Article
Computer Science, Information Systems
Changhao Han, Zhaoyi Hu, Yuansheng Tao, Engang Fu, Yandong He, Fenghe Yang, Jun Qin, Xingjun Wang
Summary: This paper investigates the performance degradation effects on high-speed silicon Mach-Zehnder modulators under proton radiation for future space environment applications. The results demonstrate a significant reduction in modulation efficiency and eye diagram quality after proton radiation, with the degradation increasing with higher radiation fluence. The study also reveals the existence of different transmission states under different fluence levels.
SCIENCE CHINA-INFORMATION SCIENCES
(2022)
Article
Engineering, Electrical & Electronic
Youngkwan Jo, Christian Mai, Stefan Lischke, Lars Zimmermann, Woo-Young Choi
Summary: The modulation linearity of Si ring modulators (RMs) was investigated using numerical simulation and experimental verification based on coupled-mode theory. The numerical values of key parameters were experimentally extracted and the simulation and measurement results showed good agreement. The study characterized the influence of input optical wavelength and power on the Si RM linearity.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Fan Zhang, Lei Zhang, Xiaoke Ruan, Fan Yang, Hao Ming, Yanping Li
Summary: In this study, we focus on the high baud rate operation of silicon photonic modulators for short-reach and metro-haul applications. The current status of devices and digital signal processing is discussed, with a simulation-based study on the design of a carrier-depletion-based dual-drive traveling-wave Mach-Zehnder modulator. Transmission experiments of high baud rate signals using all-silicon modulators show promising results for future optical communication systems operating at 100 Gbaud.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Binhao Wang, Wayne V. Sorin, Michael R. T. Tan
Summary: High speed, damped, and low RIN VCSELs are crucial for optical interconnects with over 100 Gb/s using PAM4 modulation. Measurement techniques for intrinsic parameters aid in optimizing VCSEL designs. The proposed measurement method for VCSEL cavity round-trip loss and gain coefficient provides valuable insights into VCSEL DBRs and QW design, showing excellent match with the simple cavity model.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(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)
Article
Optics
Xinyu Su, Guolei Liu, Hongyan Yu, Dasai Ban, Niping Deng, Feng Qiu
Summary: This study presents an electro-optic polymer/silicon hybrid metasurface modulator with a high modulation bandwidth, utilizing a specially designed high-Q resonance structure for high-speed and low-energy applications in intelligent tunable metasurfaces and space optical communication.
Article
Optics
Ying Shi, Xu Liu, Lin Ma, Marika Immonen, Longxiu Zhu, Zuyuan He
Summary: This paper presents the development of optical printed circuit boards (OPCBs) with multimode polymer waveguides and pluggable optical connectors. The optical characteristics, waveguide connectors, and high-speed performance of the PCB-embedded waveguides were comprehensively evaluated. The fabricated OPCB consists of eight electrical layers and one optical layer, with waveguides terminated at both ends with MT/MPO connectors.
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
Materials Science, Multidisciplinary
GIlles F. Feutmba, Leandro Da Silva, Nishant Singh, Laurens Breyne, Kobe De Geest, John Puthenparampil George, Johan Bauwelinck, Dries Van Thourhout, Xin Yin, Jeroen Beeckman
Summary: The increasing demand for high data rates and low power consumption challenges the capabilities of silicon photonics. The integration of optical ferro-electric materials on the silicon on insulator (SOI) platform enhances its functionality. PZT thin films deposited on SOI substrates show promising relative permittivity and dielectric loss at high frequencies, enabling the possibility of achieving bandwidths beyond 60GHz in next generation data communication systems using Mach-Zehnder modulators.
OPTICAL MATERIALS EXPRESS
(2023)
Article
Optics
Xiaoxi Wang, Shayan Mookherjea
Summary: In this study, a high-speed silicon photonic microdisc modulator with over 10mW optical power in the bus waveguide is used, expanding the optical power handling regime of compact silicon resonant modulators at 1550nm. We experimentally investigate the wavelength tuning range and biasing path required to shift the resonant frequency to the optimal point corresponding to on chip power. We measure the optical modulation amplitude (OMA) along different biasing trajectories of the microdisc under active modulation and demonstrate an OMA of 4.1mW with 13.5mW optical power in the bus waveguide at 20 Gbitis non-return to zero (NRZ) data modulation.
Article
Multidisciplinary Sciences
Hitesh Agarwal, Bernat Terres, Lorenzo Orsini, Alberto Montanaro, Vito Sorianello, Marianna Pantouvaki, Kenji Watanabe, Takashi Taniguchi, Dries Van Thourhout, Marco Romagnoli, Frank H. L. Koppens
Summary: By showcasing the integration of 2D-3D dielectrics in a double-layer graphene EA modulator, this research has successfully overcome the trade-off between high speed and large modulation efficiency. The new material combination enables the modulator device to achieve higher performance, with a bandwidth of approximately 39 GHz and a three-fold increase in modulation efficiency compared to previously reported high-speed modulators.
NATURE COMMUNICATIONS
(2021)
Article
Optics
F. E. N. G. C. H. A. O. Ni, H. O. N. G. G. E. N. LI, H. A. I. G. A. N. G. Liu, Y. U. A. N. L. I. N. Zheng, X. I. A. N. F. E. N. G. Chen
Summary: Pulse shaping is crucial for various applications of ultrafast lasers. A high-speed programmable lithium niobate spatial light modulator with 128 individual modulation channels and a modulation speed of 1 MHz is demonstrated. The proposed high-speed pulse shaper scheme opens new avenues for future applications of ultrafast science.
Article
Engineering, Electrical & Electronic
Xingrui Huang, Yang Liu, Zezheng Li, Huan Guan, Qingquan Wei, Zhiguo Yu, Zhiyong Li
Summary: This paper introduces a novel transmission line architecture in thin-film lithium niobate platforms to enhance the velocity match between microwave and optical waves. The use of slotted electrodes optimizes the microwave index, improving modulation efficiency and impedance match. Simulation results show promising performance for TFLN Mach-Zehnder modulators with CMOS-compatible operating voltage and high modulation bandwidth.
IEEE PHOTONICS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Xiansong Fang, Fan Yang, Xinyu Chen, Yanping Li, Fan Zhang
Summary: In this article, ultrahigh-speed optical interconnects with probabilistic shaping pulse amplitude modulation (PS-PAM) signals are experimentally demonstrated using a thin film lithium niobate (TFLN) modulator fabricated by the authors. By employing linear pre-equalization and Volterra nonlinear equalizer (VNLE), a 120 Gbaud PS-PAM16 signal with a bit rate up to 408 Gb/s is generated, showing a receiver sensitivity gain of 2.2 dB compared to regular PAM8 signal at the same bit rate of 360 Gb/s. With the assistance of VNLE, a 384.5 Gb/s PS-PAM16 signal can be transmitted over 500 m standard single-mode fiber (SSMF) at the C band. The ultra-broadband TFLN enabled transmission offers a promising solution for future 400G per wavelength data-center interconnects.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Yosuke Hinakura, Daichi Akiyama, Hiroyuki Ito, Toshihiko Baba
Summary: This study introduces a silicon photonic crystal waveguide slow light Mach-Zehnder modulator, which enhances modulation efficiency and maintains a wide working spectrum. By matching the phase using meanderline electrodes, the cutoff frequency is significantly improved, demonstrating high-speed modulation capabilities.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2021)
