Article
Engineering, Electrical & Electronic
Laurens Bogaert, Joris Van Kerrebrouck, Laurens Breyne, Joris Lambrecht, Haolin Li, Kasper Van Gasse, Jochem Verbist, Michael Vanhoecke, Hannes Ramon, Srinivasan Ashwyn Srinivasan, Peter De Heyn, Joris Van Campenhout, Peter Ossieur, Piet Demeester, Xin Yin, Johan Bauwelinck, Guy Torfs, Gunther Roelkens
Summary: Silicon photonics is a key-enabling technology that leverages the infrastructure of the microelectronics CMOS industry to achieve high yield, low cost, and potential high volume manufacturing. SiGe electro-absorption modulators (EAM) are considered promising candidates for next-generation data center interconnects and radio-over-fiber applications in next-generation cellular networks.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Francesco Testa, Mark T. Wade, Mikael Lostedt, Fabio Cavaliere, Marco Romagnoli, Vladimir Stojanovic
Summary: The paper provides an overview of future advanced antenna systems for 5G and 6G wireless networks, focusing on increasing data rate, reducing latency and power consumption. This will be achieved through the utilization of millimeter wave frequency bands and massive multiple-input multiple-output antenna technology. Advanced antenna systems based on arrays of several hundreds of antenna elements are being developed to manage front haul throughput effectively.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Anthony Rizzo, Stuart Daudlin, Asher Novick, Aneek James, Vignesh Gopal, Vaishnavi Murthy, Qixiang Cheng, Bok Young Kim, Xingchen Ji, Yoshitomo Okawachi, Matthew van Niekerk, Venkatesh Deenadayalan, Gerald Leake, Michael Fanto, Stefan Preble, Michal Lipson, Alexander Gaeta, Keren Bergman
Summary: Silicon photonics has great potential in improving optical interconnects in data centers and high performance computers, enabling higher transmission rates and lower energy consumption. This study reviews recent progress in silicon photonic interconnects, with a focus on chip-scale Kerr frequency comb sources, and provides a comprehensive overview of scalable silicon photonic systems. Experimental results demonstrate the feasibility of volume manufacturing for this technology.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2023)
Review
Chemistry, Multidisciplinary
Zheng Wang, Yan Cai, Haitao Jiang, Ziao Tian, Zengfeng Di
Summary: This article provides a comprehensive review on graphene-based silicon photonic devices and their applications in optical interconnects. Silicon photonics has the ability to integrate multiple core functions of optical interconnects into small-scale chips, offering cost-effective and scalable manufacturing capabilities. Graphene has emerged as a promising solution for traditional silicon photonics due to its exceptional electrical and optical properties, enabling pure phase modulation and ultrafast photodetection.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Optics
Guanyu Chen, Yu Yu, Yang Shi, Nanxi Li, Wei Luo, Lin Cao, Aaron J. Danner, Ai-Qun Liu, Xinliang Zhang
Summary: This review introduces the basic metrics and key process technologies for high-speed photodetectors (PDs) on silicon photonics platform, and reviews and discusses various types of high-speed PDs. These detectors continue to set new speed records and open an era of ultrahigh-speed optical interconnect. This review provides readers with insights into recent advances and contributes to further development.
LASER & PHOTONICS REVIEWS
(2022)
Article
Nanoscience & Nanotechnology
Qi Zhong, Haoqi Zhao, Liang Feng, Kurt Busch, Sahin K. Ozdemir, Ramy El-Ganainy
Summary: Optical resonators are structures that use wave interference and feedback to control light. They can support standing- or traveling-wave modes depending on the feedback mechanism. This article introduces a new class of photonic resonators that support a hybrid optical mode, which can be implemented using chip-scale photonics and free-space optics.
