Katti, Rohan Prince, Shanthi
Published in
Physica Scripta
A microwave photonic system with silicon add-drop microring resonator as the core photonic device is analyzed for microwave/millimeter wave frequency generation. The primary concept of the proposed study relies on varying the coupling coefficients of the silicon add-drop microring resonator. Unequal coupling coefficients between the ring cavity and...
Yi, Xiaolin Sun, Dongyue Zhao, Weike Li, Hanwen Zhang, Long Shi, Yaocheng Dai, Daoxin
Published in
Nanophotonics
Efficient coupling between optical fibers and on-chip photonic waveguides has long been a crucial issue for photonic chips used in various applications. Edge couplers (ECs) based on an inverse taper have seen widespread utilization due to their intrinsic broadband operation. However, it still remains a big challenge to realize polarization-insensit...
Hong, Seokjin Yoon, Jinhyeong Kim, Junhyeong Neseli, Berkay Kim, Jae-Yong Park, Hyo-Hoon Kurt, Hamza
Published in
Nanophotonics
Once light is coupled to a photonic chip, its efficient distribution in terms of power splitting throughout silicon photonic circuits is very crucial. We present two types of 1 × 4 power splitters with different splitting ratios of 1:1:1:1 and 2:1:1:2. Various taper configurations were compared and analyzed to find the suitable configuration for th...
Chen, Yifei Liu, Mingxin Niu, Hongsheng Guo, Chen Shi, Shangqing Cheng, Wei Wang, Jin Wang, Qichao Zhu, Wanghua Hu, Guohua
...
Published in
Journal of Optics
Doping optimization in the slab waveguide region of a silicon photonic (SiP) modulator has always been considered to balance the optical loss and electrical resistance–capacitance constant. We found that the AC PN junction capacitance could be significantly decreased by specific doping concentrations in the slab areas. Benefiting from this effect, ...
Li, Jingxi Sun, Jigeng Ye, Ziyang Fan, Zhihua Zhou, Shaolin
Published in
Journal of Physics D: Applied Physics
In this paper, we propose an N-bit optical digital-to-analog converter (DAC) by integrating N pairs of 2×2 phase change based on-chip photonic switches and 2×2 multimode interference (MMI) splitters. An on-chip photonic switch is constructed by integrating a wavelength-selectable racetrack micro-ring resonator with the phase change chalcogenide Ge2...
Fernández de Cabo, Raquel Sánchez-Sánchez, Alejandro Yang, Yijun Melati, Daniele Alonso-Ramos, Carlos Velasco, Aitor V. González-Andrade, David
Published in
Nanophotonics
Multimode silicon photonics, leveraging mode-division multiplexing technologies, offers significant potential to increase capacity of large-scale multiprocessing systems for on-chip optical interconnects. These technologies have implications not only for telecom and datacom applications, but also for cutting-edge fields such as quantum and nonlinea...
Yu, Laiwen Li, Yurui Xiang, Hengtai Li, Yuanrong Cao, Hengzhen Ji, Zhongyang Liu, Liu Xiao, Xi Yin, Jianbo Guo, Jingshu
...
Published in
Nanophotonics
Silicon photonics with the advantages of low power consumption and low fabrication cost is a crucial technology for facilitating high-capacity optical communications and interconnects. The graphene photodetectors (GPDs) featuring broadband operation, high speed, and low integration cost can be good additions to the SiGe photodetectors, supporting h...
Ozdemir, Cenk Ibrahim Koninck, Yannick De Patra, Saroj Kanta Baryshnikova, Marina Kunert, Bernardette Pantouvaki, Marianna Campenhout, Joris Van Van Thourhout, Dries
Published in
Journal of Physics D: Applied Physics
We report on a comprehensive temperature dependent dark current study of high-quality InGaAs/GaAs multi quantum well waveguide photodetectors monolithically integrated on silicon. They are integrated through metalorganic vapor-phase selective-area epitaxial growth in a 300 mm CMOS pilot line. Defects resulting from the metamorphic growth of III-V d...
Suwito, Galih R Haffouz, Sofiane Dalacu, Dan Poole, Philip J Quitoriano, Nathaniel J
Published in
Journal of Physics D: Applied Physics
We reported nucleation mechanisms of InP directly on Si (8% lattice mismatch) under confined structures, called micro-crucibles, at ultra-high vacuum (UHV) by chemical beam epitaxy. These micro-crucibles are used to induce lateral growth in the presence of a micro-scale Au catalyst. It is found that at this UHV condition, the kinetics is dictated p...
Liu, Siwei Fu, Xin Niu, Jiaqi Huo, Yujie Cheng, Chuang Yang, Lin
Published in
Nanophotonics
Silicon-based optical switches are integral to on-chip optical interconnects, and mode-division multiplexing (MDM) technology has enabled modes to function as carriers in routing, further boosting optical switches’ link capacity. However, traditional multimode optical switches, which typically use Mach–Zehnder interferometer (MZI) structures and mo...
