Article
Engineering, Electrical & Electronic
Humaira Zafar, Bruna Paredes, Inas Taha, Juan E. Villegas, Mahmoud Rasras, Mauro F. Pereira
Summary: This paper introduces a broadband and ultra-low crosstalk integrated silicon superlattice waveguide, enabling high-density waveguide integration. The superlattice waveguides are implemented as S-shaped adiabatic bends, which result in ultra-low crosstalks and extremely low insertion loss for the TE polarization. The measurement results show that the average insertion loss for all channels is <= 0.1 dB, and the average crosstalk values for the first and second nearest neighboring waveguides are <= -37.8 dB and <= -45.2 dB, respectively. Simulation results predict efficient broadband performance over a wavelength range of 500 nm, covering all O, E, S, C, L, and U bands. This approach is applicable to other waveguide geometries and integrated photonic platforms.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2023)
Article
Optics
Xiaoyuan Guo, Zi Wang, Yao Zhang, Yingjie Liu, Zimeng Zhang, Jiefeng Xu, Shumin Xiao, Qinghai Song, Ke Xu
Summary: An ultra-broadband multimode waveguide crossing based on subwavelength transmitarray (SWTA) is proposed, which exhibits high transmittance in the propagation direction and excellent confinement in its orthogonal direction. The crossing, designed and fabricated on silicon on insulator, has a compact footprint of only 5.05 μm x 5.05 μm and operates over a large bandwidth from 1.4 to 2.1 μm with an excess loss of less than 0.77 dB. This ultra-broadband and compact multimode crossing enables dense cross connection of waveguides with large data capacity via wavelength and mode division multiplexing.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
Weike Zhao, Xiaolin Yi, Yingying Peng, Long Zhang, Haitao Chen, Daoxin Dai
Summary: This study uses the anisotropy of one-/two-dimensional subwavelength grating structures to achieve high-performance silicon multimode waveguide crossings. The proposed crossing exhibits compact footprints, low excess losses, and low intermode crosstalk.
LASER & PHOTONICS REVIEWS
(2022)
Article
Optics
Xiaowan Shen, Chenlei Li, Weike Zhao, Huan Li, Yaocheng Shi, Daoxin Dai
Summary: This paper proposes and realizes a silicon arrayed-waveguide grating (AWG) with a channel spacing of 1.6 nm for dense wavelength-division (de)multiplexing systems. By widening the arrayed waveguides beyond the singlemode regime, random phase errors and propagation loss are minimized without additional fabrication requirements. Euler-bends are introduced to reduce the device footprint and prevent excitation of higher-order modes. An example of a compact 16 x 16 AWG (de)multiplexer with single-etched 220-nm-thick silicon photonic waveguides is achieved, exhibiting low excess loss and adjacent-channel crosstalk.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
Lu Sun, Ruining Zhang
Summary: This study introduces an ultrashort multimode waveguide taper based on all-dielectric metamaterial, achieving expanded spot sizes for four lowest-order TM modes with low intermodal crosstalk values below -15 dB in the wavelength range of 1.5 μm to 1.6 μm, offering potential applications in high-speed communications.
Article
Optics
Sean Nelan, Andrew Mercante, Cooper Hurley, Shouyuan Shi, Peng Yao, Benjamin Shopp, Dennis W. Prather
Summary: This study reports a hybrid silicon nitride and lithium niobate folded electro-optic Mach Zehnder modulator, which features small footprint, low voltage, and wide bandwidth. The modulator demonstrates promising performance.
Article
Optics
Peiji Zhou, Ting Li, Yucheng Lin, Lipeng Xia, Li Shen, Xiaochuan Xu, Tao Li, Yi Zou
Summary: By leveraging the artificial gauge field mechanism, a dense waveguide array with a half-wavelength pitch, low-crosstalk, and broadband capability has been demonstrated in silicon. This approach enables flexible routing and significant reduction in on-chip estate, leading to a high-density photonic integrated circuit.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
Lin Han, Xiaoke Ruan, Weijie Tang, Tao Chu
Summary: An ultralow-loss silicon planar waveguide crossing operating in the O-band was experimentally demonstrated based on the Gaussian beam synthesis method. The device exhibits an insertion loss of 0.008 dB, which is the lowest reported loss for planar silicon waveguide crossings in the O-band. The device also exhibits low crosstalk below -40 dB over a 40 nm wavelength range with a compact footprint of 18 x 18 μm(2) and can be fabricated in a complementary metal-oxide-semiconductor-compatible process.
Article
Physics, Multidisciplinary
Shiping Liu, Heming Hu, Xiaoyue Ma, Runyu Dong, Qing Fang, Hua Chen
Summary: A low-crosstalk compact arrayed waveguide grating integrated with a tunable micro-ring resonator is demonstrated on a silicon-on-insulator platform. The side-lobe of the silicon nanowire AWG, introduced by fabrication errors, can be effectively suppressed by the Ring Filter. The crosstalk level of the side-lobe can be reduced from -16.3 dB to -26.8 dB. In addition, the crosstalk of the integrated AWG has improved over the entire 3 dB bandwidth, with a maximum crosstalk improvement of 8.9 dB at the left and right wavelengths of the 3 dB bandwidth. The excess loss from the ring resonator can be ignorable in principle.
FRONTIERS IN PHYSICS
(2022)
Article
Multidisciplinary Sciences
Yanhong Xu, Jie Huang, Lina Yang, Hansi Ma, Huan Yuan, Tong Xie, Junbo Yang, Zhenrong Zhang
Summary: This paper describes the design of an optical interconnection system using the inverse design method on a silicon-on-insulator (SOI) platform, including a wavelength demultiplexer and a same direction waveguide crossing. The system achieved low insertion loss and crosstalk for different target wavelengths, and the final optical interconnect structure composed of two devices can serve as a fundamental component in optical interconnect networks.