Article
Engineering, Electrical & Electronic
Govind Sharan Yadav, Chun-Yen Chuang, Kai-Ming Feng, Jhih-Heng Yan, Jyehong Chen, Young-Kai Chen
Summary: This paper proposes a novel sparsity tuned elastic net-pruned Volterra equalization (SENVE) technique to reduce computation complexity and accelerate evaluation process. The experimental results demonstrate its high performance improvement.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Tianwai Bo, Hoon Kim, Zhongwei Tan, Yi Dong
Summary: Optical single-sideband (SSB) transmission technique bridges the gap between intensity-modulation/direct-detection (IM/DD) and digital coherent transmission technologies. It offers a cost-effective solution to overcome the transmission distance limitation imposed by fiber chromatic dispersion in IM/DD systems, albeit with increased complexity in transmitter (Tx) structure and receiver-side signal processing. This makes optical SSB systems a promising choice for cost- and latency-sensitive datacenter interconnects.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Engineering, Manufacturing
Yizhen Zhu, Tengteng Tang, Suyi Zhao, Dylan Joralmon, Zachary Poit, Bhushan Ahire, Sanjay Keshav, Aaditya Rajendra Raje, Joshua Blair, Zilong Zhang, Xiangjia Li
Summary: Functional optics has become a hot topic due to their wide usage in diverse fields, but the complexity and multi-material distribution of advanced optical devices have hindered their development. However, additive manufacturing has shown its potential to produce multi-material, multi-scale, and multi-functional optical devices.
ADDITIVE MANUFACTURING
(2022)
Article
Engineering, Manufacturing
Roger B. Tipton, Dianhao Hou, Zhimin Shi, Thomas M. Weller, Venkat R. Bhethanabotla
Summary: The study demonstrates the ability to print photonic interconnects directly on flexible substrates using additive manufacturing technology, leading to the production of flexible photonic devices. The results show that these devices have good propagation performance and fatigue resistance.
ADDITIVE MANUFACTURING
(2021)
Article
Engineering, Electrical & Electronic
Hsiang-Chih Kao, Ming-Wei Lin, Ming-Chang M. Lee
Summary: This paper presents an operation scheme to engineer the modulation band of a Si microring modulator using electrical and optical peaking. By incorporating inductor design, the driving signal can be magnified near the peaking frequency. The modulation band can be tailored with more degrees of freedom by exploiting both electrical and optical peaking effects. Through our Si microring modulator design, we achieved a wide and flat transmission band over 95 GHz for NRZ data transmission up to 120 Gbit/s without extra signal post-compensation.
IEEE PHOTONICS JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Saeed Fathololoumi, David Hui, Susheel Jadhav, Jian Chen, Kimchau Nguyen, M. N. Sakib, Z. Li, Hari Mahalingam, Siamak Amiralizadeh, Nelson N. Tang, Harinadh Potluri, Mohammad Montazeri, Harel Frish, Reece A. Defrees, Christopher Seibert, Alexander Krichevsky, Jonathan K. Doylend, John Heck, R. Venables, A. Dahal, A. Awujoola, A. Vardapetyan, Guneet Kaur, Min Cen, Vishnu Kulkarni, Syed S. Islam, R. L. Spreitzer, S. Garag, A. C. Alduino, R. K. Chiou, L. Kamyab, S. Gupta, B. Xie, R. S. Appleton, S. Hollingsworth, S. McCargar, Y. Akulova, K. M. Brown, R. Jones, Daniel Zhu, Thomas Liljeberg, Ling Liao
Summary: This article describes the performance of high bandwidth-density silicon photonic based integrated circuits, showcasing the first fully functional photonic engine module co-packaged with an Ethernet switch. A 1.6 Tbps SiPh transmitter IC was demonstrated, integrating on-die all components needed to support sixteen 106.25 Gbps PAM4 optical transmit channels. The photonic engine is designed to allow up to sixteen modules to be co-packaged around a high-bandwidth switch ASIC.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Toshiki Kishi, Munehiko Nagatani, Shigeru Kanazawa, Kota Shikama, Takuro Fujii, Hidetaka Nishi, Hiroshi Yamazaki, Norio Sato, Hideyuki Nosaka, Shinji Matsuo
Summary: This article introduces a 2-channel 4-level pulse amplitude modulation (PAM4) transmitter front-end with the highest power efficiency reported so far. Experiments show that each channel can transmit 53-Gbps PAM4 signals with a power efficiency of 0.57 mW/Gbps when operated simultaneously, and demonstrate that only 10 taps are needed for 2-km-long SSMF transmission with a BER below 2.3 x 10(-4).
