Research on lithium niobate on insulator and aluminum gallium arsenide on insulator has demonstrated ultra-efficient conversion, paving the way for high-performance optical signal processing.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2021)
Article
Chemistry, Physical
Marcin Lelit, Mateusz Slowikowski, Maciej Filipiak, Marcin Juchniewicz, Bartlomiej Stonio, Bartosz Michalak, Krystian Pavlov, Marcin Mysliwiec, Piotr Wisniewski, Andrzej Kazmierczak, Krzysztof Anders, Stanislaw Stopinski, Romuald B. Beck, Ryszard Piramidowicz
Summary: The fabrication processes for silicon nitride photonic integrated circuits have common roots with microelectronics components technology, but passive photonic structures require fewer manufacturing steps and have larger critical dimensions. This work presents the design and development of fundamental building blocks for silicon nitride integrated photonic platform, covering the full design and manufacturing chain. Technological processes were developed and evaluated for the fabrication of waveguides, multimode interferometers, and arrayed waveguide gratings, confirming the technology's potential and the correctness of the proposed approach.
Article
Engineering, Electrical & Electronic
Yinghao Ye, Thijs Ullrick, Wim Bogaerts, Tom Dhaene, Domenico Spina
Summary: This paper presents a new equivalent circuit modeling and simulation approach for accurate and robust time-domain simulations of passive photonic integrated circuits (PICs) in standard SPICE simulators. By considering the different nature of optical and electronic signals, a novel concept of equivalent voltage and current for optical waveguides has been proposed, simplifying the optical to electronic ports conversion and supporting bidirectional signal propagation.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)