SCIENTIFIC REPORTS
(2021)
Article
Optics
Wuxiucheng Wang, Lejie Lu, Lydia King, Yongchao Liu, Ming Gong, Shuangyang Li, Hui Wu
Summary: This study proposes a combined method involving subarray design and array control method to mitigate thermal crosstalk in optical phased arrays. A silicon photonic chip prototype is fabricated to demonstrate the effectiveness of the proposed method.
Article
Engineering, Electrical & Electronic
Ghada Dushaq, Juan Esteban Villegas, Bruna Paredes, Srinivasa Reddy Tamalampudi, Mahmoud S. Rasras
Summary: In this study, the strong anisotropy of multilayer 2D GeAs was utilized to validate the technical feasibility of on-chip light management. The optical transmission spectra indicated a remarkable discrepancy between the in-plane crystal optical axes. The effect of GeAs crystal orientation on the electro-optic transmission performance was also demonstrated.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Optics
Deming Hu, Yang Zhang, Yuan-Yuan Zhao, Xuan-Ming Duan
Summary: This study proposes a dual-band grating coupler on a Ge-on-SOI platform, covering the 4.95 μm and 8.5 μm bands, with the introduction of Bragg gratings for crosstalk suppression. The simulated coupling efficiencies for the two bands are respectively high, indicating the potential applications in defense and environmental monitoring.
Article
Optics
Ning Liu, Jianfa Zhang, Zhihong Zhu, Wei Xu, Ken Liu
Summary: This paper discusses methods for achieving high-efficiency coupling in integrated nanophotonic chips, analyzes factors affecting coupling efficiency, and proposes a scheme to improve coupling efficiency. The theoretical feasibility of the scheme was validated through experimentation, laying the foundation for the integration of photonic devices and optical fibers.
Article
Engineering, Electrical & Electronic
Changkun Feng, Danni Liu, Honghao Ma, Chen Qing, Hui Li, Lishuang Feng
Summary: The research successfully suppressed the polarization noise of the integrated optic gyro by designing and fabricating a single-polarization Si3N4 waveguide ring resonator, improving the long-term zero-bias stability and precision of the gyroscope.
IEEE SENSORS JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Andrei Tsarev, Rinat Taziev, Evan Heller, Maryvonne Chalony
PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS
(2017)
Article
Engineering, Electrical & Electronic
E. A. Kolosovskii, A. V. Tsarev
QUANTUM ELECTRONICS
(2017)
Article
Nanoscience & Nanotechnology
Andrei Tsarev
PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS
(2018)
Article
Chemistry, Analytical
Andrei Tsarev, Eugeny Kolosovsky, Francesco De Leonardis, Vittorio M. N. Passaro
Article
Engineering, Electrical & Electronic
Andrei Tsarev
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2014)
Article
Materials Science, Multidisciplinary
Andrei Tsarev, Francesco De Leonardis, Vittorio M. N. Passaro
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2019)
Article
Engineering, Electrical & Electronic
A. Tsarev, R. M. Taziev
QUANTUM ELECTRONICS
(2019)
Article
Engineering, Electrical & Electronic
A. Tsarev, R. M. Taziev
QUANTUM ELECTRONICS
(2019)
Article
Chemistry, Analytical
Andrei Tsarev, Vittorio M. N. Passaro
Article
Chemistry, Analytical
Andrei Tsarev
Summary: The concept of bimodal sensors, utilizing inter-mode interaction of guided optical waves in a two-mode optical waveguide, is proposed in this paper. By leveraging dispersion properties, it is shown that these sensors can achieve extremely high sensitivity, surpassing that of sensors in single-mode waveguide structures.
Article
Engineering, Electrical & Electronic
Alexander A. Shklyaev, Andrei V. Tsarev
Summary: By using the solid-state dewetting phenomenon, submicron- and micron-sized SiGe particle arrays were obtained on Si(100) substrates. These arrays exhibit resonance effects in broad infrared spectral ranges, and possess a broadband antireflection property due to wide particle size distributions and the influence of a high-index substrate. The natural formation of particle arrays through dewetting proved to be effective as antireflection coatings.
IEEE PHOTONICS JOURNAL
(2021)
Article
Physics, Multidisciplinary
A. V. Tsarev
OPTOELECTRONICS INSTRUMENTATION AND DATA PROCESSING
(2020)
Proceedings Paper
Computer Science, Theory & Methods
Dmitry Gulyaev, Dmitry Dmitriev, Alexander Toropov, Nataly Valisheva, Andrey Tsarev, Eugeny Kolosovsky, Leonid Feduchin, Alexander Gorchakov, Konstantin Zhuravlev
29TH INTERNATIONAL CRIMEAN CONFERENCE: MICROWAVE & TELECOMMUNICATION TECHNOLOGY (CRIMICO'2019)
(2019)
Proceedings Paper
Engineering, Electrical & Electronic
D. E. Utkin, A. A. Shklyev, A. V. Tsarev, A. V. Latyshev
4TH INTERNATIONAL SCHOOL AND CONFERENCE ON OPTOELECTRONICS, PHOTONICS, ENGINEERING AND NANOSTRUCTURES (SAINT PETERSBURG OPEN 2017)
(2017)
Proceedings Paper
Engineering, Electrical & Electronic
Andrei V. Tsarev, Eugeny A. Kolosovsky
2016 13TH INTERNATIONAL SCIENTIFIC-TECHNICAL CONFERENCE ON ACTUAL PROBLEMS OF ELECTRONIC INSTRUMENT ENGINEERING (APEIE), VOL 1
(2016)