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
David Weng U. Chan, Gai Zhou, Xiong Wu, Yeyu Tong, Junwei Zhang, Chao Lu, Alan Pak Tao Lau, Hon Ki Tsang
Summary: This paper discusses the potential of using mature CMOS production processes to manufacture high-yield, low-cost photonic integrated circuits, and the application of integrated GeSi electroabsorption modulators and GeSi waveguide photodiodes in high-speed transmission. With the help of optimized digital signal processing, high-speed transmission is achieved at different transmission distances.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Panagiotis Toumasis, Giannis Giannoulis, Giannis Poulopoulos, Konstantina Kanta, Dimitrios Apostolopoulos, Hercules Avramopoulos
Summary: A novel technique utilizing the filtering properties of a fully reconfigurable serially coupled microring resonator structure was presented for dispersion compensation. Simulation and experimental results demonstrated significant improvement in transmission system output power and reduced error vector magnitude (EVM) through tuning filter bandwidth and resonance peak.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Optics
Nathan Dostart, Hayk Gevorgyan, Deniz Onural, Milos A. Popovic
Summary: The study demonstrates a non-reciprocal element made up of a pair of microring modulators and a microring phase shifter in an active silicon photonic process, achieving an on-chip isolator. Isolation of up to 13 dB was achieved with an insertion loss of 18 dB. The design, along with increased modulation efficiency, could potentially make modulator-based isolators a standard 'black-box' component in integrated photonics CMOS foundry platform component libraries.
Editorial Material
Engineering, Electrical & Electronic
Roberto Sabella, David Plant, Hongwei Chen, Antonella Bogoni, Vladimir Stojanovic
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Optics
Hayk Gevorgyan, Anatol Khilo, Mark T. Wade, Vladimir M. Stojanovi, Milos A. Popovi
Summary: This paper introduces a co-optimized monolithic electronics-photonics platform that transforms the structure of MOS field-effect transistors into highly efficient MOS capacitor ring modulators. The modulator achieves the smallest ring cavity and the largest free spectral range in the O-band, setting a record for shift efficiency. The paper demonstrates the excellent performance of the modulator under RF drive and proves its strong nonthermal tuning mechanism.
PHOTONICS RESEARCH
(2022)
Article
Optics
Bohan Zhang, Mark Schiller, Kenaish Al Qubaisi, Deniz Onural, Anatol Khilo, Michael J. Naughton, Milos A. Popovic
Summary: Researcher proposed a new type of 1D polarization-insensitive grating coupler (PIGC) that is based on a zero-birefringence subwavelength corelet waveguide. The PIGC demonstrated low insertion losses and a wide polarization dependent loss bandwidth in the telecommunications O-band.
Article
Optics
Nathan Dostart, Bohan Zhang, Michael Brand, Kenaish Al Qubaisi, Deniz Onural, Daniel Feldkhun, Milos Popovi, Kelvin Wagner
Summary: Optical phased arrays (OPAs) for 2D beam-steering are limited by wavelength, which affects field of view and efficiency. We propose a Vernier transceiver scheme that uses different periodicities to eliminate ambiguity and increase efficiency. This scheme enables dynamic Vernier and ultra-fast scanning.
Article
Engineering, Electrical & Electronic
Urmita Sikder, Rawan Naous, Vladimir Stojanovic, Tsu-Jae King Liu
Summary: Researchers have successfully implemented reprogrammable non-volatile vertically-oriented nano-electro-mechanical (NEM) switches using multiple back-end-of-line (BEOL) interconnect layers of a standard 16-nm CMOS process technology, without additional lithography steps. They also demonstrated a compact decoder circuit composed of these reconfigurable interconnects. With the decreasing minimum metal pitch in each new manufacturing process, the hybrid CMOS+NEM technology has become increasingly attractive in ultra-low-power reconfigurable computing applications.
IEEE ELECTRON DEVICE LETTERS
(2023)
Article
Optics
Kenaish Al Qubaisi, Mark Schiller, Bohan Zhang, Deniz Onural, Michael J. Naughton, Milos A. Popovic
Summary: We present the design, fabrication, and experimental characterization of photonic crystal nanobeam cavities with the smallest footprint, largest intrinsic quality factor, and smallest mode volume to date in a monolithic CMOS platform. Two types of cavities with opposite spatial mode symmetries were designed. The nanobeam cavities can be used in reflectionless topologies due to their opposite mode symmetry and evanescent coupling, making them desirable for complex photonic integrated circuits (PICs). The devices were fabricated in a 45 nm monolithic electronics-photonics CMOS platform optimized for silicon photonics (GlobalFoundries 45CLO) and demonstrated quality factors exceeding 100,000, the highest reported among fully cladded PhC nanobeam cavities in any silicon-on-insulator (SOI) platform. The ability of the cavities to confine light into small mode volumes was experimentally confirmed using near-field scanning optical microscopy (NSOM). These cavities are an important step towards realizing ultra-low energy active devices for next-generation integrated optical links beyond current microring resonator-based links and other CMOS PICs.
