Article
Optics
Ruogu Song, Jialiang Sun, Jinyu Wang, Xinyu Li, Yufei Liu, Wencheng Yue, Yan Cai, Shuxiao Wang, Mingbin Yu
Summary: We propose and experimentally demonstrate a novel compact folded Michelson interferometer (FMI) modulator with high modulation efficiency and small footprint. This modulator, by folding the phase shift arms and using shorter traveling wave electrode (TWE), reduces the propagation loss of the RF signal and exhibits excellent performance including low V p -L, low optical insertion loss, high extinction ratio, and wide bandwidth.
Article
Optics
Hengsong Yue, Kaizhong Chen, Tao Chu
Summary: This paper presents a high-linearity dual-drive scheme using a single silicon dual-drive Mach-Zehnder modulator. The nonlinearity of the transfer function of the Mach-Zehnder interferometer is cancelled out by adjusting the bias voltages and RF amplitudes of the two driving arms. The proposed scheme achieves a record-breaking spurious-free dynamic range of 123.4 dB Hz6/7 for third-order intermodulation distortion, compared to 102.6 dB·Hz2/3 obtained using a conventional single-drive scheme. This scheme simplifies the design of modulators and promotes high-performance microwave photonic links.
Article
Engineering, Electrical & Electronic
Shihao Sun, Mingbo He, Mengyue Xu, Shengqian Gao, Siyuan Yu, Xinlun Cai
Summary: The paper discusses the technologies for realizing hybrid LN/SiPh platform and analyzes the performance of LN/SiPh MZM, including low insertion loss, low drive voltage, and large bandwidth. Various functional devices derived from the Mach-Zehnder interferometer (MZI) configuration are also reviewed.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2021)
Article
Computer Science, Information Systems
Sohrab Mohammadi-Pouyan, Moein Afrouzmehr, Derek Abbott
Summary: Vanadium dioxide (VO2) is a promising optical phase change material for high performance devices on hybrid silicon platforms. However, achieving an efficient and compact optical modulator using VO2 in active Si-platforms is still a challenge due to the simultaneous variation of real and imaginary refractive index during phase transition. This paper proposes a modified MZI structure that overcomes the refractive index variation issue and achieves high performance and energy efficiency.
Article
Optics
Sidong Fu, Yu Yu, Xinliang Zhang
Summary: The article proposes an electrical crosstalk suppression scheme for optical segmented modulators by introducing a complementary doped region as an insulator, successfully reducing the electrical crosstalk in the modulator and achieving an improvement in crosstalk.
Article
Optics
Jiacheng Liu, Gangqiang Zhou, Jiangbing Du, Weihong Shen, Linjie Zhou, Zuyuan He
Summary: In this work, a silicon mode-loop Mach-Zehnder modulator (ML-MZM) with record-high modulation efficiency is proposed and experimentally demonstrated. The use of a mode-loop structure and an L-shaped PN junction enables efficient optical signaling without a high voltage driver, opening up possibilities for CMOS-compatible driverless modulation.
PHOTONICS RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Wei Jia, Rajesh Menon, Berardi Sensale-Rodriguez
Summary: In this research, inverse designed reconfigurable digital metamaterial structures based on phase change material Sb2Se3 were explored for efficient and compact integrated nanophotonics. An exemplary design of a 1 x 2 optical switch demonstrated the optimized structure with low insertion loss and high extinction ratio for both phase states.
OPTICAL MATERIALS EXPRESS
(2021)
Article
Optics
Ben Xu, Min Chen, Kai Yang, Yun Guo, D. N. Wang, Chun-Liu Zhao
Summary: An ultra-high sensitivity Fabry-Perot interferometer (FPI) strain sensor with a bulge air-bubble at its waist is proposed and demonstrated in this research. The sensor shows an ultra-high strain sensitivity of 101.7 pm/mu epsilon, which is the highest among direct wavelength interrogation-based strain sensors reported so far. Additionally, it also has a low temperature sensitivity of around 1 pm/degrees C, achieving an extremely low temperature cross sensitivity of less than 10 n epsilon/degrees C.