Article
Engineering, Electrical & Electronic
Panagiotis Zarkos, Sidney Buchbinder, Christos Adamopoulos, Sarika Madhvapathy, Olivia Hsu, Jake Whinnery, Pavan Bhargava, Vladimir Stojanovic
Summary: This article presents a fully integrated 2-D array of electronic-photonic ultrasound sensors for low-power miniaturized ultrasound probes. The system utilizes micro-ring resonators as ultrasound sensors, enabling lower power consumption inside the human body. It also replaces bulky micro-coax cables with thinner optic fibers. The integration of photonic devices with CMOS circuitry allows for a self-contained endoscopic ultrasound receiver system.
IEEE JOURNAL OF SOLID-STATE CIRCUITS
(2023)
Proceedings Paper
Computer Science, Hardware & Architecture
D. Kramnik, I. Wang, J. M. Fargas Cabanillas, A. Ramesh, S. Buchbinder, P. Zarkos, C. Adamopoulos, P. Kumar, M. A. Popovic, V. Stojanovic
Summary: Integrated photonics offers scalability for practical photonic quantum information processing. By integrating circuits alongside photonics in a standard CMOS process, we demonstrate feedback control of four-wave mixing in a silicon microring, enabling in-situ operation in the photon-pair generation regime.
ESSCIRC 2022- IEEE 48TH EUROPEAN SOLID STATE CIRCUITS CONFERENCE (ESSCIRC)
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Kenaish Al Qubaisi, Dorde Gluhovic, Deniz Onural, Milos A. Popovic
Summary: This study proposes a scheme using microring resonators to achieve standing-wave resonator operation, eliminating reflections while maintaining a throughport response similar to a traveling-wave resonator. This could potentially enable interdigitated p-n junction microring modulators to achieve higher performance than other geometries.
2022 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXHIBITION (OFC)
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Panagiotis Zarkos, Sidney Buchbinder, Christos Adamopoulos, Olivia Hsu, Sarika Madhvapathy, Jake Whinnery, Pavan Bhargava, Vladimir Stojanovic
Summary: The paper presents the first optical ultrasound sensor with co-integrated read-out circuitry, based on MRR technology, showing high sensitivity and minimum detectable pressure, operating effectively at a specified frequency.
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Christos Adamopoulos, Sidney Buchbinder, Panagiotis Zarkos, Pavan Bhargava, Asmaysinh Gharia, Ali Niknejad, Vladimir Stojanovic
Summary: This study demonstrates the world's first fully integrated electronic-photonic label-free molecular sensor using micro-ring resonators integrated with on-chip electronics, with real-time kinetics testing conducted on 100nm lipid nanoparticles mimicking SARS-CoV-2 particles.
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Kenaish Al Qubaisi, Anatol Khilo, Hayk Gevorgyan, Milos A. Popovic
Summary: This article presents microring modulators in the new 45CLO photonics-optimized 45 nm electronic-photonic CMOS platform. Interdigitated disk and vertical-junction rib microring designs are demonstrated, achieving a 20 GHz bandwidth at a 25 Gbps data rate.
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Josep M. Fargas Cabanillas, Manuj Kumar Singh, Bohan Zhang, Milos A. Popovi
Summary: The novel compact, ultra-broadband PSR based on photonic magic-T and RAMS demonstrates excellent performance with low polarization crosstalk and significantly reduced length compared to conventional adiabatic PSRs.
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Josep M. Fargas Cabanillas, Bohan Zhang, Milos A. Popovic
Summary: The concept of rapid adiabaticity is utilized to create a mode evolution based two-spatial-mode mux-demux chain, which is four times shorter than traditional adiabatic devices, with excellent performance.
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2021)