Article
Optics
Pan Ying, Heyun Tan, Junwei Zhang, Mingbo He, Mengyue Xu, Xiaoyue Liu, Renyou Ge, Yuntao Zhu, Chuan Liu, Xinlun Cai
Summary: A thin-film lithium-niobate-on-insulator platform has been demonstrated for optical interconnect and nonlinear optics applications, showing potential for energy-efficient large-capacity optical interconnects. The edge-coupling Mach-Zehnder modulator on this platform exhibits low fiber-chip coupling loss, high EO bandwidth, and efficient thermal-optic phase shifter, enabling single-lane 200 Gbit/s data transmission.
Article
Multidisciplinary Sciences
Romulo Aparecido de Paula Jr, Ivan Aldaya, Tiago Sutili, Rafael C. Figueiredo, Julian L. Pita, Yesica R. R. Bustamante
Summary: This research proposes a design methodology based on artificial neural networks and heuristic optimization to reduce the complexity of the optimization process for silicon Mach-Zehnder modulators (MZMs) and achieve higher performance configurations. By substituting the 3D electromagnetic simulation with a deep neural network model and using the differential evolution algorithm for optimization, the researchers found new optimized MZM configurations with different optimization parameters and explored the performance boundary of this type of MZMs.
SCIENTIFIC REPORTS
(2023)
Article
Multidisciplinary Sciences
Ehsan Ordouie, Tianwei Jiang, Tingyi Zhou, Farzaneh A. Juneghani, Mahdi Eshaghi, Milad G. Vazimali, Sasan Fathpour, Bahram Jalali
Summary: This paper introduces an electrooptic modulator that can solve the problems of fiber dispersion and intensity noise. The modulator achieves phase diversity and differential operations in thin-film lithium niobate, and demonstrates its applications in time-stretch data acquisition and optical communication.
NATURE COMMUNICATIONS
(2023)
Article
Optics
Junichi Fujikata, Shigeki Takahashi, Masataka Noguchi, Takahiro Nakamura
Summary: In this study, a high-speed and high-efficiency narrow-width metal-oxide-semiconductor (MOS) capacitor-type Si optical modulator was developed using TM optical mode excitation. An optical-mode-converter structure from TE to TM mode was designed and fabricated successfully. The Si MOS-MOD showed high-modulation efficiency in TM mode and decreased electrical capacitance as the MOS junction width decreased. High-speed operation at 32 Gbps and 40 Gbps was achieved for the 30-μm-long Si MOS-MOD in TM mode.
Article
Physics, Multidisciplinary
Heming Hu, Shiping Liu, Xiaoyue Ma, Runyu Dong, Hua Chen, Qing Fang
Summary: This paper presents a large wavelength bandwidth Mach-Zehnder modulator based on light intensity equalization structure. The modulator utilizes a symmetric design and auxiliary MZIs to increase the optical operating bandwidth, extinction ratio, and dynamic extinction ratio. The results demonstrate the effectiveness of this structural design in improving the performance of Mach-Zehnder modulators.
FRONTIERS IN PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Ahmed B. Ayoub, Mohamed A. Swillam
Summary: This study presents a detailed investigation into a non-conventional silicon-based optical modulator on a chip. The proposed platform utilizes an ultra-thin silicon on insulator waveguide design, which offers low field confinement and high sensitivity to the cladding index. By incorporating this waveguide into a Mach-Zehnder interferometer configuration and employing an organic polymer as the active material for the electro-optic effect, an efficient optical modulator is achieved. The platform demonstrates promising performance for modulation applications and is cost-effective and easy to fabricate.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Optics
Weihong Shen, Gangqiang Zhou, Jiangbing Du, Linjie Zhou, Ke Xu, Zuyuan He
Summary: This study demonstrates a silicon integrated microring modulator (MRM) with record high-speed performances at the 2 μm waveband, providing prospects for silicon photonic integration and high-speed interconnection at this wavelength. The analysis of optical bistability in the 2 μm MRM is also presented, guiding the design and experimental investigation of similar devices.
PHOTONICS RESEARCH
(2022)
